TY - JOUR
T1 - Structural studies of mercury(II) halide pyridine complexes [HgX2(py)2], X = Cl, Br, or I
AU - Canty, Allan J.
AU - Raston, Colin L.
AU - Skelton, Brian W.
AU - White, Allan H.
PY - 1982/1
Y1 - 1982/1
N2 - The structures of the three title compounds have been determined by single-crystal X-ray diffraction methods at 295(1) K. For [HgCl2(py)2],(1), a redetermination, the cell is Monoclinic, space groupP21/n, with a = 17.726(7), b = 8.572(3), c = 3.910(2) Å, β = 92.00(4)°, and Z = 2. The structure is a chloride-bridged polymeric lattice of HgCl4 square-planar entities [Hg-Cl 2.754(2) and 2.765(2) Å] with pyridine ligands filling the trans-octahedral sites about the mercury atom [Hg-N 2.266(6) Å]. For [HgBr2(py)2], (2), the cell is Orthorhombic, space group Pca21, with a = 18.023(5), b = 8.754(3), c = 8.592(3) Å, and Z = 4; the basic structural unit is the [HgBr2(py)2] molecule [Hg-Br 2.478(3) and 2.483(3) Å, Br-Hg-Br 141.2(1)°; Hg-N 2.38(2) and 2.39(2) Å, N-Hg-N 90.7(7)°, N-Hg-Br 102.5(5)-104.3(4)°]. For [HgI2(py)2], (3), the cell is also Orthorhombic, space group Pnma, with a = 14.545(7), b = 11.396(6), c = 8.510(5) Å, and Z = 4, the stuctural unit also being the [HgI2(py)2] molecule with similar geometry to that of (2); in particular, Hg-I 2.70(1) and 2.65(1) Å, I-Hg-I 141.7(4)°.
AB - The structures of the three title compounds have been determined by single-crystal X-ray diffraction methods at 295(1) K. For [HgCl2(py)2],(1), a redetermination, the cell is Monoclinic, space groupP21/n, with a = 17.726(7), b = 8.572(3), c = 3.910(2) Å, β = 92.00(4)°, and Z = 2. The structure is a chloride-bridged polymeric lattice of HgCl4 square-planar entities [Hg-Cl 2.754(2) and 2.765(2) Å] with pyridine ligands filling the trans-octahedral sites about the mercury atom [Hg-N 2.266(6) Å]. For [HgBr2(py)2], (2), the cell is Orthorhombic, space group Pca21, with a = 18.023(5), b = 8.754(3), c = 8.592(3) Å, and Z = 4; the basic structural unit is the [HgBr2(py)2] molecule [Hg-Br 2.478(3) and 2.483(3) Å, Br-Hg-Br 141.2(1)°; Hg-N 2.38(2) and 2.39(2) Å, N-Hg-N 90.7(7)°, N-Hg-Br 102.5(5)-104.3(4)°]. For [HgI2(py)2], (3), the cell is also Orthorhombic, space group Pnma, with a = 14.545(7), b = 11.396(6), c = 8.510(5) Å, and Z = 4, the stuctural unit also being the [HgI2(py)2] molecule with similar geometry to that of (2); in particular, Hg-I 2.70(1) and 2.65(1) Å, I-Hg-I 141.7(4)°.
UR - http://www.scopus.com/inward/record.url?scp=9244246957&partnerID=8YFLogxK
U2 - 10.1039/DT9820000015
DO - 10.1039/DT9820000015
M3 - Article
SN - 1472-7773
SP - 15
EP - 18
JO - Journal of the Chemical Society. Dalton Transactions
JF - Journal of the Chemical Society. Dalton Transactions
IS - 1
ER -