The synthesis and catalytic properties of imidazolinium salts and their palladium(II) complexes
作者:Beyhan Yiğit
DOI:10.1007/s11243-011-9573-0
日期:2012.3
Three 1,3-dialkylimidazolinium chloride salts and their palladium(II) complexes have been synthesized and characterized by elemental analysis, 1H NMR, 13C NMR and IR spectroscopy. The catalytic activities of the 1,3-dialkylimidazolinium chloride salts and their complexes in the Heck and Suzuki coupling reactions were investigated.
New photoluminescent CuIN4 chromophores. Stabilisation of copper(I) by unconjugated diimines
作者:Shubhamoy Chowdhury、Goutam K. Patra、Michael G. B. Drew、Nitin Chattopadhyay、Dipankar Datta
DOI:10.1039/a909224b
日期:——
Two new photoluminescent homoleptic distorted tetrahedral CuIN4 chromophores with CuII/I potentials of 0.66–0.81 V vs. SCE are isolated by using two unconjugated diimines (2∶1 condensates of R1R2CO and ethylenediamine; R1 = Ph, R2 = H; R1 = R2 = Ph) as ligands.
通过使用两种非共轭二亚胺(R1R2CO 和乙二胺的 2∶1 缩合物;R1 = Ph,R2 = H;R1 = R2 = Ph)作为配体,分离出两种新的光致发光同色变形四面体 CuIN4 发色团,其 CuII/I 电位为 0.66-0.81 V vs. SCE。
Stereochemical study of imines and theirN-borane adducts by1H,11B,13C and15N NMR
作者:Armando Ariza-Castolo、M. Angeles Paz-Sandoval、Rosalinda Contreras
DOI:10.1002/mrc.1260300612
日期:1992.6
The synthesis and NMR spectra of the N-borane adducts of two diimines, N-borane-bis(α-phenylethylidene)ethylenediamine and N-borane-bis(α-phenylbenzylidene)ethylenediamine, and four imines, N-borane-α-methylethylidene-2-phenylethylamine, two N-borane-α-phenylethylidene-n-butylamines and N-borane-α-phenylbenzylidene-n-butylamine, are reported. The NMR spectra of the N-borane adducts of these imines can be used to determine their configuration.
Preparation and catalytic studies of bis(halogeno)dioxomolybdenum(VI)-diimine complexes
作者:Željko Petrovski、Martyn Pillinger、Anabela A. Valente、Isabel S. Gonçalves、Alan Hazell、Carlos C. Romão
DOI:10.1016/j.molcata.2004.10.004
日期:2005.3
Dioxomolybdenum(VI) complexes of the type MoO2X2L containing ethylenediimine ligands were prepared in good yield by reaction of MoO2X2(THF)2 (X = Cl, Br) with the bidentate ligands Ph2CNCH2CH2NCPh2 (PBED) or PhCHNCH2CH2NCHPh (BED). The crystal structure of MoO2Br2(BED) was determined by X-ray diffraction. The dichloro complexes were active as catalysts for the reaction of cyclooctene with tert-butyl
通过MoO 2 X 2(THF)2(X = Cl,Br)与双齿配体Ph 2 CNCH 2 CH 2 NCPh的反应,可以高收率制备含乙二亚胺配体的MoO 2 X 2 L型二氧钼(VI)配合物2(PBED)或PhCHNCH 2 CH 2 NCHPh(BED)。通过X射线衍射确定MoO 2 Br 2(BED)的晶体结构。二氯配合物作为环辛烯与叔胺反应的催化剂具有活性反应开始后最多7小时内,在55°C的氢过氧化丁基醚(TBHP)生成环氧环辛烷作为唯一产物。使用MoO 2 Cl 2(BED)(63 mol mol Mo -1 h -1)获得了最高的初始活性。还测试了其他烯烃,并以环辛烯>环十二碳烯> (R)-(+)-柠檬烯>环己烯> 反式-2-辛烯> 1-辛烯的顺序降低了活性。对于环辛烯的环氧化,二溴配合物显示出比二氯配合物低得多的活性。
Synthesis and characterization of tetracarbonyl complexes of molybdenum and tungsten with functionalized imines. Crystal structure of cis-Mo(CO)4[CH3)(C6H5) C=N (CH)2)]2
作者:M.Angeles Paz-Sandoval、M.Eugenia Domínguez-Durán、Claudia Pazos-Mayen、Armando Ariza-Castolo、M. de Jesús Rosales-Hoz、Rosalinda Contreras
DOI:10.1016/0022-328x(94)05278-j
日期:1995.4
compounds: 4 and 5; 8 and 9; 11 and 12. NMR data analysis established unambigously the configuration of the following nine complexes: confirmed the configuration and chemical shifts assignments for complexes 11 and 12. The 13C chemical shifts of the carbonyl groups are particularly useful in the characterization of the molybdenum compounds. Single-crystal X-ray diffraction studies of 4 confirm the
一系列通式为[M(CO)4 L 2的八面体的顺式-亚胺四羰基钼和钨配合物,其中这些钼和钨的亚胺螯合物具有环外双键。这些配合物的一致结构特征似乎是亚胺配体的螯合键,随后围绕碳氮键旋转。这种现象导致异构化合物:4和5;8和9; 11和12。NMR数据分析明确确定了以下9种配合物的构型:确认了配合物11和12的构型和化学位移分配。羰基的13 C化学位移在钼化合物的表征中特别有用。的单晶X射线衍射研究4确认的非对称配合物的形成顺式- [反式-2,7-二苯基-3,6-二氮杂-2,6-辛二烯] tetracarbonylmolybdenum。用单位晶胞参数对R和R w的全矩阵最小二乘技术在空间群P 2 1 / n中结晶该复合物。对于4706个观察到的反射,其值分别为0.052和0.064。获得的数据表明该结构已被半分子苯溶剂化。通过13 C NMR光谱获得了亚胺1与Mo(CO)4(NBD)单配位的证据,并提供了对复合物形成机理的一些见解。