Crystal structures of copper(II) nitrate, copper(II) chloride, and copper(II) perchlorate complexes with 2-formylpyridine semicarbazone

Journal Article · Fri May 15 04:00:00 EDT 2009 · Crystallography Reports

DOI:https://doi.org/10.1134/S1063774509030146· OSTI ID:22050833

Chumakov, Yu M ^[1]; Tsapkov, V I ^[2]; Antosyak, B Ya ^[1]; Bairac, N N ^[2]; Bocelli, G ^[3]; Pahontu, E ^[4]; Gulea, A P ^[2]

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1. Academy of Sciences of Moldova, Institute of Applied Physics (Moldova, Republic of)
2. State University of Moldova (Moldova, Republic of)
3. National Research Council (IMEM-CNR), Institute of Materials for Electronics and Magnetism (Italy)
4. University of Medicine and Pharmacy (Romania)

Compounds dinitrato(2-formylpyridinesemicarbazone)copper (I), dichloro(2-formylpyridinesemicarbazone) copper hemihydrate (II), and bis(2-formylpyridinesemicarbazone)copper(2+) perchlorate hydrate (III) are synthesized and their crystal structures are determined. In compounds I-III, the neutral 2-formylpyridine semicarbazone molecule (L) is tridentately attached to the copper atom via the N,N,O set of donor atoms. In compounds I and II, the Cu: L ratio is equal to 1: 1, whereas, in III, it is 1: 2. In complex I, the coordination sphere of the copper atom includes two nitrate ions with different structural functions in addition to the L ligand. The structure is built as a one-dimensional polymer in which the NO{sub 3} bidentate group fulfills a bridging function. The coordination polyhedron of the copper(2+) atom can be considered a distorted tetragonal bipyramid (4 + 1 + 1). Compound II has an ionic structure in which the main element is the [CuLCl{sub 2} . Cu(H{sub 2}O)LCl]{sup +} dimer. In the dimer, the copper atoms are linked via one of the {mu}{sub 2}-bridging chlorine atoms. The coordination polyhedra of the central atoms of the Cu(H{sub 2})LCl and CuLCl{sub 2} complex fragments are tetragonal bipyramid and tetragonal pyramid, respectively. In compound III, the copper atom is octahedrally surrounded by two L ligands in the mer configuration.

• OSTI ID: 22050833
• Journal Information: Crystallography Reports, Journal Name: Crystallography Reports Journal Issue: 3 Vol. 54; ISSN 1063-7745; ISSN CYSTE3
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
COPPER CHLORIDES
COPPER COMPLEXES
COPPER NITRATES
COPPER PERCHLORATES
CRYSTAL STRUCTURE
DIMERS
HYDRATES
LIGANDS