Synthesis and Reactivity of an Early‐Transition‐Metal Alkynyl Cubane Mn₄C₄ Cluster

Abstract

While the coordination chemistry of monometallic complexes and the surface properties of extended metal particles are well understood, the control of metal nanocluster formation has remained challenging. The isolation of discrete metal clusters provides an especially rare snapshot at the nanoscale of cluster growth. The synthesis and full characterization of the first early-transition-metal alkynyl cubane and the first m 3 -alkynyl Mn 3 motif are reported. Scheme 1. Transition-metal clusters:S carcity of CO-free alkynyl metal clusters other than with coinage metals.Scheme 2. The m 3 -X-M motif in planar hydridomanganese and 3D alkynyl-manganese clusters (R = SiMe 3 ).Supportinginformation and the ORCID identification number for one of the authors of this article can be found under: https://doi.