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Abstract：
Trinuclear metallacyclic oxidovanadium(V) complexes, [{VO(L3+2R)}3] (1-3) with asymmetric multidentate linking ligands (H3L3+2R: R = H, Me, Br), were synthesized. The molecular structure of 1 is characterized as a tripod structure, with each V(V) ion coordinated by ONO-atoms from a tridentate Schiff base site and ON-atoms from a bidentate benzoxazole site of two respective H3L3+2H ligands. The intramolecular V⋯V distances range from 8.0683 to 8.1791 Å. Complex 4 is a mononuclear dioxidovanadium(V) complex, (Et3NH)[VO2(HL3+2H)]. Cyclic voltammograms of 1-3 in DMF revealed redox couples attributed to three single-electron transfer processes.
摘要：
三核金属环氧化钒(V)配合物，[{VO(L3+2R)}3](1-3)具有不对称多齿连接配体(H3L3+2R:R=H,我,Br),是合成的。1的分子结构特征为三脚架结构，每个V（V）离子由来自三齿席夫碱位点的ONO原子和来自两个H3L32H配体的双齿苯并恶唑位点的ON原子配位。分子内V·V距离范围为8.0683至8.1791。配合物4是单核氧化钒(V)配合物,(Et3NH)[VO2(HL3+2H)]。DMF中1-3的循环伏安图显示了归因于三个单电子转移过程的氧化还原对。
