منابع مشابه
Stable Lewis acid chelate of a bis(imido) tungsten compound and implications for alpha-olefin dimerisation catalysis: a DFT study.
Dimerisation of alpha-olefins by a catalyst system comprising of a bis(imido) tungsten compound and a Lewis acid component has been investigated by density functional theory employing a catalyst model that closely mimics the real system together with ethylene chosen as a prototypical substrate. This study disclosed that the Lewis acid preferably forms four-membered chelates by bridging across t...
متن کاملPicture of a chelate in exchange: the crystal structure of NaHoDOTMA, a 'semi'-hydrated chelate.
Crystallography generally only provides static structural information. This can render it an ineffective technique for probing dynamic solution state processes. A crystal of HoDOTMA affords unique structures that effectively represent that of a lanthanide tetra-acetate chelate mid-way through the water exchange process.
متن کاملGadolinium chelate-associated nephrogenic systemic fibrosis.
Correspondence to: Dr Kei Pin Lin Tel: (65) 6222 3322 Fax: (65) 6326 5242 Email: binglin8@ yahoo.com.sg Nephrogenic systemic fibrosis (NSF) is a rare multisystem disease characterised by widespread tissue fibrosis. It is recognised for its epidemiological association in patients with chronic renal failure, after administration of gadolinium-chelate magnetic resonance (MR) contrast agent, partic...
متن کاملChelate Extraction of Metals into Ionic Liquids
In the solvent extraction of metal cations into ionic liquids, use of Brønsted acid-type chelate extractants has some advantages including simplicity in controlling extraction selectivity by selecting suitable aqueous phase pH values and simple back-extraction recovery of the extracted metals using acid solutions. In this review, various fundamental and applied research on metal extraction usin...
متن کاملThe Structure of Copper (II) -Histidine Chelate
The binding of Cu(II) by histidine in 1: 2 molar ratio has been investigated. The theoretical number of hydrogen ions displaced from each mole of bound llgand at several pH values was calculated considering all the possible interactions between Cu(II) and histidine involving (a) amino and carboxyl, (b) amino and imidazole, (c) imldazole and carboxyl, and (d) amino, imidazole, and carboxyl group...
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ژورنال
عنوان ژورنال: Journal of the Japan Society of Colour Material
سال: 1993
ISSN: 0010-180X
DOI: 10.4011/shikizai1937.66.501