Abstract
Neutral inherently tri- and tetradentate ligands of the type Ph3-xAs(PyO)x (x = 2 (1), 3 (2)) have been synthesized and characterized. Reaction of 1 with [RuCl2(PPh3)3] affords complex [PhAs(μ-PyO)2RuCl2(PPh3)] (3), whereas 2 and [RuCl2(PPh3)3] react with formation of [As(μ-PyO)2RuCl(PPh3)2] (5) and [Ph3P(PyO)]Cl (6). Treatment of complex 5 with [AuCl(tht)] (tht = tetrahydrothiophene) results in liberation of tht and formation of [AuCl(As(PyO)2)RuCl(PPh3)2] (7), featuring an (Au-As-Ru) core. For compounds 3, 5, and 7 the As-Ru and As-Au bond situation has been investigated using NBO, AIM and ELF analysis, allowing the assignment of pronounced canonical forms of σ-(AsIII→RuII) to 3, σ-(AsII-RuI) to 5 and σ-(AuI←AsI→RuII) to 7.
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More From: Dalton transactions (Cambridge, England : 2003)
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