TY - JOUR

T1 - Synthesis and Study of Bismuth(III) Oxalates Precipitated from Mineral Acid Solutions

AU - Timakova, E. V.

AU - Timakova, T. E.

AU - Afonina, L. I.

AU - Bulina, N. V.

AU - Titkov, A. I.

AU - Gerasimov, K. B.

AU - Volodin, V. A.

AU - Yukhin, Y. M.

N1 - The authors express their gratitude to the Center for Collective Use “High Technologies and Nanosystems Analytics” of Novosibirsk State University for the equipment provided for recording Raman spectra and to the Chemical Research Center for Collective Use of the Institute of Organic Chemistry SB RAS for carrying out spectral (IR) measurements. Публикация для корректировки.

PY - 2023/9

Y1 - 2023/9

N2 - Bismuth oxalates BiOH(C2O4), Bi2(C2O4)3·6H2O, Bi2(C2O4)3·7H2O, and Bi2(C2O4)3·8H2O were obtained by precipitation from solutions of bismuth in perchloric, nitric, and hydrochloric acids with addition of oxalic acid. The compositions of compound were confirmed by X-ray powder diffraction, chemical analysis, IR and Raman spectroscopy, and thermogravimetry. It has been shown that in the composition of bismuth(III) oxalate hydrates Bi2(C2O4)3·хH2O, bismuth cations are coordinated by the oxygen atoms of carboxyl groups of oxalate ions and water molecules in the same way, thus, in view of the structural features, compositions of the compounds can be described by the general formula {[Bi2(C2O4)3(H2O)4]∙(x–4)H2O}n. The conditions of oxidative thermolysis of BiOH(C2O4) and Bi2(C2O4)3·7H2O leading to the formation of tetragonal modification of bismuth oxide β-Bi2O3 were determined.

AB - Bismuth oxalates BiOH(C2O4), Bi2(C2O4)3·6H2O, Bi2(C2O4)3·7H2O, and Bi2(C2O4)3·8H2O were obtained by precipitation from solutions of bismuth in perchloric, nitric, and hydrochloric acids with addition of oxalic acid. The compositions of compound were confirmed by X-ray powder diffraction, chemical analysis, IR and Raman spectroscopy, and thermogravimetry. It has been shown that in the composition of bismuth(III) oxalate hydrates Bi2(C2O4)3·хH2O, bismuth cations are coordinated by the oxygen atoms of carboxyl groups of oxalate ions and water molecules in the same way, thus, in view of the structural features, compositions of the compounds can be described by the general formula {[Bi2(C2O4)3(H2O)4]∙(x–4)H2O}n. The conditions of oxidative thermolysis of BiOH(C2O4) and Bi2(C2O4)3·7H2O leading to the formation of tetragonal modification of bismuth oxide β-Bi2O3 were determined.

KW - bismuth(III) oxalate

KW - bismuth(III) oxide

KW - oxalate precursors

KW - precipitation

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85174466315&origin=inward&txGid=36ed2920079525f84f8204aa78d26ca1

UR - https://www.mendeley.com/catalogue/2a8c1086-899d-334c-828f-e3ba19799fd5/

U2 - 10.1134/S1070363223090116

DO - 10.1134/S1070363223090116

M3 - Article

VL - 93

SP - 2295

EP - 2304

JO - Russian Journal of General Chemistry

JF - Russian Journal of General Chemistry

SN - 1070-3632

IS - 9

ER -