首页> 外文期刊>Chemistry: A European journal >Self-assembly of tetrahedral and trigonal antiprismatic clusters [Fe_4(L~4)_4] and [Fe_6(L~5)_6] on the basis of trigonal tris-bidentate chelators
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Self-assembly of tetrahedral and trigonal antiprismatic clusters [Fe_4(L~4)_4] and [Fe_6(L~5)_6] on the basis of trigonal tris-bidentate chelators

机译:四面体和三角反棱镜簇[Fe_4(L〜4)_4]和[Fe_6(L〜5)_6]的自组装,基于三角三叉双螯合剂

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摘要

In a one-pot reaction, the tetranuclear iron chelate complex [Fe_4(L~4)_4] 6 was generated from benzene-1,3,5-tricarboxylic acid trichloride (4), bis-tert-butyl malonate (5a), methyllithium, and iron(II) dichloride under aerobic conditions. Alternatively, hexanuclear iron chelate complex [Fe_6(L~5)_6] 7 was formed starting from bis-para-tolyl malonate (5b) by employing identical reaction conditions to those applied for the synthesis of 6.The clusters 6 and 7 are present as racemic mixtures of homoconfigurational (#DELTA#,#DELTA#,#DELTA#,#DELTA#)/(#LAMBDA#,#LAMBDA#,#LAMBDA#,#LAMBDA#)-fac or (#DELTA#,#DELTA#,#DELTA#,#DELTA#,#DELTA#,#DELTA#,#DELTA#)/(#LAMBDA#,#LAMBDA#,#LAMBDA#,#LAMBDA#,#LAMBDA#,#LAMBDA#)-fac stereoisomers. The structures of 6 and 7 were unequivocall resolved by single-crystal X-ray analyses. The all-iron(III) character of 6 and 7 was determined by Mossbauser spectroscopy.
机译:在一锅法反应中,四环铁螯合物[Fe_4(L〜4)_4] 6由苯-1,3,5-三羧酸三氯化物(4),双叔丁基丙二酸酯(5a),甲基锂和好氧条件下的二氯化铁(II)。或者,通过采用与合成6所用的反应条件相同的反应条件,从双对甲苯基丙二酸酯(5b)形成六核铁螯合物[Fe_6(L〜5)_6] 7。作为均构型(#DELTA#,#DELTA#,#DELTA#,#DELTA#)/(#LAMBDA#,#LAMBDA#,#LAMBDA#,#LAMBDA#)-fac或(#DELTA#,#DELTA)的外消旋混合物#,#DELTA#,#DELTA#,#DELTA#,#DELTA#,#DELTA#)/(#LAMBDA#,#LAMBDA#,#LAMBDA#,#LAMBDA#,#LAMBDA#,#LAMBDA#)-fac立体异构体。 6和7的结构通过单晶X射线分析明确分辨。 6和7的全铁(III)特性通过Mossbauser光谱法测定。

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