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A Calixarene‐based {Co 9 } Coordination Triangle as an Efficient Heterogenous Catalyst
Author(s) -
Wang Shentang,
Bi Yanfeng,
Hang Xinxin,
Zhu Xiaofei,
Liao Wuping
Publication year - 2017
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201600409
Subject(s) - calixarene , catalysis , sbus , oxalic acid , cobalt , chemistry , lewis acids and bases , medicinal chemistry , inorganic chemistry , organic chemistry , metal organic framework , molecule , adsorption
Two triangular calixarene‐based coordination assemblies, namely [ M 9 (HTC4A) 3 (ox) 3 Cl 3 (H 2 O) 6 ] [ M = Co ( CIAC ‐ 214 ) and Ni ( CIAC ‐ 215 ); H 4 TC4A = p‐tert ‐butylthiacalix[4]arene; H 2 ox = oxalic acid], were synthesized by solvothermal reactions. In both structures, three shuttlecock‐like M 3 ‐TC4A secondary building units (SBUs) as the vertices are bridged by three ox linkers to form a triangular assembly. Remarkably, the activated cobalt compound with Lewis acid sites shows high heterogeneous catalysis in the degradation of methyleneblue (with conversion of nearly 70 % in 10 min of the 3rd run) and the reduction of 2, 4‐dinitrophenol (with conversion of 95.3 % in 60 min). The catalyst can be easily separated and recovered from the reaction system without significant loss of catalytic activity.