近日，英国牛津大学Simon Aldridge团队研究了主族金属羰基配合物：结构及其向卡宾稳定锡原子的异构化。该项研究成果发表在2025年9月11日出版的《科学》杂志上。

与过渡元素相比，在近环境条件下与一氧化碳（CO）配位的s-和p-金属化合物是电子元素。

研究组报道了一个可分离的，结晶的主基团金属羰基配合物及其异构化到一个碳稳定的金属原子。锡炔（Boryl）₂Sn[其中Boryl为B(NDippCH)₂]与CO可逆配位，在0℃以下形成可分离的加合物，并用x射线晶体学对其进行表征。该配合物在0℃以上的温度下重排生成锡乙烯基（Boryl）（OBoryl）C=Sn，即电子基态的三重态碳（Boryl）（OBoryl）C和单原子Sn(0)之间的配合物。

附：英文原文

Title: A main-group metal carbonyl complex: Structure and isomerization to a carbene-stabilized tin atom

Author: Maximilian Dietz, Andrey V. Protchenko, Agamemnon E. Crumpton, Surendar Karwasara, Matthew M. D. Roy, James Stewart-Moreno, Christiane Timmel, Simon Aldridge

Issue&Volume: 2025-09-11

Abstract: In contrast to transition elements, s- and p-block metal compounds that coordinate carbon monoxide (CO) under near-ambient conditions are elusive. Here, we report an isolable, crystalline main-group metal carbonyl complex and its isomerization to a carbene-stabilized metal atom. The stannylene (Boryl)2Sn [where Boryl is B(NDippCH)2] coordinates CO reversibly, affording an isolable adduct below 0°C, which was characterized by x-ray crystallography. This complex rearranges at temperatures above 0°C to generate the stannavinylidene, (Boryl)(OBoryl)C=Sn, that is, a complex between the triplet carbene (Boryl)(OBoryl)C and monatomic Sn(0) in its electronic ground state.

DOI: ady0247

Source: https://www.science.org/doi/10.1126/science.ady0247