Skip to Main Content
Skip Nav Destination
GEOREF RECORD

Hydrothermal and ionothermal synthesis of mineral-related arsenates in the system CdO/MO/As (sub 2) O (sub 5) (M (super 2+) = Mg, Co, Ni, Cu, Zn) and their crystal structures

Tamara Dordevic, Sabrina Gerger and Ljiljana Karanovic
Hydrothermal and ionothermal synthesis of mineral-related arsenates in the system CdO/MO/As (sub 2) O (sub 5) (M (super 2+) = Mg, Co, Ni, Cu, Zn) and their crystal structures
European Journal of Mineralogy (October 2016) Pre-Issue Publication

Abstract

During systematic research on the mineral-related arsenates in the system CdO-MO-As (sub 2) O (sub 5) -H (sub 2) O (M (super 2+) = Mg, Co, Ni, Cu, Zn), three new Cd-containing arsenates Cd (sub 4.65) Ni (sub 0.35) (AsO (sub 4) ) (sub 2) (HAsO (sub 4) ) (sub 2) .4H (sub 2) O (1), Cd (sub 0.75) Co (sub 2.75) (H (sub 0.5) AsO (sub 4) ) (sub 2) (HAsO (sub 4) ) (2) and Cd (sub 1.25) Zn (sub 0.75) (HAsO (sub 4) ) (sub 2) .2H (sub 2) O (3) have been synthesized under hydrothermal conditions, while the Zn-arsenate Zn (sub 9) (AsO (sub 4) ) (sub 6) .4H (sub 2) O (4) and again 2 have been prepared under ionothermal conditions using the ionic liquid 1-ethyl-3-methylimidazolium bromide, (C (sub 6) H (sub 11) N (sub 2) )Br, as the solvent. Their crystal structures were determined using single-crystal X-ray diffraction data and refined to the reasonably low R-values: 1: - R (sub 1) = 0.030; 2 - R (sub 1) = 0.047; 3 - R (sub 1) = 0.029; 6 - R (sub 1) = 0.029. The compounds 1 , 2 and 3 are structural analogues of three different arsenate mineral phases. Compound 4: was for the first time synthesized using ionic liquid as the solvent and the hydrogen atoms were found and refined. Infrared and Raman spectra were measured and evaluated in order to obtain further information on the anion groups and especially on the short hydrogen bonds. The OH stretching frequency is in good agreement with the observed O ... O distances. The different approaches in the synthesis of mineral-related arsenates, the temperature treatment as well as the role of added water in ionothermal synthesis are also discussed.


ISSN: 0935-1221
EISSN: 1617-4011
Serial Title: European Journal of Mineralogy
Serial Volume: Pre-Issue Publication
Title: Hydrothermal and ionothermal synthesis of mineral-related arsenates in the system CdO/MO/As (sub 2) O (sub 5) (M (super 2+) = Mg, Co, Ni, Cu, Zn) and their crystal structures
Affiliation: Universitaet Wien, Institut fuer Mineralogie und Kristallographie, Vienna, Austria
Published: 20161017
Text Language: English
Publisher: Schweizerbart'sche Verlagsbuchhandlung (Naegele u. Obermiller), Stuttgart, Germany
References: 52
Accession Number: 2016-094592
Categories: Mineralogy of non-silicates
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 1 table
Secondary Affiliation: University of Belgrade, SRB, Serbia
Country of Publication: Germany
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Abstract, copyright, Schweizerbart'sche Verlagsbuchhandlung. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 201646
Close Modal

or Create an Account

Close Modal
Close Modal