While the oxalate ion is planar in some crystalline oxalates, it is twisted in others, with variable twist angles between the carboxylate groups. Calculations by AM1 and ab initio procedures have now shown free oxalate ion to have an orthogonal D 2h structure. Introduction of disembodied charge...
The binding of the oxalate anion is symmetrical in both the N and C lobes, unlike in diferric dioxalate human lactoferrin, where the oxalate anion binds the metal ion symmetrically in the C lobe and asymmetrically in the N lobe. 展开 关键词:...
Photorhabdus luminescens is a Gram-negative, symbiotic bacterium associated with entomopathogenic nematodes of the genus Heterorhabditis. Several genes from this organism related to insecticidal properties are being examined for their potential in pest management. Oxalate...
As far as we are aware, this type of coordination polymer involving the simultaneously bridging oxalate and acetate ligands has not been studied so far... Q Zhang,W Yang,C Lu - 《Journal of Chemical Crystallography》 被引量: 0发表: 2006年 A meso‐Helical Coordination Polymer from Achiral Di...
Synthesis, X-ray Crystal Structure and Magnetic Properties of Oxalato-Bridged Copper(II) Complexes with 2,3-Bis(2-pyridyl)pyrazine, 2,3-Bis(2-pyridyl)quino... Five oxalate-containing copper(II) complexes of formula [Cu(dpq)(H2O)(ox)]·5H2O (1), [Cu(dpp)(H2O)(ox)]·H2O (2), [...
The salt crystallizes in the monoclinic space group P2(1)/n with unit cell dimensions of a =4.95, b =10.46, c =10.40 , β=92.57°, and Z =4. The structure contains one oxalate ion for every two CN 4 H 7 + ions, the latter being practically planar. The structure of the mono...
armoricana at St Michel en Grève, France (N 48°40.567′ W 3°34.467) at low tide and extracted in 0.05 M sodium oxalate solution, followed by ultrafiltration (concentration), diafiltration (demineralization) and freeze-drying based on the method previously described (Robic, Sassi et al.,...
作者: Yang Rongsheng Yu XiufenInstitute of Structural Chemistry, Fuzhou University 摘要: Introduction. The complexes of Mo(V) and oxalate are found to exist in several various configurations. As an anologous compound for the activecenter of Mo enzymes they have attracted broad attention. It was...
As a matter of fact, oxamido derivatives were the first examples of bulk molecular magnets.42 The first attractive property of oxalate bridges is that, although they connect metal ions through a minimum of three atoms, they are very efficient in transmitting an antiferromagnetic interaction. The ...
select article Experimental and theoretical studies on the modulation of the crystallization process and crystal morphology of calcium oxalate using Moringa oleifera bark extract Research articleAbstract only Experimental and theoretical studies on the modulation of the crystallization process and crystal morphol...