Dimetallic thiolate-bridged complexes: synthesis and rich electrochemistry of dinickel(II) and dizinc(II) monothiolate complexes
作者:Sally Brooker、Paul D Croucher、Tony C Davidson、Paul D Smith
DOI:10.1016/s0277-5387(00)00506-4
日期:2000.9
DMF, gives the complex [Ni2L1(NCS)2(DMF)] (5). An acyclic complex, [Ni2L2(C3H3N2)](CF3SO3)2 (6), is formed by reaction of two equivalents of nickel(II) ions with 2,6-diformyl-4-methylthiophenolate, pyrazole and two equivalents of 2-(2-aminoethyl)pyridine. Single crystal X-ray diffraction studies of 4 and 5 revealed differing environments for the nickel(II) ions within the macrocycle: in the case of
详细描述了两臂胺前体2,6-二[ N-(3'-氨基丙基)氨基甲基] -4-甲基苯酚(1)的合成。锌(II)和镍(II)模板的1和2,6-二甲酰-4-甲基硫代苯酚酸酯的席夫碱缩合反应(通过S-(2,6-二甲酰-4-甲基苯基)二甲基硫代氨基甲酸酯的碱水解而获得(2))在IPA中,生成大环配合物Zn 2 L1(CH 3 CO 2)2(H 2 O)2(3)和[Ni 2 L1(MeCN)2 ](ClO 4)2(4), 分别。在DMF中,将2个当量的NaNCS加到4中,得到复合物[Ni 2 L1(NCS)2(DMF)](5)。通过使两个当量的镍(II)离子与2,6-二甲酰基-4-反应生成无环配合物[Ni 2 L2(C 3 H 3 N 2)](CF 3 SO 3)2(6)。甲基硫酚盐,吡唑和两个当量的2-(2-氨基乙基)吡啶。4和5的单晶X射线衍射研究表明,大环内镍(II)离子的环境不同:在4的情况下一
N<sub>2</sub>O reduction at a dissymmetric {Cu<sub>2</sub>S}-containing mixed-valent center
作者:Charlène Esmieu、Maylis Orio、Stéphane Torelli、Laurent Le Pape、Jacques Pécaut、Colette Lebrun、Stéphane Ménage
DOI:10.1039/c4sc01487a
日期:——
Through our bio-inspired approach toward replicating nitrousoxide reductase (N2Or) activity, treatment of the LMe(MAM)S–S ligand with [Cu(CH3CN)4](OTf) (OTf = trifluoromethanesulfonate ion) leads to the isolation of a new dissymmetric mixed-valent (MV) dicopper(II,I) [2·(H2O)(OTf)]+ containing a Cu2S} core with labile triflate and water molecules at the copper centers. Whilst [2·(H2O)(OTf)]+ is prone
Controlled synthesis and reversible oxidation of a thiolate-bridged macrocyclic dinickel(II) complex
作者:Sally Brooker、Paul D. Croucher、Fiona M. Roxburgh
DOI:10.1039/dt9960003031
日期:——
considerable potential in biosite modellingstudies. A macrocycle L and a related acyclic ligand L′ have been prepared, as complexes, from the precursor and 1,3-diaminopropane. The macrocycle was successfully templated by both zinc(II) and nickel(II) ions yielding [Zn2L(H2O)2][O3SCF3]2·H2O 1 and the diamagnetic complex [Ni2L][ClO4]22, respectively. A single-crystal X-ray analysis of 1 showed the zinc ions
Dithiolate-containing macrocyclic complexes in which there is no thiolate bridging: synthesis, structure and electrochemistry of some dizinc(II) complexes
作者:Sally Brooker、Tony C Davidson
DOI:10.1016/s0020-1693(00)00166-3
日期:2000.8
Abstract The synthesis of three dizinc(II) Schiff base macrocycliccomplexes, [Zn2L1](CF3SO3)2 (1), [Zn2L2](CF3SO3)2 (2) and [Zn2L3](CF3SO3)2 (3), from 2,6-diformyl-4-methyl-thiophenolate, the appropriate amine (diethylenetriamine, N-(3-aminopropyl)-1,3-diaminopropane and triethylenetetramine respectively) and zinc template ions, is detailed. Complex 1 is unstable in solution. Single crystal structure
curiously, the potentials for the oxidation processes are almost invariant whereas those for the reduction processes form “star” clusters of stoichiometry [Ni2L1]4(ClO4)}. These “stars” stack together, via π–π-stacking interactions, vary as anticipated. EPRspectroscopy shows that the first one-electron reduction process and the first one-electron to form two-dimensional sheets, which are separated
[Ni2L1](ClO4)2·MeCN·1/硫氰酸根离子的单晶X射线分析,分别形成[Ni2L1(NCS)2]4和[Ni2L2(NCS)2]5,而3没有。单晶 X 射线 4 H2O, 1a [直接由镍 (II) 模板离子、2,6-二甲酰基-4-甲基苯硫酚盐和配合物 4·2 MeCN 和 5·MeCN 的 1,4 分析显示结果是相邻的方形平面和八面体镍 (II) 离子。二氨基丁烷]表明镍 (II) 离子处于方平面 N2S2 环境中,并且四个“弓形”的两个单电子氧化和两个单电子还原是 MeCN 中 1-3 的电化学特征:二镍大环在围绕单个中心高氯酸盐模板离子的不对称单元包装,奇怪地将其包裹起来,氧化过程的电位几乎是不变的,而还原过程的电位形成化学计量的“星”簇[Ni2L1]4(ClO4)}。这些“星星”通过 π–π 堆叠相互作用堆叠在一起,正如预期的那样变化。EPR光谱表明,第一个单电子还原过