Synthesis, Structure, and Chemistry of New, Mixed Group 14 and 16 Heterocycles: Nucleophile-Induced Ring Contraction of Mesocyclic Dications
作者:Eric Block、Evgeny V. Dikarev、Richard S. Glass、Jin、Bo Li、Xiaojie Li、Shao-Zhong Zhang
DOI:10.1021/ja065037j
日期:2006.11.1
More than 40 new 4- to 12-membered ring heterocycles containing various combinations of Group 14 and 16 elements Si, Sn, S, Se, and Te have been synthesized and fully characterized. Synthesis of these small-ring as well as medium-ring (mesocyclic) heterocycles from alpha,omega-dihalides is facilitated by the presence of gem-dialkylsilyl and gem-dialkylstannyl groups in the precursors. Conformations
[FeFe]-Hydrogenase H-Cluster Mimics with Unique Planar μ-(SCH<sub>2</sub>)<sub>2</sub>ER<sub>2</sub>Linkers (E=Ge and Sn)
作者:Hassan Abul-Futouh、Laith R. Almazahreh、Takahiro Sakamoto、Nhu Y. T. Stessman、Dennis L. Lichtenberger、Richard S. Glass、Helmar Görls、Mohammad El-Khateeb、Philippe Schollhammer、Grzegorz Mloston、Wolfgang Weigand
DOI:10.1002/chem.201603843
日期:2017.1.5
Analogues of the [2Fe‐2S] subcluster of hydrogenase enzymes in which the central group of the three‐atom chain linker between the sulfur atoms is replaced by GeR2 and SnR2 groups are studied. The six‐membered FeSCECS rings in these complexes (E=Ge or Sn) adopt an unusual conformation with nearly co‐planar SCECS atoms perpendicular to the Fe‐Fe core. Computational modelling traces this result to the
Electrochemical Proton Reduction Catalyzed by [Fe<sub>2</sub>
(CO)<sub>6</sub>
{μ-(TeCH<sub>2</sub>
Te)}] Model that Mimics the Structure of the Active Site of [FeFe]-Hydrogenase
In this report we discuss the synthesis of [Fe2(CO)6μ‐(TeCH2Te)}] (2) using Fe3(CO)12 and Me2Sn(CH2I)2 in the presence of potassium tellurocyanate, freshly prepared. The resulting complex was characterized by different spectroscopicmethods (1H, 13C1H} and 125Te1H} NMR) as well as X‐ray diffraction analysis. Moreover, we investigate the redox properties and the catalytic behavior of 2 in the presence
在本报告中,我们讨论了在钾存在下使用Fe 3(CO)12和Me 2 Sn(CH 2 I)2合成[Fe 2(CO)6 μ-(TeCH 2 Te)}](2)新鲜制备的碲酸氰酸盐。通过不同的光谱方法(1 H,13 C 1 H}和125 Te 1 H} NMR)以及X射线衍射分析对所得复合物进行表征。此外,我们研究了氧化还原性能和催化性能2 在弱酸和中等酸的存在下,分别以乙酸(AcOH)和三氟乙酸(TFA)作为质子源。
Halomethyl—metal compounds L. Preparation of monohalomethyl derivatives of germanium, tin, lead and mercury via halomethylzinc halides
作者:Dietmar Seyferth、S. Brian Andrews
DOI:10.1016/s0022-328x(00)90195-5
日期:1971.7
of iodomethylzinc iodide with trimethylchlorogermane gave in low yield both Me3GeCH2I and Me3GeCH2GeMe3. These compounds were obtained in much better yield when ICH2ZnI was allowed to react with germanium tetrachloride and the reaction product was methylated with MeMgBr. The reaction of iodomethyl-tin compounds with silver chloride and bromine in acetonitrile served well in the preparation of Me3SnCH2Cl
Synthesis, Gas-Phase Photoelectron Spectroscopic, and Theoretical Studies of Stannylated Dinuclear Iron Dithiolates
作者:Richard S. Glass、Nadine E. Gruhn、Edward Lorance、Maya S. Singh、Nhu Y T. Stessman、Uzma I. Zakai
DOI:10.1021/ic050526q
日期:2005.8.1
Stannylated dinuclear iron dithiolates (mu-SSnMe(2)CH(2)S)[Fe(CO)(3)](2), (mu-SCH(2)SnMe(2)CH(2)S) [Fe(CO)(3)](2), and (mu-SCH(2)SnMe(3))(2)[Fe(CO)(3)](2), which are structurally similar to the active site of iron-only hydrogenase, were synthesized and studied by gas-phase photoelectron spectroscopy. The orbital origins of ionizations were assigned by comparison of He I and He II photoelectron spectra and with