Abstract
Complexation of trinuclear silver(I) and copper(I) pyrazolates with chelated bisphosphines (1,1′-bis(diphenylphosphino)ferrocene (dppf) and bis[(2-diphenylphosphino)phenyl] ether (POP)) was investigated for the first time. The complexes of different structure were obtained depending on the reagent ratios. Deficiency of dppf ligand leads to the rearrangement of the trinuclear core to dinuclear, in which the metal atoms are bridged by bisphosphine. When bisphosphine is taken in a significant excess, the cyclic core rearranges to the linear complex featuring chelating and bridging 1,1′-bis(phosphino)ferrocenes and κ1 coordinated pyrazolate anion. The electronic transitions observed in these complexes are qualitatively described by TD-DFT calculations.
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