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NpP3 crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Np7+ is bonded to twelve equivalent P+2.33- atoms to form a mixture of distorted corner and face-sharing NpP12 cuboctahedra. There are six shorter (2.71 Å) and six longer (2.97 Å) Np–P bond lengths. P+2.33- is bonded in a 6-coordinate geometry to four equivalent Np7+ and two equivalent P+2.33- atoms. Both P–P bond lengths are 2.40 Å.
NpN2 is Hydrophilite structured and crystallizes in the tetragonal P4_2/mnm space group. The structure is three-dimensional. Np6+ is bonded to six equivalent N3- atoms to form a mixture of corner and edge-sharing NpN6 octahedra. The corner-sharing octahedral tilt angles are 54°. There are four shorter (2.15 Å) and two longer (2.21 Å) Np–N bond lengths. N3- is bonded in a trigonal planar geometry to three equivalent Np6+ atoms.
KNpAgS3 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. K1+ is bonded in a 8-coordinate geometry to eight S2- atoms. There are a spread of K–S bond distances ranging from 3.24–3.58 Å. Np4+ is bonded to six S2- atoms to form NpS6 octahedra that share corners with two equivalent NpS6 octahedra, edges with two equivalent NpS6 octahedra, and edges with four equivalent AgS4 tetrahedra. The corner-sharing octahedral tilt angles are 37°. There are four shorter (2.73 Å) and two longer (2.75 Å) Np–S bond lengths. Ag1+ is bonded to four S2- atoms to form AgS4 tetrahedra that share corners with two equivalent AgS4 tetrahedra and edges with four equivalent NpS6 octahedra. There are two shorter (2.47 Å) and two longer (2.56 Å) Ag–S bond lengths. There are two inequivalent S2- sites. In the first S2- site, S2- is bonded in a 6-coordinate geometry to three equivalent K1+, two equivalent Np4+, and one Ag1+ atom. In the second S2- site, S2- is bonded to two equivalent K1+, two equivalent Np4+, and two equivalent Ag1+ atoms to form a mixture of distorted edge and corner-sharing SK2Np2Ag2 octahedra. The corner-sharing octahedral tilt angles are 0°.
RbNpCuS3 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Rb1+ is bonded in a 8-coordinate geometry to eight S2- atoms. There are a spread of Rb–S bond distances ranging from 3.38–3.66 Å. Np4+ is bonded to six S2- atoms to form NpS6 octahedra that share corners with two equivalent NpS6 octahedra, edges with two equivalent NpS6 octahedra, and edges with four equivalent CuS4 tetrahedra. The corner-sharing octahedral tilt angles are 35°. There are two shorter (2.69 Å) and four longer (2.71 Å) Np–S bond lengths. Cu1+ is bonded to four S2- atoms to form CuS4 tetrahedra that share corners with two equivalent CuS4 tetrahedra and edges with four equivalent NpS6 octahedra. There are two shorter (2.30 Å) and two longer (2.40 Å) Cu–S bond lengths. There are two inequivalent S2- sites. In the first S2- site, S2- is bonded in a 6-coordinate geometry to three equivalent Rb1+, two equivalent Np4+, and one Cu1+ atom. In the second S2- site, S2- is bonded in a 6-coordinate geometry to two equivalent Rb1+, two equivalent Np4+, and two equivalent Cu1+ atoms.
KNpCuS3 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. K1+ is bonded in a 8-coordinate geometry to eight S2- atoms. There are a spread of K–S bond distances ranging from 3.22–3.58 Å. Np4+ is bonded to six S2- atoms to form NpS6 octahedra that share corners with two equivalent NpS6 octahedra, edges with two equivalent NpS6 octahedra, and edges with four equivalent CuS4 tetrahedra. The corner-sharing octahedral tilt angles are 37°. There are two shorter (2.69 Å) and four longer (2.70 Å) Np–S bond lengths. Cu1+ is bonded to four S2- atoms to form CuS4 tetrahedra that share corners with two equivalent CuS4 tetrahedra and edges with four equivalent NpS6 octahedra. There are two shorter (2.30 Å) and two longer (2.39 Å) Cu–S bond lengths. There are two inequivalent S2- sites. In the first S2- site, S2- is bonded in a 6-coordinate geometry to three equivalent K1+, two equivalent Np4+, and one Cu1+ atom. In the second S2- site, S2- is bonded in a 6-coordinate geometry to two equivalent K1+, two equivalent Np4+, and two equivalent Cu1+ atoms.
Li4NpO5 is Caswellsilverite-like structured and crystallizes in the tetragonal I4/m space group. The structure is three-dimensional. Li1+ is bonded to six O2- atoms to form LiO6 octahedra that share a cornercorner with one NpO6 octahedra, corners with five equivalent LiO6 octahedra, edges with three equivalent NpO6 octahedra, and edges with nine equivalent LiO6 octahedra. The corner-sharing octahedra tilt angles range from 0–9°. There are a spread of Li–O bond distances ranging from 2.06–2.30 Å. Np6+ is bonded to six O2- atoms to form NpO6 octahedra that share corners with two equivalent NpO6 octahedra, corners with four equivalent LiO6 octahedra, and edges with twelve equivalent LiO6 octahedra. The corner-sharing octahedra tilt angles range from 0–2°. There are four shorter (2.01 Å) and two longer (2.22 Å) Np–O bond lengths. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded to four equivalent Li1+ and two equivalent Np6+ atoms to form OLi4Np2 octahedra that share corners with six OLi4Np2 octahedra and edges with twelve equivalent OLi5Np octahedra. The corner-sharing octahedra tilt angles range from 0–9°. In the second O2- site, O2- is bonded to five equivalent Li1+ and one Np6+ atom to form a mixture of edge and corner-sharing OLi5Np octahedra. The corner-sharing octahedra tilt angles range from 0–9°.
NpOsO3 is (Cubic) Perovskite structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Np3+ is bonded to twelve equivalent O2- atoms to form NpO12 cuboctahedra that share corners with twelve equivalent NpO12 cuboctahedra, faces with six equivalent NpO12 cuboctahedra, and faces with eight equivalent OsO6 octahedra. All Np–O bond lengths are 2.82 Å. Os3+ is bonded to six equivalent O2- atoms to form OsO6 octahedra that share corners with six equivalent OsO6 octahedra and faces with eight equivalent NpO12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°. All Os–O bond lengths are 1.99 Å. O2- is bonded in a distorted linear geometry to four equivalent Np3+ and two equivalent Os3+ atoms.
BeNpO3 is (Cubic) Perovskite structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Be2+ is bonded to six equivalent O2- atoms to form BeO6 octahedra that share corners with six equivalent BeO6 octahedra and faces with eight equivalent NpO12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°. All Be–O bond lengths are 1.78 Å. Np4+ is bonded to twelve equivalent O2- atoms to form NpO12 cuboctahedra that share corners with twelve equivalent NpO12 cuboctahedra, faces with six equivalent NpO12 cuboctahedra, and faces with eight equivalent BeO6 octahedra. All Np–O bond lengths are 2.52 Å. O2- is bonded in a distorted linear geometry to two equivalent Be2+ and four equivalent Np4+ atoms.
RbNpO3 is (Cubic) Perovskite structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Rb1+ is bonded to twelve equivalent O2- atoms to form RbO12 cuboctahedra that share corners with twelve equivalent RbO12 cuboctahedra, faces with six equivalent RbO12 cuboctahedra, and faces with eight equivalent NpO6 octahedra. All Rb–O bond lengths are 3.06 Å. Np5+ is bonded to six equivalent O2- atoms to form NpO6 octahedra that share corners with six equivalent NpO6 octahedra and faces with eight equivalent RbO12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°. All Np–O bond lengths are 2.17 Å. O2- is bonded in a distorted linear geometry to four equivalent Rb1+ and two equivalent Np5+ atoms.
NpAs3 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Np3+ is bonded to twelve As1- atoms to form a mixture of edge, face, and corner-sharing NpAs12 cuboctahedra. There are four shorter (2.86 Å) and eight longer (3.16 Å) Np–As bond lengths. There are two inequivalent As1- sites. In the first As1- site, As1- is bonded in a 8-coordinate geometry to four equivalent Np3+ and four equivalent As1- atoms. All As–As bond lengths are 2.86 Å. In the second As1- site, As1- is bonded in a square co-planar geometry to four equivalent Np3+ atoms.
NpBO3 is (Cubic) Perovskite structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Np3+ is bonded to twelve equivalent O2- atoms to form NpO12 cuboctahedra that share corners with twelve equivalent NpO12 cuboctahedra, faces with six equivalent NpO12 cuboctahedra, and faces with eight equivalent BO6 octahedra. All Np–O bond lengths are 2.53 Å. B3+ is bonded to six equivalent O2- atoms to form BO6 octahedra that share corners with six equivalent BO6 octahedra and faces with eight equivalent NpO12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°. All B–O bond lengths are 1.79 Å. O2- is bonded in a distorted linear geometry to four equivalent Np3+ and two equivalent B3+ atoms.
NpTiO3 is (Cubic) Perovskite structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Np3+ is bonded to twelve equivalent O2- atoms to form NpO12 cuboctahedra that share corners with twelve equivalent NpO12 cuboctahedra, faces with six equivalent NpO12 cuboctahedra, and faces with eight equivalent TiO6 octahedra. All Np–O bond lengths are 2.77 Å. Ti3+ is bonded to six equivalent O2- atoms to form TiO6 octahedra that share corners with six equivalent TiO6 octahedra and faces with eight equivalent NpO12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°. All Ti–O bond lengths are 1.96 Å. O2- is bonded in a distorted linear geometry to four equivalent Np3+ and two equivalent Ti3+ atoms.
NpTcO3 is (Cubic) Perovskite structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Np3+ is bonded to twelve equivalent O2- atoms to form NpO12 cuboctahedra that share corners with twelve equivalent NpO12 cuboctahedra, faces with six equivalent NpO12 cuboctahedra, and faces with eight equivalent TcO6 octahedra. All Np–O bond lengths are 2.81 Å. Tc3+ is bonded to six equivalent O2- atoms to form TcO6 octahedra that share corners with six equivalent TcO6 octahedra and faces with eight equivalent NpO12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°. All Tc–O bond lengths are 1.99 Å. O2- is bonded in a distorted linear geometry to four equivalent Np3+ and two equivalent Tc3+ atoms.
NpSb3 crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Np3+ is bonded to twelve equivalent Sb1- atoms to form a mixture of face and corner-sharing NpSb12 cuboctahedra. There are six shorter (3.23 Å) and six longer (3.43 Å) Np–Sb bond lengths. Sb1- is bonded in a 4-coordinate geometry to four equivalent Np3+ atoms.
NpSb3 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Np3+ is bonded to twelve Sb1- atoms to form NpSb12 cuboctahedra that share corners with four equivalent NpSb12 cuboctahedra, corners with sixteen equivalent SbNp4Sb4 cuboctahedra, edges with eight equivalent NpSb12 cuboctahedra, edges with eight equivalent SbNp4Sb4 cuboctahedra, and faces with four equivalent NpSb12 cuboctahedra. There are four shorter (3.15 Å) and eight longer (3.44 Å) Np–Sb bond lengths. There are two inequivalent Sb1- sites. In the first Sb1- site, Sb1- is bonded to four equivalent Np3+ and four equivalent Sb1- atoms to form distorted SbNp4Sb4 cuboctahedra that share corners with eight equivalent NpSb12 cuboctahedra, corners with sixteen equivalent SbNp4Sb4 cuboctahedra, edges with four equivalent NpSb12 cuboctahedra, edges with six equivalent SbNp4Sb4 cuboctahedra, and faces with four equivalent SbNp4Sb4 cuboctahedra. All Sb–Sb bond lengths are 3.15 Å. In the second Sb1- site, Sb1- is bonded in a square co-planar geometry to four equivalent Np3+ atoms.
NpN2 is Fluorite structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Np6+ is bonded in a body-centered cubic geometry to eight equivalent N3- atoms. All Np–N bond lengths are 2.26 Å. N3- is bonded to four equivalent Np6+ atoms to form a mixture of edge and corner-sharing NNp4 tetrahedra.
NpN is Tetraauricupride structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Np3+ is bonded in a body-centered cubic geometry to eight equivalent N3- atoms. All Np–N bond lengths are 2.59 Å. N3- is bonded in a body-centered cubic geometry to eight equivalent Np3+ atoms.
NpN is Zincblende, Sphalerite structured and crystallizes in the cubic F-43m space group. The structure is three-dimensional. Np3+ is bonded to four equivalent N3- atoms to form corner-sharing NpN4 tetrahedra. All Np–N bond lengths are 2.27 Å. N3- is bonded to four equivalent Np3+ atoms to form corner-sharing NNp4 tetrahedra.