Results 31 to 40 of about 16,367 (217)

Radiolysis of Crystalline Oxalato Complexes [PDF]

open access: yesBulletin of the Chemical Society of Japan, 1961
Several crystalline metal oxalato complexes were irradiated with Co/sup 6//sup 0/ gamma rays. Oxalate ions such as in sodium oxalate and ferrous oxalate were found to be very stable to gamma radiation, compared with those in metal oxalato complexes. Oxalate ions with large covalent character are decomposed more easily by gamma radiation.
Akira Sugimori, Gen-ichi Tsuchihashi
openaire   +1 more source

Hexaaquatris(oxalato)dipraseodymium(III) pentahydrate (a redetermination)

open access: yesActa Crystallographica Section C Crystal Structure Communications, 1988
Acta Crystallographica Section C-Crystal Structure ...
Beagley, B.   +4 more
openaire   +3 more sources

Poly[methylamine-μ-oxalato-copper(II)] [PDF]

open access: yesActa Crystallographica Section E Structure Reports Online, 2006
The six-coordinate copper(II) ions in the title compound, [Cu(C2O4)(CH5N)], experience a Jahn-Teller distortion. The structure is a two-dimensional coordination network, with three crystallographically independent oxalate ions, two of them centrosymmetric, bridging CuII ions in three different coordination modes.
Keene, Tony D.   +2 more
openaire   +3 more sources

Mecanismo de biosorción de hierro ferroso por sustancias poliméricas extracelulares de la bacteria acidófila Acidiphilium sp

open access: yesRevista de Metalurgia, 2016
El objetivo de este trabajo fue estudiar la absorción de Fe(II) por Sustancias Poliméricas Extracelulares (SPE) provenientes de la bacteria acidófila Acidiphilium 3.2Sup(5). Las SPE fueron extraídas usando EDTA. SPE de A.
Jaime M. Tapia   +4 more
doaj   +1 more source

Bis(cyclohexylammonium) tetrachlorido(oxalato)stannate(IV) [PDF]

open access: yesActa Crystallographica Section E Structure Reports Online, 2013
The title salt, (C6H14N)2[Sn(C2O4)Cl4], was obtained as a by-product from the reaction between 2C6H14N(+)·C2O4 (2-)·1.5H2O and SnCl2·2H2O. The cyclo-hexyl-ammonium cation has a chair conformation. The complex anion consists of an oxalate anion chelating the SnCl4 moiety, resulting in a distorted octa-hedral coordination sphere of the Sn(IV) atom with ...
Hélène Cattey   +4 more
openaire   +3 more sources

Iron oxides in plinthic soils on sedimentary deposits in northeastern Brazil

open access: yesRevista Brasileira de Ciência do Solo, 1999
This study was conducted to examine the distribution and nature of Fe oxides in plinthic soils on the sediments of Barreiras Group (in the state of Piauí) and Itapecuru Formation (in the state of Maranhão) in Northeastern Brazil.
R. J. Heck, A. R. Mermut, M. C. Santos
doaj   +1 more source

Effect of N-donor ancillary ligands on structural and magnetic properties of oxalate copper(II) complexes [PDF]

open access: yes, 2014
Through varying the auxiliary N-donor ligands under similar synthetic conditions nine new compounds: [Cu(C2O4)(pz)]n (1), [Cu(C2O4)(apz)2]n·(3H2O)n (2), [Cu2(μ-C2O4)2(H2O)2(ampz)4] (3), [Cu(C2O4)(mpz)2]n (4), [Cu(C2O4)(aind)2]n (5), [Cu2(C2O4)2(bpzm)2]n·(
Kalińska, Bożena   +5 more
core   +1 more source

Avaliação da ingestão alimentar e excreção de metabólitos na nefrolitíase

open access: yesBrazilian Journal of Nephrology, 2014
Introdução: A nefrolitíase é uma patologia frequente, com alta taxa de prevalência e recorrência, ocorrendo por processo multifatorial e complexo. Objetivo: Analisar as principais características dietéticas e metabólicas de pacientes com nefrolitíase e
Évellyn Alves Gordiano   +3 more
doaj   +1 more source

Light: a rare reaction product [PDF]

open access: yes, 2011
The production of visible light by chemical reactions constitutes interesting and fascinating phenomena and several reaction mechanisms are discussed to rationalize excited state formation.
AUGUSTO, Felipe Alberto   +9 more
core   +2 more sources

EFEITO DO MÉTODO DE COMPLEXAÇÃO COMBINANDO EDTA - CITRATO E COPRECIPITAÇÃO EM MEIO OXALATO NA SÍNTESE DA SrCo0,8Fe0,2O3-d

open access: yesHolos, 2015
Esta trabalho enfoca o método de síntese de coprecipitação para preparação da perovsquita SrCo0,8Fe0,2O3-d e suas caracterizações, desenvolvendo uma rota metodológica alternativa de síntese a partir da coprecipitação via meio oxalato.
Andarair Gomes Santos   +3 more
doaj   +1 more source

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