Configurationally chiral dirhenium complexes with triple and quadruple Re–Re bonds: preparation and circular dichroism of [Re2Cl4(S,S-dppb)2] and [Re2Cl4(S,S-dppb)2]2+
Abstract
The first configurationally chiral dirhenium complexes have been prepared and spectroscopically characterised; the c.d. spectrum of the quadruply bonded [Re2Cl4(S,S-dppb)2]2+ implies that the complex has the ∧ absolute configuration with a twist of less than 45°.