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本文以EXAFS方法研究了化学键联的四核铁-钴羰基簇[Co_(?)Fe(CO)_(12)]~-的表面结构。结果显示担载后Co—Co键长缩短0.04(?),Co—C和Co—Fe键长分别增长0.03和0.08(?),说明FeCo_3的四面体簇骼在担载后更大地偏离开理想的正四面体。
In this paper, the surface structure of chemically bonded tetranuclear iron-cobalt carbonyl clusters [Co_ (Fe) Fe (CO) _ (12)] ~ was investigated by EXAFS method. The results show that the Co-Co bond length decreases 0.04 (?) After loading, and the Co-C and Co-Fe bond lengths increase by 0.03 and 0.08 (?), Respectively, indicating that the tetrahedral cluster of FeCo 3 deviates greatly from the ideal Of the regular tetrahedron.