Groups Übergangsmetall-substituierte VB-Elementsysteme, 12 [1] Ein- und zweikernige Übergangsmetallkomplexe mit Dihalogenarseneinheiten / Transition Metal Substituted VB Element Systems, 12 [1] Mono-and Dinuclear Transition Metal Complexes with Dihalogenarsenic

Abstract

The reaction of ASCl3 with the transition metal anions [η5-C5H5(CO)3M]⊖ (M = Cr, Mo, W) yields the arsenic transition metal complexes η5-C5H5(CO)3M-AsCl2, which readily form trans-η5-C5H5(CO)2LM-AsCl2 in the presence of phosphorus donors [L = P(OCH3)3, P(CH3)2C6H5]. Addition of M(CO)5-groups on the trivalent arsenic occurs with THF · M′(CO)5 (M′ = Cr, Mo) leading to the arsenic bridged dinuclear complexes η5-C5H5(CO)3Cr-AsCl2-M′(CO)5. Controlled Cl/F-exchange at the bridged species can be achieved by use of AgBF4.