A Comparative Study of Tricarbonylmanganese Photoactivatable CO Releasing Molecules (PhotoCORMs) by Using the Myoglobin Assay and Time‐Resolved IR Spectroscopy
作者:Wilhelm Huber、Rolf Linder、Johanna Niesel、Ulrich Schatzschneider、Bernhard Spingler、Peter C. Kunz
DOI:10.1002/ejic.201200115
日期:2012.7
to act as photoactivatable CO-releasing molecules (PhotoCORMs) was studied with the UV/Vis spectroscopy-based myoglobinassay as well as by time-resolved IRspectroscopy. Within the series of compounds prepared, the steric bulk of the imidazolyl groups seems to significantly influence the CO-release kinetics and stoichiometry when using the myoglobinassay. In contrast, the time-resolved IR data suggest
配体三(咪唑-4-基)膦(4-tipH)、三(1,4-二异丙基咪唑-2-基)膦(2-tipiPr2)、三(吡啶-2-基)的三羰基锰(I)配合物制备了磷烷 (tpp) 和三 (N-甲基咪唑-2-基) 甲醇 (2-ticNMe)。它们充当 N,N,N 三足螯合剂。Mn(CO)3(tpp)]OTf 的固态结构由 X 射线衍射确定。使用基于紫外/可见光谱的肌红蛋白测定以及时间分辨红外光谱研究了这些复合物作为光活化 CO 释放分子 (PhotoCORMs) 的潜力。在制备的一系列化合物中,当使用肌红蛋白测定时,咪唑基的空间体积似乎显着影响 CO 释放动力学和化学计量。相比之下,时间分辨 IR 数据表明所有羰基配体在辐照后都会释放。
Rhodium(i) complexes bearing N-donor ligands: catalytic activity towards intramolecular cyclization of alkynoic acids and ligand lability
作者:Bradley Y.-W. Man、Mohan Bhadbhade、Barbara A. Messerle
DOI:10.1039/c1nj20094a
日期:——
structures of rhodium(I) complexes bearing tris(pyrazol-1-yl)toluidine (tpt) and tris(N-methylimidazol-2-yl)methanol (tim) ligands were examined in the solid state using single crystal X-ray diffraction, and in the solution state using variable temperature NMR spectroscopy. The solid state structures of the rhodium(I) tpt and rhodium(I) tim complexes showed that the ligands are bound to the rhodium(I) centre
cluster where each copper atom adopts a five-coordinate square-pyramidal geometry ligated by the tmim anion. The two ironcomplexes, [Fe II (Htmim) 2 ][Fe II Cl 4 ]·4MeOH ( 2 ) and [Fe III (Htmim) 2 ][Fe III Cl 4 ] 2 Cl ( 3 ), contain the isostructural [Fe(Htmim) 2 ] cation and tetrahedral [FeCl 4 ] − anion. While Htmim shows a normal tripodaltridentate mode in the ironcomplexes capping one face of an
已合成三脚架配体的三(1-甲基-1 H-咪唑-2-基)甲醇(Htmim)的铜(II)和铁(II,III)配合物,并通过元素分析,1 H NMR和红外光谱,磁矩测量和X射线晶体学。铜络合物[Cu 4(tmim)4(CF 3 SO 3)2](CF 3 SO 3)2·2MeOH(1)的结构可以看作是聚咪唑连接的四核簇,其中每个铜原子都采用由tmim阴离子结扎而成的五坐标方锥几何。[Fe II(Htmim)2] [Fe II Cl 4]·4MeOH(2)和[Fe III(Htmim)2] [Fe III Cl 4] 2 Cl(3)这两个铁络合物均含有同构结构[Fe (Htmim)2]阳离子和四面体[FeCl 4]-阴离子。尽管Htmim在覆盖基本为八面体配位球的一面的铁络合物中显示出正常的三脚架三齿模式,但其去质子化的物种却表现出与铜(II)离子不同寻常的非三脚架四齿配位。在室温下观察到的每1个Cu原子的磁矩为1
Brown, R.S.; Huguet, J., Canadian Journal of Chemistry, 1980, vol. 58, p. 889 - 901
作者:Brown, R.S.、Huguet, J.
DOI:——
日期:——
Canty, Allan J.; Titcombe, Louise A.; Skelton, Brian W., Journal of the Chemical Society, Dalton Transactions, 1988, p. 35 - 46
作者:Canty, Allan J.、Titcombe, Louise A.、Skelton, Brian W.、White, Allan H.