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W(CO)6 is Cubic alpha N2-derived structured and crystallizes in the orthorhombic Pnma space group. The structure is zero-dimensional and consists of twenty-four formaldehyde molecules and four tungsten molecules.
W2CO is Tungsten Carbide-derived structured and crystallizes in the hexagonal P-6m2 space group. The structure is three-dimensional. W3+ is bonded to three equivalent C4- and three equivalent O2- atoms to form a mixture of distorted edge, face, and corner-sharing WC3O3 pentagonal pyramids. All W–C bond lengths are 2.19 Å. All W–O bond lengths are 2.39 Å. C4- is bonded to six equivalent W3+ atoms to form distorted edge-sharing CW6 pentagonal pyramids. O2- is bonded in a 6-coordinate geometry to six equivalent W3+ atoms.
W2CO is Tungsten Carbide-derived structured and crystallizes in the orthorhombic Pmm2 space group. The structure is three-dimensional. there are two inequivalent W3+ sites. In the first W3+ site, W3+ is bonded in a 6-coordinate geometry to four equivalent C4- and two equivalent O2- atoms. All W–C bond lengths are 2.27 Å. Both W–O bond lengths are 2.34 Å. In the second W3+ site, W3+ is bonded to two equivalent C4- and four equivalent O2- atoms to form a mixture of distorted corner, edge, and face-sharing WC2O4 pentagonal pyramids. Both W–C bond lengths are 2.23 Å. All W–O bond lengths are 2.33 Å. C4- is bonded to six W3+ atoms to form distorted CW6 pentagonal pyramids that share corners with four equivalent CW6 pentagonal pyramids, corners with eight equivalent OW6 pentagonal pyramids, edges with two equivalent CW6 pentagonal pyramids, edges with four equivalent OW6 pentagonal pyramids, and faces with two equivalent CW6 pentagonal pyramids. O2- is bonded to six W3+ atoms to form distorted OW6 pentagonal pyramids that share corners with four equivalent OW6 pentagonal pyramids, corners with eight equivalent CW6 pentagonal pyramids, edges with two equivalent OW6 pentagonal pyramids, edges with four equivalent CW6 pentagonal pyramids, and faces with two equivalent OW6 pentagonal pyramids.
W4C3O is Tungsten Carbide-derived structured and crystallizes in the hexagonal P-6m2 space group. The structure is three-dimensional. there are two inequivalent W+3.50+ sites. In the first W+3.50+ site, W+3.50+ is bonded to three equivalent C4- and three equivalent O2- atoms to form a mixture of distorted edge, face, and corner-sharing WC3O3 pentagonal pyramids. All W–C bond lengths are 2.19 Å. All W–O bond lengths are 2.38 Å. In the second W+3.50+ site, W+3.50+ is bonded to six C4- atoms to form distorted WC6 pentagonal pyramids that share corners with twelve WC3O3 pentagonal pyramids, edges with six equivalent WC6 pentagonal pyramids, and faces with two WC3O3 pentagonal pyramids. There are three shorter (2.23 Å) and three longer (2.25 Å) W–C bond lengths. There are two inequivalent C4- sites. In the first C4- site, C4- is bonded to six W+3.50+ atoms to form a mixture of distorted edge, face, and corner-sharing CW6 pentagonal pyramids. In the second C4- site, C4- is bonded to six equivalent W+3.50+ atoms to form a mixture of distorted edge, face, and corner-sharing CW6 pentagonal pyramids. O2- is bonded in a 6-coordinate geometry to six equivalent W+3.50+ atoms.
WCO2 crystallizes in the tetragonal P4/mmm space group. The structure is three-dimensional. W6+ is bonded to two equivalent C2- and four equivalent O2- atoms to form corner-sharing WC2O4 octahedra. The corner-sharing octahedral tilt angles are 0°. Both W–C bond lengths are 2.11 Å. All W–O bond lengths are 1.94 Å. C2- is bonded in a linear geometry to two equivalent W6+ atoms. O2- is bonded in a linear geometry to two equivalent W6+ atoms.