Group 11 Metal Compounds with Tripodal Bis(imidazole) Thioether Ligands. Applications as Catalysts in the Oxidation of Alkenes and as Antimicrobial Agents
作者:Fangwei Liu、Reema Anis、Eunmi Hwang、Rafael Ovalle、Armando Varela-Ramírez、Renato J. Aguilera、María Contel
DOI:10.3390/molecules16086701
日期:——
The structure shows a AuIII center coordinated to the pincer ligand through one N and the S atom. The soft AuI center coordinates to the ligand through the same S atom that has lost the tert-butyl group, thus becoming a thiolate ligand. The short distance between the AuI-AuIII atoms (3.383 Å) may indicate a weak metal-metal interaction. Complexes 2-7 and the previously described CuI compound [CuBITOMe
Tripodal Bis(imidazole) Thioether Copper(I) Complexes: Mimics of the Cu<sub>M</sub> Site of Copper Hydroxylase Enzymes
作者:Lei Zhou、Douglas Powell、Kenneth M. Nicholas
DOI:10.1021/ic700447k
日期:2007.9.1
X-ray structure revealed the presence of bridging BIT-alkoxo ligands and terminal -SOMe groups. In contrast, oxygenation of 2b (R = Me) affords crystallographically defined [(BIT(OMe,SMe))2Cu2(mu-OH)2](OTf)2 (5), in which the copper centers are oxygenated without accompanying sulfur oxidation. Complex 5 in DMF is transformed into five-coordinate, mononuclear [CuII(BIT(OMe,SMe))(DMF)2](PF6)2 (6). The
三脚架双(咪唑)硫醚配体,(N-甲基-4,5-二苯基-2-咪唑基)2C(OR)C(CH3)2SR'(BIT(OR,SR'); R = H,CH3; R'制备了= CH 3,C(CH 3)3,C(C 6 H 5)3,提供了与羟化酶,多巴胺β羟化酶和肽基甘氨酸羟化单加氧酶的CuM结合位点相同的N 2 S供体原子组。在各自的三脚架配体1a(R = H)和1b(R = Me )和[Cu(CH3CN)4] PF6在CO(1个大气压)下的CH2Cl2中; 晶体学上已经确定了3a的金字塔结构。3a和3b(L = CO)的红外(IR)nu(CO)与Cu(M)-羰基化酶的红外(IR)nu(CO)相当,表明在铜中心具有相似的电子特性。[((BIT(OH,SMe))Cu(CH3CN)] PF6(2a)与双氧产生[(BIT(O,SOMe))2Cu2(DMF)2](PF6)2(4),其X射线结构表明存在桥接BIT-