Properties of Pt(II) complexes containing both a pyridyl N–N chelate ligand having a long alkyl chain and a sulfur-rich dithiolate ligand and their molecular interactions in the solid state
摘要:
Reactions of PtCl2(N-alkyl-pyridine-2-carbaldimine) [alkyl = C10H21 and C16H33; C-10-PYa and C-16-pya] with Na2C3S5 [C3S52- = 4,5-disulfanyl-1,3-dithiole-2-thionate(2-)] or Na2C8H4S8 [C8H4S82- = 2-{(4,5-ethylenedithio)-1,3-dithiole-2-ylidene}-1,3-dithiole-4,5-dithiolate(2-)] in methanol or ethanol afforded Pt(C3S5)(C-10-pya), Pt(C3S5)(C-16-pya) and Pt(C8H4S8)(C-10-pya). Their electronic absorption spectra exhibited mixed metal/ligand-to-ligand charge transfer bands in the region of 570-780 nm in solution which are sensitive to a solvent. The C3S5 complexes show almost reversible redox waves around +0.62 V (versus SCE) and the C8H4S8 complex at +0.17 and +0.51 V (versus SCE). They were reacted with excess amounts of iodine to afford [Pt(C3S5)(C-10-pya and C-16-pya)] (I-3)(0.7), [Pt(C3S5)(C-10-pya)] (I-3)(1.1) and [Pt(C8H4S8)(C-10-pya)] (I-3)(1.5), which exhibited electrical conductivities of 1 x (10(-7) - 10(-3)) S cm(-1) measured for compacted pellets at room temperature. Molecular interactions of the complexes and their oxidized species in the solid state are discussed. (C) 1999 Elsevier Science S.A. All rights reserved.
Properties of Pt(II) complexes containing both a pyridyl N–N chelate ligand having a long alkyl chain and a sulfur-rich dithiolate ligand and their molecular interactions in the solid state
摘要:
Reactions of PtCl2(N-alkyl-pyridine-2-carbaldimine) [alkyl = C10H21 and C16H33; C-10-PYa and C-16-pya] with Na2C3S5 [C3S52- = 4,5-disulfanyl-1,3-dithiole-2-thionate(2-)] or Na2C8H4S8 [C8H4S82- = 2-{(4,5-ethylenedithio)-1,3-dithiole-2-ylidene}-1,3-dithiole-4,5-dithiolate(2-)] in methanol or ethanol afforded Pt(C3S5)(C-10-pya), Pt(C3S5)(C-16-pya) and Pt(C8H4S8)(C-10-pya). Their electronic absorption spectra exhibited mixed metal/ligand-to-ligand charge transfer bands in the region of 570-780 nm in solution which are sensitive to a solvent. The C3S5 complexes show almost reversible redox waves around +0.62 V (versus SCE) and the C8H4S8 complex at +0.17 and +0.51 V (versus SCE). They were reacted with excess amounts of iodine to afford [Pt(C3S5)(C-10-pya and C-16-pya)] (I-3)(0.7), [Pt(C3S5)(C-10-pya)] (I-3)(1.1) and [Pt(C8H4S8)(C-10-pya)] (I-3)(1.5), which exhibited electrical conductivities of 1 x (10(-7) - 10(-3)) S cm(-1) measured for compacted pellets at room temperature. Molecular interactions of the complexes and their oxidized species in the solid state are discussed. (C) 1999 Elsevier Science S.A. All rights reserved.