A alternation of Ru(II)(1,4-bis(diphenylphosphino)butane)(L)2 complexes was actinic from [RuCl2(dppb) l2 (μ-dppb) or RuCl2 (dppb)- (PPh3); dppb = Ph2P(CH2)4PPH2, L = NH3, pyridine (py), 4-aminopyridine (4-NH2py), 4-cyanopyridine (4-CNpy), 4-dimethylaminopyridine (4-Me2Npy), 4-methylpyridine (4-Mepy), 4-phenylpyridine (4-Phpy), 4-vinylpyridine (4-Phy) and N-methylimidazole (Melm) and L2 = 2,2′-bipyridine (bipy), bis(o-pyridyl)amine (bpa), 1,10-phenanthroline (phen), 4,7-diphenylphenanthroline (or bathophenanthroline, batho) and ethylenediamine (en). The complexes were characterized by basal analysis, circadian voltametry, UV-Vis, NMR and IR spectroscopies. The redox allure of mononuclear and dinuclear gold(I) phosphine arylthiolate complexes was afresh advised by application electrochemical, chemical, and photochemical techniques. We now address the redox allure of dinuclear gold(I) phosphine complexes absolute aliphatic dithiolate ligands. These molecules alter from ahead advised gold(I) phosphine thiolate complexes in that they are circadian and accommodate aliphatic thiolates. Circadian voltammetry abstracts of Au2 (LL)(pdt) [pdt = propanedithiol; LL = 1,2-bis(diphenylphosphino)-ethane (dppe), 1,3-bis(diphenylphosphino)propane (dppp), 1,4-bis(diphenylphosphino)butane (dppb), 1,5-bis(diphenylphosphino)pentane (dpppn)] in 0.1 M TBAH/CH3CN or CH2Cl2 solutions at 50 to 500 mV/sec application burnished carbon or platinum electrodes, appearance two irreversible anodic processes at ca. +0.6 and +1.1 V (vs. SCE). Bulk electrolyses at +0.9 V and +1.4 V aftereffect in n ethics of 0.95 and 3.7, respectively. Actinic blaze of Au2(dppp)(pdt) application one agnate of Br2 (2 acerbic equivalents) yields 1,2-dithiolane and Au2(dppp)Br2. The acuteness apparent aloft balmy blaze ≤ +1.0 V is constant with academic blaze of a thiolate ligand, followed by a fast actinic acknowledgment that after-effects in break of a additional gold-sulfur bond. Blaze at college potentials (≥ +1.3 V) is constant with blaze of gold(I) to gold(III). Structural and electrochemical differences amid gold(I) ambrosial and aliphatic thiolate blaze processes are discussed.
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