Studies on Some Thorium(IV) Complexes with High Coordination Numbers Derived from Semicarbazones of 4‐Aminoantipyrine
摘要:
The interaction of thorium(IV) salts with 4 [N-(benzylidene)amino] antipyrine semicarbazone (BAAPS), 4[N-(4-methoxybenzylidene)amino] antipyrine semicarbazone (MBAAPS), 4[N-(4'-dimethoxyaminobenzylidene)amino]antipyrine semicarbazone (DABAAPS), 4[N-(2'-nitrobenzylidene)amino]antipyrine semicarbazone (2'-NO(2)BAAPS), and 4[N-(3'-nitrobenzylidene)amino]antipyrine semicarbazone (3-NO(2)BAAPS) in non-aqueous solvents resulted in the formation of [ThL2X4] (N = Cl, Br, or NCS), [ThL2I2]I-2, [ThL2](ClO4)(2) or [ThL(NO3)(4)] (L = BAAPS, MBAAPS, DABAAPS, 2-NO(2)BAAPS, or 3-NO(2)BAAPS). All of these compounds were characterized by elemental analyses, electrical conductivity, IR, and thermal methods. X-ray powder diffraction studies of a representative complex were also undertaken. Th(IV) displays the coordination numbers 6, 8, 10, and 11 in these compounds depending on the nature of the coordinated anion and the stoichiometry.
with what is predicted by the selectionrules for the room temperature structure. Thus we investigated Raman scattering in the temperature range 10–300 K to look for a structure change and obtain a better understanding of the spectroscopy of U4+ in ThBr4 and ThCl4. At room temperature, the observed Raman lines have been assigned on the basis of a D4h factorgroupanalysis. The study of the temperature
Methyl cyanide and NN-dimethylacetamide complexes of thorium and uranium tetrahalides, uranyl chloride, and uranyl bromide
作者:K. W. Bagnall、D. Brown、P. J. Jones
DOI:10.1039/j19660001763
日期:——
The tetrachloride and tetrabromide of thorium and of uranium react at room temperature with anhydrous methyl cyanide to form the complexes MX4,4CH3CN (M = Th and U; X = Cl and Br). The tetrabromide complexes react with NN-dimethylacetamide (DMA) to form the compounds MBr4,4DMA. Methyl cyanide and DMA complexes of uranyl chloride and uranyl bromide, UO2Cl2,CH3CN and UO2X2,2DMA (X = Cl and Br) have also
四氯化和钍和铀的四溴化在室温下用无水甲基氰反应以形成复合物MX 4,4CH 3 CN(M = Th和U; X = Cl和Br)。四溴化的配合物反应的NN二甲基乙酰胺(DMA),以形成所述化合物MBR 4,4DMA。甲基氰化物和铀酰氯化物和溴化双氧铀,UO DMA络合物2氯2,CH 3 CN和UO 2 X 2,2DMA(X = Cl和Br)也被制备。据报道这些配合物的一些化学性质,红外光谱和磁化率。
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
N-substituted urea complexes of thorium and uranium tetrahalides
作者:K. W. Bagnall、J. G. H. du Preez、M. L. Gibson
DOI:10.1039/j19710002124
日期:——
Uranium tetrachloride and tetrabromide form 1 : 2 complexes with NNN′N′-tetramethylurea (tmu), NNN′N′-tetraethylurea (teu), NN′-dimethyl-NN′-diethylurea (ddeu) and NN′-dimethyl-NN′-diphenylurea (ddu), whereas uranium tetrachloride forms 1 : 4 complexes with NN′-dimethylurea (dmu) and with NNN′-trimethylurea (trmu). In contrast, the thorium tetrahalides form the 1 : 3 complexes ThCl4,3ddu, ThCl4,3tmu
A Simple Access to Pure Thorium(IV) Halides (ThCl
<sub>4</sub>
, ThBr
<sub>4</sub>
, and ThI
<sub>4</sub>
)
作者:H. Lars Deubner、Stefan Sebastian Rudel、Florian Kraus
DOI:10.1002/zaac.201700356
日期:2017.12.13
In this work we present a facile, lab scale synthesis for thorium tetrahalides ThX4 (X = Cl, Br & I). The reaction between the easily available ThO2 and AlX3 (X = Cl, Br & I) and a subsequent in situ chemical vapour transport (CVT) leads to a product of high purity which is obtained in the form of crystals or large aggregates of crystals. Their identity and purity was evidenced by X-ray powder diffraction