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NiCl6 crystallizes in the orthorhombic Cmmm space group. The structure is zero-dimensional and consists of four hydrochloric acid molecules and two NiCl4 clusters. In each NiCl4 cluster, Ni is bonded in a square co-planar geometry to four equivalent Cl atoms. All Ni–Cl bond lengths are 2.11 Å. Cl is bonded in a single-bond geometry to one Ni atom.
Ni6Cl7 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are seven inequivalent Ni+1.17+ sites. In the first Ni+1.17+ site, Ni+1.17+ is bonded to six Cl1- atoms to form a mixture of edge and corner-sharing NiCl6 octahedra. The corner-sharing octahedra tilt angles range from 1–10°. There are a spread of Ni–Cl bond distances ranging from 2.41–2.54 Å. In the second Ni+1.17+ site, Ni+1.17+ is bonded to six Cl1- atoms to form a mixture of edge and corner-sharing NiCl6 octahedra. The corner-sharing octahedra tilt angles range from 5–10°. There are a spread of Ni–Cl bond distances ranging from 2.36–2.74 Å. In the third Ni+1.17+ site, Ni+1.17+ is bonded to six Cl1- atoms to form a mixture of edge and corner-sharing NiCl6 octahedra. The corner-sharing octahedra tilt angles range from 2–11°. There are a spread of Ni–Cl bond distances ranging from 2.36–2.53 Å. In the fourth Ni+1.17+ site, Ni+1.17+ is bonded to six Cl1- atoms to form a mixture of edge and corner-sharing NiCl6 octahedra. The corner-sharing octahedra tilt angles range from 1–4°. There are a spread of Ni–Cl bond distances ranging from 2.45–2.51 Å. In the fifth Ni+1.17+ site, Ni+1.17+ is bonded to six Cl1- atoms to form a mixture of edge and corner-sharing NiCl6 octahedra. The corner-sharing octahedra tilt angles range from 2–5°. There are two shorter (2.33 Å) and four longer (2.53 Å) Ni–Cl bond lengths. In the sixth Ni+1.17+ site, Ni+1.17+ is bonded to six Cl1- atoms to form a mixture of edge and corner-sharing NiCl6 octahedra. The corner-sharing octahedra tilt angles range from 2–6°. There are a spread of Ni–Cl bond distances ranging from 2.39–2.52 Å. In the seventh Ni+1.17+ site, Ni+1.17+ is bonded to six Cl1- atoms to form a mixture of edge and corner-sharing NiCl6 octahedra. The corner-sharing octahedra tilt angles range from 2–11°. There are a spread of Ni–Cl bond distances ranging from 2.36–2.66 Å. There are seven inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded to five Ni+1.17+ atoms to form ClNi5 square pyramids that share a cornercorner with one ClNi6 octahedra, corners with eight ClNi5 square pyramids, an edgeedge with one ClNi6 octahedra, and edges with seven ClNi5 square pyramids. The corner-sharing octahedral tilt angles are 2°. In the second Cl1- site, Cl1- is bonded to five Ni+1.17+ atoms to form ClNi5 square pyramids that share corners with two equivalent ClNi6 octahedra, corners with seven ClNi5 square pyramids, edges with two equivalent ClNi6 octahedra, and edges with six ClNi5 square pyramids. The corner-sharing octahedra tilt angles range from 1–2°. In the third Cl1- site, Cl1- is bonded to five Ni+1.17+ atoms to form ClNi5 square pyramids that share corners with nine ClNi5 square pyramids, edges with three equivalent ClNi6 octahedra, and edges with five ClNi5 square pyramids. In the fourth Cl1- site, Cl1- is bonded to six Ni+1.17+ atoms to form ClNi6 octahedra that share corners with two equivalent ClNi6 octahedra, corners with four ClNi5 square pyramids, an edgeedge with one ClNi6 octahedra, and edges with eleven ClNi5 square pyramids. The corner-sharing octahedral tilt angles are 0°. In the fifth Cl1- site, Cl1- is bonded to five Ni+1.17+ atoms to form ClNi5 square pyramids that share corners with nine ClNi5 square pyramids, edges with four equivalent ClNi6 octahedra, and edges with four ClNi5 square pyramids. In the sixth Cl1- site, Cl1- is bonded to five Ni+1.17+ atoms to form ClNi5 square pyramids that share a cornercorner with one ClNi6 octahedra, corners with eight ClNi5 square pyramids, and edges with eight ClNi5 square pyramids. The corner-sharing octahedral tilt angles are 1°. In the seventh Cl1- site, Cl1- is bonded to five Ni+1.17+ atoms to form ClNi5 square pyramids that share corners with nine ClNi5 square pyramids, an edgeedge with one ClNi6 octahedra, and edges with seven ClNi5 square pyramids.
Ni15Cl16 crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. there are six inequivalent Ni+1.07+ sites. In the first Ni+1.07+ site, Ni+1.07+ is bonded to six Cl1- atoms to form a mixture of edge and corner-sharing NiCl6 octahedra. The corner-sharing octahedra tilt angles range from 0–8°. There are a spread of Ni–Cl bond distances ranging from 2.43–2.53 Å. In the second Ni+1.07+ site, Ni+1.07+ is bonded to six Cl1- atoms to form a mixture of edge and corner-sharing NiCl6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are a spread of Ni–Cl bond distances ranging from 2.35–2.48 Å. In the third Ni+1.07+ site, Ni+1.07+ is bonded to six Cl1- atoms to form a mixture of edge and corner-sharing NiCl6 octahedra. The corner-sharing octahedra tilt angles range from 0–8°. There are a spread of Ni–Cl bond distances ranging from 2.43–2.52 Å. In the fourth Ni+1.07+ site, Ni+1.07+ is bonded to six Cl1- atoms to form a mixture of edge and corner-sharing NiCl6 octahedra. The corner-sharing octahedra tilt angles range from 0–8°. There are a spread of Ni–Cl bond distances ranging from 2.43–2.51 Å. In the fifth Ni+1.07+ site, Ni+1.07+ is bonded to six Cl1- atoms to form a mixture of edge and corner-sharing NiCl6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are two shorter (2.36 Å) and four longer (2.47 Å) Ni–Cl bond lengths. In the sixth Ni+1.07+ site, Ni+1.07+ is bonded to six Cl1- atoms to form a mixture of edge and corner-sharing NiCl6 octahedra. The corner-sharing octahedra tilt angles range from 0–8°. There are a spread of Ni–Cl bond distances ranging from 2.43–2.53 Å. There are seven inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded to five Ni+1.07+ atoms to form ClNi5 square pyramids that share corners with four equivalent ClNi6 octahedra, corners with five ClNi5 square pyramids, and edges with eight ClNi6 octahedra. The corner-sharing octahedral tilt angles are 5°. In the second Cl1- site, Cl1- is bonded to six Ni+1.07+ atoms to form ClNi6 octahedra that share corners with two equivalent ClNi6 octahedra, corners with four equivalent ClNi5 square pyramids, edges with eight ClNi6 octahedra, and edges with four equivalent ClNi5 square pyramids. The corner-sharing octahedral tilt angles are 0°. In the third Cl1- site, Cl1- is bonded to six Ni+1.07+ atoms to form ClNi6 octahedra that share corners with six ClNi6 octahedra, edges with six ClNi6 octahedra, and edges with six ClNi5 square pyramids. The corner-sharing octahedral tilt angles are 3°. In the fourth Cl1- site, Cl1- is bonded to six Ni+1.07+ atoms to form ClNi6 octahedra that share corners with two equivalent ClNi6 octahedra, corners with four equivalent ClNi5 square pyramids, edges with eight ClNi6 octahedra, and edges with four ClNi5 square pyramids. The corner-sharing octahedral tilt angles are 0°. In the fifth Cl1- site, Cl1- is bonded to six Ni+1.07+ atoms to form ClNi6 octahedra that share corners with six ClNi6 octahedra, edges with six ClNi6 octahedra, and edges with six ClNi5 square pyramids. The corner-sharing octahedral tilt angles are 3°. In the sixth Cl1- site, Cl1- is bonded to five Ni+1.07+ atoms to form ClNi5 square pyramids that share corners with four equivalent ClNi6 octahedra, corners with five ClNi5 square pyramids, and edges with eight ClNi6 octahedra. The corner-sharing octahedral tilt angles are 5°. In the seventh Cl1- site, Cl1- is bonded to six Ni+1.07+ atoms to form ClNi6 octahedra that share corners with six ClNi6 octahedra, edges with six ClNi6 octahedra, and edges with six ClNi5 square pyramids. The corner-sharing octahedral tilt angles are 3°.
Ni3Cl4 crystallizes in the monoclinic Cm space group. The structure is three-dimensional. there are five inequivalent Ni+1.33+ sites. In the first Ni+1.33+ site, Ni+1.33+ is bonded to six Cl1- atoms to form a mixture of corner and edge-sharing NiCl6 octahedra. The corner-sharing octahedra tilt angles range from 0–5°. There are a spread of Ni–Cl bond distances ranging from 2.44–2.49 Å. In the second Ni+1.33+ site, Ni+1.33+ is bonded to six Cl1- atoms to form a mixture of corner and edge-sharing NiCl6 octahedra. The corner-sharing octahedra tilt angles range from 0–5°. There are a spread of Ni–Cl bond distances ranging from 2.44–2.50 Å. In the third Ni+1.33+ site, Ni+1.33+ is bonded to six Cl1- atoms to form a mixture of corner and edge-sharing NiCl6 octahedra. The corner-sharing octahedra tilt angles range from 0–5°. There are a spread of Ni–Cl bond distances ranging from 2.44–2.50 Å. In the fourth Ni+1.33+ site, Ni+1.33+ is bonded to six Cl1- atoms to form a mixture of corner and edge-sharing NiCl6 octahedra. The corner-sharing octahedra tilt angles range from 0–5°. There are a spread of Ni–Cl bond distances ranging from 2.43–2.50 Å. In the fifth Ni+1.33+ site, Ni+1.33+ is bonded to six Cl1- atoms to form edge-sharing NiCl6 octahedra. There are a spread of Ni–Cl bond distances ranging from 2.41–2.44 Å. There are six inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a rectangular see-saw-like geometry to four Ni+1.33+ atoms. In the second Cl1- site, Cl1- is bonded in a rectangular see-saw-like geometry to four Ni+1.33+ atoms. In the third Cl1- site, Cl1- is bonded in a rectangular see-saw-like geometry to four Ni+1.33+ atoms. In the fourth Cl1- site, Cl1- is bonded in a rectangular see-saw-like geometry to four Ni+1.33+ atoms. In the fifth Cl1- site, Cl1- is bonded to five Ni+1.33+ atoms to form a mixture of corner and edge-sharing ClNi5 square pyramids. In the sixth Cl1- site, Cl1- is bonded to five Ni+1.33+ atoms to form a mixture of corner and edge-sharing ClNi5 square pyramids.
CsNiCl3 crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Cs1+ is bonded to twelve equivalent Cl1- atoms to form CsCl12 cuboctahedra that share corners with six equivalent CsCl12 cuboctahedra, corners with six equivalent NiCl6 octahedra, faces with eight equivalent CsCl12 cuboctahedra, and faces with six equivalent NiCl6 octahedra. The corner-sharing octahedral tilt angles are 14°. There are six shorter (3.66 Å) and six longer (3.79 Å) Cs–Cl bond lengths. Ni2+ is bonded to six equivalent Cl1- atoms to form NiCl6 octahedra that share corners with six equivalent CsCl12 cuboctahedra, faces with six equivalent CsCl12 cuboctahedra, and faces with two equivalent NiCl6 octahedra. All Ni–Cl bond lengths are 2.41 Å. Cl1- is bonded in a 6-coordinate geometry to four equivalent Cs1+ and two equivalent Ni2+ atoms.
RbNiCl3 crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Rb1+ is bonded to twelve equivalent Cl1- atoms to form RbCl12 cuboctahedra that share corners with six equivalent RbCl12 cuboctahedra, corners with six equivalent NiCl6 octahedra, faces with eight equivalent RbCl12 cuboctahedra, and faces with six equivalent NiCl6 octahedra. The corner-sharing octahedral tilt angles are 16°. There are six shorter (3.53 Å) and six longer (3.69 Å) Rb–Cl bond lengths. Ni2+ is bonded to six equivalent Cl1- atoms to form NiCl6 octahedra that share corners with six equivalent RbCl12 cuboctahedra, faces with six equivalent RbCl12 cuboctahedra, and faces with two equivalent NiCl6 octahedra. All Ni–Cl bond lengths are 2.41 Å. Cl1- is bonded in a 6-coordinate geometry to four equivalent Rb1+ and two equivalent Ni2+ atoms.
NaNiAl3Cl12 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Na1+ is bonded to six Cl1- atoms to form distorted NaCl6 pentagonal pyramids that share corners with four AlCl4 tetrahedra and an edgeedge with one AlCl4 tetrahedra. There are a spread of Na–Cl bond distances ranging from 2.81–3.13 Å. Ni2+ is bonded to six Cl1- atoms to form NiCl6 octahedra that share edges with three AlCl4 tetrahedra. There are a spread of Ni–Cl bond distances ranging from 2.42–2.45 Å. There are three inequivalent Al3+ sites. In the first Al3+ site, Al3+ is bonded to four Cl1- atoms to form AlCl4 tetrahedra that share corners with two equivalent NaCl6 pentagonal pyramids and an edgeedge with one NiCl6 octahedra. There are a spread of Al–Cl bond distances ranging from 2.13–2.19 Å. In the second Al3+ site, Al3+ is bonded to four Cl1- atoms to form AlCl4 tetrahedra that share an edgeedge with one NiCl6 octahedra and an edgeedge with one NaCl6 pentagonal pyramid. There are a spread of Al–Cl bond distances ranging from 2.13–2.19 Å. In the third Al3+ site, Al3+ is bonded to four Cl1- atoms to form AlCl4 tetrahedra that share corners with two equivalent NaCl6 pentagonal pyramids and an edgeedge with one NiCl6 octahedra. There are a spread of Al–Cl bond distances ranging from 2.13–2.19 Å. There are twelve inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a distorted bent 120 degrees geometry to one Na1+ and one Al3+ atom. In the second Cl1- site, Cl1- is bonded in a distorted bent 120 degrees geometry to one Na1+ and one Al3+ atom. In the third Cl1- site, Cl1- is bonded in an L-shaped geometry to one Ni2+ and one Al3+ atom. In the fourth Cl1- site, Cl1- is bonded in an L-shaped geometry to one Na1+ and one Al3+ atom. In the fifth Cl1- site, Cl1- is bonded in a distorted water-like geometry to one Na1+ and one Al3+ atom. In the sixth Cl1- site, Cl1- is bonded in an L-shaped geometry to one Ni2+ and one Al3+ atom. In the seventh Cl1- site, Cl1- is bonded in an L-shaped geometry to one Ni2+ and one Al3+ atom. In the eighth Cl1- site, Cl1- is bonded in an L-shaped geometry to one Ni2+ and one Al3+ atom. In the ninth Cl1- site, Cl1- is bonded in an L-shaped geometry to one Ni2+ and one Al3+ atom. In the tenth Cl1- site, Cl1- is bonded in a distorted bent 120 degrees geometry to one Na1+ and one Al3+ atom. In the eleventh Cl1- site, Cl1- is bonded in an L-shaped geometry to one Ni2+ and one Al3+ atom. In the twelfth Cl1- site, Cl1- is bonded in a distorted L-shaped geometry to one Na1+ and one Al3+ atom.
NiTlCl3 crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Ni2+ is bonded to six equivalent Cl1- atoms to form NiCl6 octahedra that share corners with six equivalent TlCl12 cuboctahedra, faces with six equivalent TlCl12 cuboctahedra, and faces with two equivalent NiCl6 octahedra. All Ni–Cl bond lengths are 2.40 Å. Tl1+ is bonded to twelve equivalent Cl1- atoms to form TlCl12 cuboctahedra that share corners with six equivalent TlCl12 cuboctahedra, corners with six equivalent NiCl6 octahedra, faces with eight equivalent TlCl12 cuboctahedra, and faces with six equivalent NiCl6 octahedra. The corner-sharing octahedral tilt angles are 16°. There are six shorter (3.49 Å) and six longer (3.65 Å) Tl–Cl bond lengths. Cl1- is bonded in a 2-coordinate geometry to two equivalent Ni2+ and four equivalent Tl1+ atoms.
BaNiCl3 crystallizes in the hexagonal P6_3mc space group. The structure is three-dimensional. Ba2+ is bonded to twelve equivalent Cl1- atoms to form BaCl12 cuboctahedra that share corners with six equivalent BaCl12 cuboctahedra, corners with six equivalent NiCl6 octahedra, faces with eight equivalent BaCl12 cuboctahedra, and faces with six equivalent NiCl6 octahedra. The corner-sharing octahedra tilt angles range from 21–22°. There are a spread of Ba–Cl bond distances ranging from 3.32–3.47 Å. Ni1+ is bonded to six equivalent Cl1- atoms to form NiCl6 octahedra that share corners with six equivalent BaCl12 cuboctahedra, faces with six equivalent BaCl12 cuboctahedra, and faces with two equivalent NiCl6 octahedra. All Ni–Cl bond lengths are 2.48 Å. Cl1- is bonded in a 6-coordinate geometry to four equivalent Ba2+ and two equivalent Ni1+ atoms.
NiGa2Cl8 crystallizes in the monoclinic C2/c space group. The structure is one-dimensional and consists of two NiGa2Cl8 ribbons oriented in the (0, 0, 1) direction. Ni2+ is bonded to six Cl1- atoms to form NiCl6 octahedra that share corners with two equivalent GaCl4 tetrahedra and edges with two equivalent GaCl4 tetrahedra. There are a spread of Ni–Cl bond distances ranging from 2.41–2.46 Å. Ga3+ is bonded to four Cl1- atoms to form GaCl4 tetrahedra that share a cornercorner with one NiCl6 octahedra and an edgeedge with one NiCl6 octahedra. The corner-sharing octahedral tilt angles are 55°. There are a spread of Ga–Cl bond distances ranging from 2.14–2.24 Å. There are four inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in an L-shaped geometry to one Ni2+ and one Ga3+ atom. In the second Cl1- site, Cl1- is bonded in a single-bond geometry to one Ga3+ atom. In the third Cl1- site, Cl1- is bonded in a bent 120 degrees geometry to one Ni2+ and one Ga3+ atom. In the fourth Cl1- site, Cl1- is bonded in an L-shaped geometry to one Ni2+ and one Ga3+ atom.
NiAl2Cl8 crystallizes in the monoclinic C2/c space group. The structure is one-dimensional and consists of two NiAl2Cl8 ribbons oriented in the (0, 0, 1) direction. Ni2+ is bonded to six Cl1- atoms to form NiCl6 octahedra that share corners with two equivalent AlCl4 tetrahedra and edges with two equivalent AlCl4 tetrahedra. There are four shorter (2.41 Å) and two longer (2.47 Å) Ni–Cl bond lengths. Al3+ is bonded to four Cl1- atoms to form AlCl4 tetrahedra that share a cornercorner with one NiCl6 octahedra and an edgeedge with one NiCl6 octahedra. The corner-sharing octahedral tilt angles are 55°. There are a spread of Al–Cl bond distances ranging from 2.11–2.20 Å. There are four inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a single-bond geometry to one Al3+ atom. In the second Cl1- site, Cl1- is bonded in a bent 120 degrees geometry to one Ni2+ and one Al3+ atom. In the third Cl1- site, Cl1- is bonded in an L-shaped geometry to one Ni2+ and one Al3+ atom. In the fourth Cl1- site, Cl1- is bonded in an L-shaped geometry to one Ni2+ and one Al3+ atom.
Ni5Cl6 crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. there are three inequivalent Ni+1.20+ sites. In the first Ni+1.20+ site, Ni+1.20+ is bonded to six Cl1- atoms to form a mixture of corner and edge-sharing NiCl6 octahedra. The corner-sharing octahedral tilt angles are 13°. All Ni–Cl bond lengths are 2.45 Å. In the second Ni+1.20+ site, Ni+1.20+ is bonded to six Cl1- atoms to form a mixture of corner and edge-sharing NiCl6 octahedra. The corner-sharing octahedra tilt angles range from 5–7°. There are a spread of Ni–Cl bond distances ranging from 2.34–2.81 Å. In the third Ni+1.20+ site, Ni+1.20+ is bonded to six Cl1- atoms to form a mixture of corner and edge-sharing NiCl6 octahedra. The corner-sharing octahedra tilt angles range from 5–13°. There are a spread of Ni–Cl bond distances ranging from 2.33–2.61 Å. There are two inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded to five Ni+1.20+ atoms to form a mixture of corner and edge-sharing ClNi5 square pyramids. In the second Cl1- site, Cl1- is bonded to five Ni+1.20+ atoms to form a mixture of corner and edge-sharing ClNi5 square pyramids.
KNiCl3 crystallizes in the hexagonal P6_3cm space group. The structure is three-dimensional. K1+ is bonded in a 9-coordinate geometry to nine Cl1- atoms. There are a spread of K–Cl bond distances ranging from 3.30–3.48 Å. There are two inequivalent Ni2+ sites. In the first Ni2+ site, Ni2+ is bonded to six equivalent Cl1- atoms to form face-sharing NiCl6 octahedra. There are three shorter (2.39 Å) and three longer (2.42 Å) Ni–Cl bond lengths. In the second Ni2+ site, Ni2+ is bonded to six equivalent Cl1- atoms to form face-sharing NiCl6 octahedra. There are three shorter (2.40 Å) and three longer (2.41 Å) Ni–Cl bond lengths. There are two inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a 5-coordinate geometry to three equivalent K1+ and two equivalent Ni2+ atoms. In the second Cl1- site, Cl1- is bonded in a 5-coordinate geometry to three equivalent K1+ and two equivalent Ni2+ atoms.
Li6NiCl8 crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Li1+ is bonded to six Cl1- atoms to form LiCl6 octahedra that share corners with six equivalent LiCl6 octahedra, edges with two equivalent NiCl6 octahedra, and edges with eight equivalent LiCl6 octahedra. The corner-sharing octahedra tilt angles range from 0–7°. All Li–Cl bond lengths are 2.57 Å. Ni2+ is bonded to six equivalent Cl1- atoms to form NiCl6 octahedra that share edges with twelve equivalent LiCl6 octahedra. All Ni–Cl bond lengths are 2.41 Å. There are two inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded to six equivalent Li1+ atoms to form ClLi6 octahedra that share corners with six equivalent ClLi6 octahedra and edges with twelve equivalent ClLi4Ni square pyramids. The corner-sharing octahedral tilt angles are 0°. In the second Cl1- site, Cl1- is bonded to four equivalent Li1+ and one Ni2+ atom to form ClLi4Ni square pyramids that share corners with nine equivalent ClLi4Ni square pyramids, edges with four equivalent ClLi6 octahedra, and edges with four equivalent ClLi4Ni square pyramids.
NiCl2 is trigonal omega-like structured and crystallizes in the trigonal R-3m space group. The structure is two-dimensional and consists of three NiCl2 sheets oriented in the (0, 0, 1) direction. Ni2+ is bonded to six equivalent Cl1- atoms to form edge-sharing NiCl6 octahedra. All Ni–Cl bond lengths are 2.37 Å. Cl1- is bonded in a distorted T-shaped geometry to three equivalent Ni2+ atoms.
NiCl is Halite, Rock Salt structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Ni1+ is bonded to six equivalent Cl1- atoms to form a mixture of edge and corner-sharing NiCl6 octahedra. The corner-sharing octahedral tilt angles are 0°. All Ni–Cl bond lengths are 2.48 Å. Cl1- is bonded to six equivalent Ni1+ atoms to form a mixture of edge and corner-sharing ClNi6 octahedra. The corner-sharing octahedral tilt angles are 0°.
(NiCl3)2N2 crystallizes in the hexagonal P6_3/mmc space group. The structure is one-dimensional and consists of two ammonia molecules and one NiCl3 ribbon oriented in the (0, 0, 1) direction. In the NiCl3 ribbon, Ni2+ is bonded to six equivalent Cl1- atoms to form face-sharing NiCl6 octahedra. All Ni–Cl bond lengths are 2.28 Å. Cl1- is bonded in a distorted L-shaped geometry to two equivalent Ni2+ atoms.
Ni(H2Cl)2 crystallizes in the tetragonal P4/mmm space group. The structure is three-dimensional. there are two inequivalent Ni2+ sites. In the first Ni2+ site, Ni2+ is bonded in a distorted hexagonal planar geometry to six H atoms. There are a spread of Ni–H bond distances ranging from 1.44–1.61 Å. In the second Ni2+ site, Ni2+ is bonded to six Cl1- atoms to form corner-sharing NiCl6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are two shorter (2.18 Å) and four longer (2.45 Å) Ni–Cl bond lengths. There are three inequivalent H sites. In the first H site, H is bonded in a distorted linear geometry to one Ni2+, one H, and four equivalent Cl1- atoms. The H–H bond length is 0.73 Å. All H–Cl bond lengths are 2.48 Å. In the second H site, H is bonded in a single-bond geometry to one Ni2+ atom. In the third H site, H is bonded in a distorted single-bond geometry to one Ni2+ and one Cl1- atom. The H–Cl bond length is 2.57 Å. There are three inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a rectangular see-saw-like geometry to four equivalent H atoms. In the second Cl1- site, Cl1- is bonded in a single-bond geometry to one Ni2+ atom. In the third Cl1- site, Cl1- is bonded to two equivalent Ni2+ and four equivalent H atoms to form distorted corner-sharing ClNi2H4 octahedra. The corner-sharing octahedra tilt angles range from 0–90°.