Heavy cyclopropene analogues R4SiGe2 and R4Ge3 (R = SiMe Bu2) – New members of the cyclic digermenes family
摘要:
1H-Siladigermirene R4SiGe2 (2a) and 1H-trigermirene R4Ge3 (2b) (R = SiMe'Bu,) with a Ge=Ge double bond were synthesized by the reaction of tetrachlorodigermane RGeCl2-GeCl2R with dilithiosilane R2SiLi2 and dilithiogermane R2GeLi2, respectively. The skeletal Ge=Ge double bond of 2a is trans-bent (51.0(2)degrees) with a bond distance of 2.2429(6) angstrom. The reaction of both 2a and 2b with CH2Cl2 resulted in the formation of unusual four-membered ring compounds 5a and 5b as a result of a ring expansion reaction. 1H-Trisilirene 7a and 3H-disilagermirene 7b with an Si=Si double bond also smoothly reacted with CH2Cl2 to yield the four-membered ring systems 8a and 8b, respectively. (c) 2006 Elsevier B.V. All rights reserved.
Heavy cyclopropene analogues R4SiGe2 and R4Ge3 (R = SiMe Bu2) – New members of the cyclic digermenes family
摘要:
1H-Siladigermirene R4SiGe2 (2a) and 1H-trigermirene R4Ge3 (2b) (R = SiMe'Bu,) with a Ge=Ge double bond were synthesized by the reaction of tetrachlorodigermane RGeCl2-GeCl2R with dilithiosilane R2SiLi2 and dilithiogermane R2GeLi2, respectively. The skeletal Ge=Ge double bond of 2a is trans-bent (51.0(2)degrees) with a bond distance of 2.2429(6) angstrom. The reaction of both 2a and 2b with CH2Cl2 resulted in the formation of unusual four-membered ring compounds 5a and 5b as a result of a ring expansion reaction. 1H-Trisilirene 7a and 3H-disilagermirene 7b with an Si=Si double bond also smoothly reacted with CH2Cl2 to yield the four-membered ring systems 8a and 8b, respectively. (c) 2006 Elsevier B.V. All rights reserved.
Oxidative addition of Group 14 hydrides to osmium(O), osmium(II) and ruthenium(O) complexes. Crystal structures of Os(SiEt3)H(CO )2 (PPh3) 2 and Os(Ge[p-tolyl]3) H(CO) 2(PPh3) 2
作者:George R. Clark、Kevin R. Flower、Clifton E.F. Rickard、Warren R. Roper、David M. Salter、L.James Wright
DOI:10.1016/0022-328x(93)83374-5
日期:1993.12
Treatment of M(CO)2(PPh3)3 with HER2R′ (M Os; E Si; R R′ Me, Et, Ph; R Ph, R′ H; E Ge, Sn; R R′ p-tolyl; M Ru; E Sn; R R′= p-tolyl) affords the corresponding oxidativeaddition products M(ER2R′)H(CO)2(PPh3)2 (1–8). The crystal structures of two complexes, Os(SiEt3)H(CO)2(PPh3)2 (2) and Os(Ge[p-tolyl])3H(CO)2(PPh3)2 (6) have been determined. Reaction between HSnMe3 and any one
Reaction of digermanes and related Ge-Si compounds with trifluoromethanesulfonic acid: synthesis of helpful building blocks for the preparation of Ge-Ge(Si)-catenated compounds
作者:Kirill V. Zaitsev、Yuri F. Oprunenko、Andrei V. Churakov、Galina S. Zaitseva、Sergey S. Karlov
DOI:10.1515/mgmc-2014-0012
日期:2014.1.1
Abstract The reaction of a series of compounds, Ar3 Ge-MR3, 1–4 (Ar=Ph, p-Tol, M=Si, Ge, R=Ph, Me, tBu), with one equivalent of trifluoromethanesulfonic acid (HOTf) was investigated. The corresponding triflates were isolated in several cases. The molecular structure of Ph3 Ge-GePh2 OTf (5) in solid state was investigated by X-ray analysis. The triflates were converted to the corresponding chlorides
Radical Cyclizations of Acylgermanes. New Reagent Equivalents of the Carbonyl Radical Acceptor Synthon
作者:Dennis P. Curran、Ulf Diederichsen、Michael Palovich
DOI:10.1021/ja970219m
日期:1997.5.1
varied over 2 orders of magnitude by changing the germanium substituents. Acyltriarylgermanes are among the best radical acceptors yet identified, and this quality makes them superior reagent equivalents of the carbonyl radical acceptor synthon. Parent cyclizations in the 4-exo and 7-exo modes fail. Attempted 3-exo cyclization results in a 1,2-acyl shift...
Compounds of Group 14 Elements with an Element–Element (E = Si, Ge, Sn) Bond: Effect of the Nature of the Element Atom
作者:Kirill V. Zaitsev、Elmira Kh. Lermontova、Andrei V. Churakov、Viktor A. Tafeenko、Boris N. Tarasevich、Oleg Kh. Poleshchuk、Anastasia V. Kharcheva、Tatiana V. Magdesieva、Oleg M. Nikitin、Galina S. Zaitseva、Sergey S. Karlov
DOI:10.1021/om501293t
日期:2015.6.22
Ph3Ge-Ge(SiMe3)2-GePh3 (6). The molecular structures of 1, 2, and 6 were investigated by X-ray analysis. By UV/visible spectroscopy it is established that introduction of a tin atom results in a significant bathochromic absorption shift. Furthermore, according to cyclic voltammetry, oxidation potentials decrease in the order 1 > 2 > 3. The electronic structures of 1–4 and related (Me3Si)3Ge-SiPh3 were
Molecular Oligogermanes and Related Compounds: Structure, Optical and Semiconductor Properties
作者:Kirill V. Zaitsev、Viktor A. Tafeenko、Yuri F. Oprunenko、Anastasia V. Kharcheva、Zhaisan Zhanabil、Yerlan Suleimen、Kevin Lam、Vladimir B. Zaitsev、Anna V. Zaitseva、Galina S. Zaitseva、Sergey S. Karlov
DOI:10.1002/asia.201700151
日期:2017.6.1
fluorescence in the solid state and in solution) and semiconducting properties of a number of di‐ and trigermanes as well as related silicon‐ and tin‐containing germanes, 1–6 ((p‐Tol)3GeGeMe3 (1), Ph3SnGe(SiMe3)3 (2), (C6F5)3GeGePh3 (3), (p‐Tol)3GeSiMe2SiMe3 (4), (p‐Tol)3GeGeMe2Ge(p‐Tol)3 (5), (p‐Tol)3GeSiMe2SiMe2Ge(p‐Tol)3 (6)) were investigated. Molecular structures of 5 and 6 were studied by X‐ray diffraction