C–F Bond Cleavage Reactions with Beryllium, Magnesium, Gallium, Hafnium, and Thorium Halides
作者:Fabian Dankert、H. Lars Deubner、Matthias Müller、Magnus R. Buchner、Florian Kraus、Carsten von Hänisch
DOI:10.1002/zaac.201900297
日期:2020.9.30
The work describes unexpected stoichiometric C–F bond cleavage reactions of beryllium, magnesium, gallium, hafnium and thorium halides with α,α,α‐trifluorotoluene. The reaction of BeBr2 / GaBr3 or MgBr2 / GaBr3 mixtures as well as neat GaI3 with α,α,α‐trifluorotoluene in the presence of (OSi2Me4)2 (I) yields the carbenium ion containing compounds [Ph‐C(O2Si2Me4)][GaX4] (X = Br: 1, X = I/F: 2). Both
这项工作描述了铍,镁,镓,ha和th的卤化物与α,α,α-三氟甲苯的意外化学计量CF键断裂反应。在(OSi 2 Me 4)2(I)存在下,BeBr 2 / GaBr 3或MgBr 2 / GaBr 3混合物以及纯GaI 3与α,α,α-三氟甲苯的反应产生含碳离子的化合物[ Ph‐C(O 2 Si 2 Me 4)] [GaX 4 ](X = Br:1,X = I / F:2)。成功地表征了这两种化合物,并且观察到在引入甲硅烷氧基单元的情况下的脱氟型反应。化合物1的特征还在于单晶X射线衍射分析。的转化率α,α,α三氟甲苯与BEI 2,HFI 4或的Th1 4被证明是与地层的halodefluorination型反应α,α,α -triiodotoluene(3)。首次进行了足够的NMR光谱分析和X射线晶体学表征3。
Some new thorium (IV) Complexes of azoester ligands (Part-II)
作者:A. K Srivastava、A. S Chauhan、Kishor Arora
DOI:10.13005/ojc/31.special-issue1.18
日期:2015.10.30
Some new complexes of thorium (IV) metal by varying anions ( viz. Cl,I,NO3 and OAc -) with azoester ligand have been synthesized. These complexes are characterized by conventional methods viz. melting point, conductance measurements as well as by spectral methods viz. IR including far IR, UV –visible spectral studies. Thermal studies viz. DTA analysis of some of the representatives have also been done
Tertiary phosphine derivatives of the f-block metals. Preparation of X4M(Me2PCH2CH2PMe2)2, where X is halide, methyl or phenoxy and M is thorium or uranium. Crystal structure of tetraphenoxybis[bis(1,2-dimethylphosphino)ethane]uranium(IV)
作者:Peter G. Edwards、Richard A. Andersen、Allan Zalkin
DOI:10.1021/ja00416a019
日期:1981.12
Through a number of tertiary phosphinecomplexes or uranium halides have been claimed, most of the claims have been shown to be false. In this communication we describe the synthesis of some authentic bis(1,2-dimethylphosphino)ethane (dmpe) complexes of uranium(IV) and thorium(IV) halides of the type X/sub 4/M(dmpe)/sub 2/ and their conversion to the tetramethyl and tetraphenoxo derivatives. The crystal
Physico-chemical Investigation of Th(IV) and UO2(VI) Complexes of Schiff Bases
作者:Sonal Agnihotri、Kishor Arora
DOI:10.14233/ajchem.2013.13960
日期:——
Schiff bases were obtained using p-methoxy benzaldehyde and p-chloro benzaldehyde and 2-amino pyridine to prepare new complexes of thorium(IV) and dioxouranium(VI) metals by various anions. The synthesized ligands and complexes were analytically studied through spectral studies, elemental analysis conductance measurements along with semi empirical and thermogravimetric methods. The complexes were assigned various coordination numbers ranging from 6-10 on the basis of these studies.
Infrared and thermal behaviour of thorium(IV) and oxozirconium(IV) complexes of dibenzyl sulphoxide
作者:R.K. Agarwal、Pravesh Kumar、H.K. Rawat
DOI:10.1016/0040-6031(85)85461-7
日期:1985.7
Abstract A series of complexes of thorium(IV) and oxozirconium(IV) with dibenzyl sulphoxide having the general compositions ThX 4 ·2BzSO (X = Cl, Br, NCS or NO 3 ), ThI 4 ·4BzSO, Th(ClO 4 ) 4 ·6BzSO, ZrOX 2 ·2BzSO (X = Cl, Br, I, NCS, NCSe or BPh 4 ) and ZrO(ClO 4 ) 2 · 6BzSO were synthesised and characterized by elemental analyses, electrolytic conductivity, moleculer weight, IR, and magnetic susceptibility