Synthesis, Structure and Spectroscopic Properties of the Dimer μ-Bis[2(1H)-Tetrahydropyrimidinone] Octakis[2(1H)-Tetrahydropyrimidinone] Dicopper(II) Perchlorate

Autor:	H. Langfelderová, I. Kováčik, Yu. V. Yablokov, L. V. Mosina, J. Kožišek, Violeta K. Voronkova, J. Hanušík
Rok vydání:	1992
Předmět:	Ligand Stereochemistry Dimer Crystal structure Triclinic crystal system chemistry.chemical_compound Perchlorate Crystallography chemistry Octahedron X-ray crystallography Materials Chemistry Molecule Physical and Theoretical Chemistry
Zdroj:	Journal of Coordination Chemistry. 26:45-57
ISSN:	1029-0389 0095-8972
DOI:	10.1080/00958979209407910
Popis:	The complex μ-Bis[2(1H)-tetrahydropyrimidinone]octakis[2(1H)-tetrahydropyrimidinone]dicopper(II) perchlorate has been synthesized and its crystal structure has been determined by X-ray diffraction at room temperature. Crystals are triclinic (space group p); a=11.709(8), b = 12.750(12), c=12.891(11)A, α = 62.98(7), β=67.90(6), γ = 71.75(7)[ddot], R = 0.0675 and R w = 0.0743. The unit cell contains one centro-symmetric, dimeric cation, [Cu2(PU)10]4+, and four non-coordinated CIO- − anions. The nearest environment of the Cu(II) atom consists of a distorted octahedron of oxygen atoms from molecules of the organic ligands. Neglecting the displacement of the Cu-Ot bonds from the equatorial plane of each Cu(II) polyhedron, this complex represents an example of a dimer built from octahedral fragments with parallel planes of equatorial ligands; one of the equatorial ligands of each Cu(II) atom is simultaneously an axial ligand for another. From EPR measurements, the compound belongs to a class for which t...
Databáze:	OpenAIRE
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