A novel hexaosmium cluster [Os6(µ-H)(CO)19(µ-CO)(η2-C6F5NNNC6F5)] formed from an isomeric intermediate [Os6(µ-H)(CO)20(NCMe)2(η2-C6F5NNNC6F5)]via a capping process

Abstract

Novel hexaosmium cluster [Os₆(µ-H)(CO)₁₉(µ-CO)(η²-C₆F₅NNNC₆F₅)] is obtained in the reaction of C₆F₅NNNHC₆F₅ with [Os₃(CO)₁₀(NCMe)₂] and is fully characterized in the solid state by single-crystal X-ray diffraction analysis; investigation of its formation revealed the interesting capping of one end of a linear triosmium fragment onto the triangular face of [Os₃(CO)₁₀(NCMe)₂]via a ‘spiked’ isomeric intermediate [Os₆(µ-H)(CO)₂₀(NCMe)₂(η²-C₆F₅NNNC₆F₅)], of which the structure in solution was proposed based on ¹³C NMR studies.