Preparation of Pt(II) and Pd(II) complexes coordinated with both a diimine ligand and a sulfur-rich dithiolate ligand and electrical conductivities of their oxidized species and X-ray crystal structure of Pd(N-butyl-pyridine-2-carbaldimine)(C3S5)
摘要:
Pt(L)(C8H4S8) [L = 2,2 ' -bipyridine (bpy) and N-butyl-pyridine-2-carbaldimine (Bu-pya): C8H4S82- = 2-{(4,5-ethylenedithio)-1,3-dithiol-2-ylidene}-1,3-dithiol-4,5-dithionate(2-)]. Pd(Bu-pya)(C8H4S8), and Pd(Bu-pya)(C3S8) [C10-C6S82- = 2-{bis(dodecylthio)-1,3-dithiol-2-ylidene}-1,3-dithiol-4,5-dithiolate(2-)]. Pd(Bu-pya)(C8H4S8), and Pd(Bu-pya)(C3S8) [C3S82- = 4,5-disulfanyl-1,3-dithiol-2-thionate(2-)] were prepared. They showed intense electronic absorption bands due to an intramolecular mixed ligand-to-ligand charge transfer transition which is sensitive to a solvent. They exhibit oxidation potentials of -0.18 and +0.35 V (versus Ag/Ag-) with oxidation of the dithiolate ligand. They were oxidized by iodine or TCNQ (7,7,8,8-tetracyano-p-quinodimethane) to afford [Pt(L)(C8H4S8)](I-3)(y)(x = 0.9-1.0). [Pt(L)(C8H4S8)](TCNQ)(x) (y = 0.6-0.8) (L = bpy), Bu-pya and C10-C6S8) and [Pd(Bu-pya)(C8H4S8)I-.(5.1) and [Pd(Bu-pya)(C8H4S8)](TCNQ)(0.4). The [Pt(L)(C8H4S8)]-oxidized complexes behave as electrical conductors with conductivities of 1.4 x 10(-5)-10(-3) S cm(-1) measured for compacted pellets at room temperature, while the [Pd(Bu-pya)(C8H4S8)]-oxidized species exhibit conductivities of (1.4-3.2) x 10(-3) S cm(-1). The X-ray crystal structure of Pd(Bu-pya)(C3S8) revealed a one-dimensional array of the molecules constructed with some sulfur-sulfur non-bonded contacts. (C) 2000 Elesevier Science B.V. All rights reserved.
Preparation of Pt(II) and Pd(II) complexes coordinated with both a diimine ligand and a sulfur-rich dithiolate ligand and electrical conductivities of their oxidized species and X-ray crystal structure of Pd(N-butyl-pyridine-2-carbaldimine)(C3S5)
摘要:
Pt(L)(C8H4S8) [L = 2,2 ' -bipyridine (bpy) and N-butyl-pyridine-2-carbaldimine (Bu-pya): C8H4S82- = 2-{(4,5-ethylenedithio)-1,3-dithiol-2-ylidene}-1,3-dithiol-4,5-dithionate(2-)]. Pd(Bu-pya)(C8H4S8), and Pd(Bu-pya)(C3S8) [C10-C6S82- = 2-{bis(dodecylthio)-1,3-dithiol-2-ylidene}-1,3-dithiol-4,5-dithiolate(2-)]. Pd(Bu-pya)(C8H4S8), and Pd(Bu-pya)(C3S8) [C3S82- = 4,5-disulfanyl-1,3-dithiol-2-thionate(2-)] were prepared. They showed intense electronic absorption bands due to an intramolecular mixed ligand-to-ligand charge transfer transition which is sensitive to a solvent. They exhibit oxidation potentials of -0.18 and +0.35 V (versus Ag/Ag-) with oxidation of the dithiolate ligand. They were oxidized by iodine or TCNQ (7,7,8,8-tetracyano-p-quinodimethane) to afford [Pt(L)(C8H4S8)](I-3)(y)(x = 0.9-1.0). [Pt(L)(C8H4S8)](TCNQ)(x) (y = 0.6-0.8) (L = bpy), Bu-pya and C10-C6S8) and [Pd(Bu-pya)(C8H4S8)I-.(5.1) and [Pd(Bu-pya)(C8H4S8)](TCNQ)(0.4). The [Pt(L)(C8H4S8)]-oxidized complexes behave as electrical conductors with conductivities of 1.4 x 10(-5)-10(-3) S cm(-1) measured for compacted pellets at room temperature, while the [Pd(Bu-pya)(C8H4S8)]-oxidized species exhibit conductivities of (1.4-3.2) x 10(-3) S cm(-1). The X-ray crystal structure of Pd(Bu-pya)(C3S8) revealed a one-dimensional array of the molecules constructed with some sulfur-sulfur non-bonded contacts. (C) 2000 Elesevier Science B.V. All rights reserved.