نتایج جستجو برای: dichromate ion

تعداد نتایج: 206282  

2011
Lei Jin Ning Liu

The asymmetric part of the title compound, (C(10)H(16)N)(2)[Cr(2)O(7)], contains one cation and a half of the dichromate dianion, which has a staggered conformation and exhibits disorder of the bridging O atom around the inversion center over two positions in a 1:1 ratio. Weak inter-molecular C-H⋯O hydrogen bonds link cations and anions into a three-dimensional structure.

Journal: : 2022

This work describes the uncertainty calculation for determination of chromium oxide in leather. Following various steps which includes assembling a list sources uncertainty, with help basic formula used to calculate measure and as all parameters cause an influence on result because value associated it then effect diagram is made shows correlation between these indicates their result.All individ...

Journal: :Ecotoxicology and environmental safety 2000
T C Diamantino L Guilhermino E Almeida A M Soares

As a result of a widespread application in numerous industrial processes, chromium is a contaminant of many environmental systems. Chromium and their compounds are toxic to both invertebrates and vertebrates and, for this reason, there has been a search for suitable and less toxic alternatives. Molybdenum compounds have been studied as alternative to chromium compounds for some industrial appli...

Journal: :Cancer research 1983
M J Tsapakos T H Hampton K E Wetterhahn

DNA lesions were detected in rat organ nuclei following an i.p. injection of sodium dichromate. Kidney, liver, and lung nuclei were examined for DNA interstrand cross-links, strand breaks, and DNA-protein cross-links using the alkaline elution technique. The time course for formation of cross-links in kidney nuclei revealed the presence of DNA interstrand and DNA-protein cross-links 1 hr after ...

2017
Dohyun Moon Jong-Ha Choi

The asymmetric unit of the hydrated title salt, (C10H28N4)[Cr2O7]2·H2O [C10H28N4 = H4(cyclam) = 1,4,8,11-tetra-azonia-cyclo-tetra-deca-ne], contains two half-cations (both completed by crystallographic inversion symmetry), two dichromate anions and one water mol-ecule. The two [CrO7]2- anions exhibit a nearly staggered conformation, with bridging angles of 133.37 (11) and 136.28 (12)°. The dist...

2016
Dohyun Moon Keon Sang Ryoo Jong-Ha Choi

The structure of the title compound, [CrCl2(tn)2]2[Cr2O7] (tn = propane-1,3-di-amine; C3H10N2), has been determined from synchrotron data. The asymmetric unit contains one CrIII complex cation and half a [Cr2O7]2- anion. In the complex cation, the CrIII ion is coordinated by the four N atoms of two propane-1,3-di-amine (tn) ligands in the equatorial plane and by two Cl atoms in a trans configur...

Journal: :Chemical communications 2004
Sergey A Piletsky Elena V Piletska Kal Karim Frank Davis Seamus P J Higson Anthony P F Turner

A novel method of photochemical polymerization of thiophene derivatives in aqueous solution catalyzed by potassium dichromate and initiated by illumination is described.

Journal: :Acta Crystallographica Section E Structure Reports Online 2011

Journal: :Fluids 2023

Chromate and dichromate solutions used for the activation passivation of cadmium zinc galvanic coatings metal products are widely due to their ability form corrosion-protective films. Therefore, in this article, we examined kinetic features cathodic deposition Cd Zn during membrane electrolysis. As a result comprehensive experimental theoretical studies, depositions were analyzed under differen...

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