摘要
Exploring metal-organic frameworks (MOFs) with specific structures is of great interest in both theoretical studies and practical applications. Herein, using a commercial achiral reagent (nitrilotriacetic acid [H3NTA]), a nanoporous MOF family, M(II)3(NTA)2 (M = Co, Fe, Mn; M-NTA), is discovered in the form of ultralong single -crystalline nanowires. It possesses an extraordinary structure with a very rare seven-coordination pattern (MO6N) for metal ions and an unprecedented chiral 3D transition metal-oxo framework constructed by edge-shared MO6N decahedra and MO6 octahedra. M-NTA shows excellent activity and selectivity in catalytic hydroboration of alkynes, and M -O in MO6 is the theoretical catalytic active site that is assisted by the possible structural steric effect between the activated MO6 and two adjacent MO6N polyhedra. These findings indicate that the M-NTA family not only enriches the structural diversity of MOF materials but that it also shows potential for catalytic organic conversion.
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单位重庆大学; 中国科学院; 中国科学院研究生院; 北京大学