| | Abstract
| The reactions of 4N-phenyl-2-[ 1 -(pyrrol-2-yl)methylidene]-hydrazine carbothioamide (4PLi) and 4 Ar-phenyl-2-[l-(pyrrol-2-yl)ethylidene]-hydrazine carbothioamide (4PL2) with Group 12 metal halides afford complexes of types [M(L)2Xi] [M = Zn, L = 4PLi or 4PL2, X = Cl, Br or I; M = Cd, L = 4PL, and X = Cl, or L = 4PL2 and X = Cl, Br or I] and [M(L)X2] [M = Cd, L = 4PLi, X = Br or I; M = Hg, L = 4PLi or 4PL2, X = Cl, Br or I]. The new compounds were characterized by elemental analysis, FAB mass spectrometry, IR spectroscopy, and, in the case of sufficiently soluble compounds, 'H, l3C and, when appropriate, ll3Cd or 199Hg NMR spectrometry. The structures of [Hg(4PLi-H)Br] and [Zn(4PL2)2Br2] • 2 EtOH were also studied by single-crystal X-ray diffractometry. In [Hg(4PL|-H)Br] crystallized from the mother liquor of its synthesis, 4PLi behaves as a monodeprotonated S,iV-bidentate ligand. Otherwise, with Hg(II), Zn(II) and Cd(II), 4PLi and 4PL2 both behave as neutral S-monodentate ligands. | |
