CRYSTAL AND MOLECULAR STRUCTURE OF MONOAQUO-BIS-(p-HYDROXYBENZOATO)LEAD (II) MONOHYDRATE

Article abstract of DOI:10.1007/BF00745201

An x-ray structural study of monoaquo-bis-(p-hydroxybenzoato)lead (II) monohydrate *H2O has been carried out (diffractometer, λMoK_α, 1915 reflections, heavy-atom method, anisotropic refinement, R = 0.098).The crystals are monoclinic, a = 18.735(9), b = 7.464(3), c = 11.650(4) Angstroem, β = 113.116(30) deg, V = 1498.31 Angstroem³, d_calc = 2.15 g/cm³, Z = 4, space group P2₁/c.The carboxyl group of one organic ligand forms a chelate ring with the Pb atom (Pb-O, 2.39(4), 2.52(5) Angstroem), and each O atom acts as a bridge between neighboring metal atoms related by 2₁ and 1 symmetry (Pb-O 2.83(5), 2.89(3) Angstroem).The carboxyl group of the second ligand acts as a bridge through one O atom joining two neighboring Pb atoms (Pb-O 2.50(2), 2.65(3) Angstroem).The other O atom of this group is not coordinated to a metal, but forms an H-bond with two water molecules (O...O 2.83(5), 2.82(5) Angstroem).The coordination of Pb is brought up to 8 by two water molecules (Pb-OH2 2.61(14), 2.70(3) Angstroem).The OH groups of the ligand are not coordinated to Pb, but take part in H-bonding.