Diazenide and hydrazide(2-) derivatives of the [Re(CO)3] core

Abstract

Reaction of [ReBr3(CO)3]2- with aryldiazonium salts gives the Re(III) diazenide complexes [ReBr 2(NNC6H4R-4)(CO)2]-. The attachment of a PhNHCS tethering group to pyridyl hydrazine generates a HYNIC related proligand which gives a stable chelated pyridyliumthiocarbazide(2-) derivative of the [Re(I)(CO)3]+ core.