化学学报 ›› 1990, Vol. 48 ›› Issue (9): 873-878. 上一篇    下一篇

研究论文

化学键联铁-钴四核羰基簇结构的EXAFS研究

寇元;卢建军;殷元骐   

  1. 中国科学院兰州化学物理研究所
  • 发布日期:1990-09-15

EXAFS Study on chemical bonded cobalt-iron tetranuclear carbonyl cluster

KOU YUAN;LU JIANJUN;YIN YUANQI   

  • Published:1990-09-15

本文以EXAFS方法研究了化学键联的四核铁-钴羰基簇[Co3Fe(CO)12]-的表面结构。结果显示担载后Co-Co键长缩短0.04埃, Co-C和Co-Fe键长分别增长0.03和0.08埃, 说明FeCO3的四面体簇骼在担载后更大地偏离开理想的正四面体。

关键词: 钴化合物, 表面结构, 羰基络合物, 化学键, 铁化合物, 簇状化合物, 透射, 扩展X射线吸收谱法

The electronic structure of the [Co3Fe(CO)12]- cluster has been determine by EXAFS. The Co-Co bond decreased by 0.04 ? the Co-C and Co-Fe increased by 0.03 and 0.8 ?after the system has been supported. The framework of the cluster tends to deviate from idealized tetrahedron more than before due to the supporting effect.

Key words: COBALT COMPOUNDS, SURFACE STRUCTURE, CARBONYL COMPLEX, CHEMICAL BONDS, IRON COMPOUNDS, CLUSTER COMPOUND, TRANSMISSION

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