Mercury(II) mixed ligand complexes of phosphines or amines with 2-cya- noamino thiophenolate ligands formed via monodeprotonation and carbon-sulfur bond cleavage of 2-aminobenzothiazole. X-ray crystal structures of [Hg(SC6H4NCN)(PPh3)]2 and [Hg(SC6H4NCN) (Ph2PCH2PPh2)](2)


Al-Jibori S. A. , Al-Doori L. A. , Al-Janabi A. S. M. , Alheety M. A. , Wagner C., Karadag A.

POLYHEDRON, vol.206, 2021 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 206
  • Publication Date: 2021
  • Doi Number: 10.1016/j.poly.2021.115349
  • Title of Journal : POLYHEDRON
  • Keywords: 2-Cyanoaminothiophenolate, Mercury(II), Diphosphine, 2-Aminobenzothiazole, ELECTRONIC-STRUCTURES, IRON CENTERS, COORDINATION, REACTIVITY, HG(II)

Abstract

The addition of sodium hydroxide to a mixture of phenyl mercury acetate and 2-aminobenzothiazole in warm ethanol led to the high yield (84%) formation of [Ph-Hg(LH)]n (1), LH = the 2-cyanoaminothiaphenolate anion (SC6H4NHC---N)-, resulting from monodeprotonation of 2-aminobenzothiazole and facile carbon-sulfur bond breakage. Reaction of 1 with Ph3P or Ph3PS afforded [Hg(LH)2(Ph3P)2] (2) or [PhHg(mu-LH)(Ph3PS)]2 (3), respectively. Recrystallization of 2 from warm DMSO afforded [Hg(mu-L)(PPh3)]2 (4), L = the 2-cyanoaminothiophenolate di-anion (SC6H4NC---N)2-, which was characterized by an X-ray diffraction study. Treatment of 1 with the diphosphines Ph2P(CH2)nPPh2, 2,6-diaminopyridine (dapy), ethylenediamine (en) or 1,10-phenanthroline (phen) afforded [PhHg(LH){ Ph2P(CH2)nPPh2}], {n = 1 dppm (5), n = 2 dppe (6), n = 3 dppp (7), n = 4 dppb (8), (CH2)n = (Cp)2Fe dppf (9)}, [PhHg(LH)(dapy)2] (11), [PhHg(LH)(en)] (12) or [PhHg(LH)(phen)] (13). Recrystallization of 5 from CH2Cl2 afforded the binuclear complex [Hg(mu-L)(eta 1-dppm)]2.CH2Cl2 (10), which has been characterized by an X-ray diffraction study.