Abstract
Mercury(II) complexes, \Hg(Ph2phen)(-Br)2Br2\ center dot CH3CN (1)
and \Hg(dmbpy)(mu-Br)2Br2\(2) (where Ph2phen is
4,7-diphenyl-1,10-phenanthroline and dmbpy is
5,5'-dimethyl-2,2'-bipyridine), were synthesized from reaction of HgBr2
with Ph2phen and dmbpy in CH3CN and CH3OH. Both complexes were
thoroughly characterized by elemental analysis, infrared, 1H and 13C NMR
spectroscopy and single-crystal X-ray diffraction. Complexes 1 and 2
crystallize in the space group P21/n of the monoclinic and P1 of the
triclinic systems and contain four and one molecules per unit cell,
respectively. The unit cell dimensions for 1 are: a = 20.422(4)
angstrom, b = 11.384(2) angstrom, c = 20.665(4) angstrom, and =
109.94(3)degrees and for 2 are: a = 8.7470(17) angstrom, b = 8.8328(18)
angstrom, c = 9.4950(19) angstrom and = 75.47(3)degrees, =
82.21(3)degrees, = 85.56(3)degrees. According to X-ray structure
determination both complexes are five coordinate with three bromides and
one bidentate ligand; one bromide is set at a semi-bridging position.
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