近年来,关于过渡金属原子簇化合物的研究工作发展很快。这类化合物的通式是 M_pL_q,其中 M_p 是 p 个以 M—M 键相结合的金属原子所形成的原子簇,L 则是与原子簇 M_p 相结合的配位体,如羰基、卤素离子、CN~-、膦等。这类化合物有许多特点,金属原子簇具有介于单原子和金属微晶之间的一种过渡型结构。配位体和被金属表面吸附了的分子或离子相似。由 In recent years, research work on transition metal cluster compounds has developed rapidly. The general formula of such compounds is M_pL_q, where M_p is a cluster of p metal atoms combined with M-M bonds and L is a ligand bound to cluster M_p, such as carbonyl, halide, CN ~ -, phosphine and the like. There are many characteristics of these compounds, metal clusters have a transitional structure between the single atoms and metal crystallites. A ligand is similar to a molecule or ion that is adsorbed on a metal surface. by