Synthesis, characterization, and crystal structure determination of two mercury(II) dimer complexes with 4,7-diphenyl-1,10-phenanthroline, 5,5'-dimethyl-2,2'-bipyridine and bromide

چکیده مقاله

Mercury(II) complexes, {[Hg(Ph₂phen)(-Br)]₂Br ₂} CH₃CN (1) and {[Hg(dmbpy)(-Br)]₂Br ₂}(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)Å , b = 11.384(2)Å, c = 20.665(4)Å, and ß= 109.94(3)° and for 2 are: a = 8.7470(17)Å , b = 8.8328(18)Å, c = 9.4950(19)Å and α= 75.47(3)°, ß= 82.21(3)°, y= 85.56(3)°. 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. © 2010 Taylor & Francis.