Thermochemical and Spectral properties of Hydrates of Co(II), Ni(II) and Cu(II) Maleate. Crystal Structure of Co(II) Maleate Trihydrate

• Autorzy: Pajtasova M.
• Języki publikacji: EN

Abstrakty

EN

The crystal and molecular structure of Co(II) maleate trihydrate, Co(C4H2O4)_3H2O, was determined by direct method and Fourier techniques. The structure was refined by full-matrix least-squares methods to a weighted R factor of 0.0263, based on independent reflections. The compound is a three-dimensional coordination polymer with distorted octahedron geometry at each cobalt(II) centre. Each cobalt atom is six-coordinated through two oxygen atoms from water molecules and four oxygen atoms from four different maleate groups. The thermal decompositions of Co(mal)_3H2O, Ni(mal)_3H2O and Cu(mal)_H2O(mal = maleate) have been investigated by means of TG, DTG, DSC and IR spectra. The release of volatile molecules after heating is either a three-step process for Co(mal)_3H2O and Ni(mal)_3H2O or a two-step process for Cu(mal)_H2O.

Słowa kluczowe

EN

hydrates; maleate; transition metal; X-ray analysis; TG; DSC and IR spectra

• Wydawca: Polskie Towarzystwo Chemiczne
• Czasopismo: Polish Journal of Chemistry
• Rocznik: 2001
• Tom: Vol. 75, nr 9
• Strony: 1209--1217

Twórcy

autor

Pajtasova M.

• Department of Chemistry and Technology of Inorganic Materials, Faculty of Industrial Technologies, University of Treneín, T. Vansovej 1054/45, 020 32 Púchov, Slovakia,