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Titolo:
Synthesis and X-ray structural study of magnesium (1,3-propanediaminetetraacetato)cuprate(II) octahydrate, Mg[Cu(1,3-pdta)] center dot 8H(2)O. Stereochemistry of hexadentate copper(II)-edta-type complexes in relation to the structure of the ligand
Autore:
Rychlewska, U; Radanovic, DD; Jevtovic, VS; Radanovic, DJ;
Indirizzi:
Univ Kragujevac, Fac Sci, Dept Chem, YU-34000 Kragujevac, Serbia, Yugoslavia Univ Kragujevac Kragujevac Serbia Yugoslavia YU-34000 Serbia, Yugoslavia Adam Mickiewicz Univ, Fac Chem, PL-60780 Poznan, Poland Adam Mickiewicz Univ Poznan Poland PL-60780 hem, PL-60780 Poznan, Poland
Titolo Testata:
POLYHEDRON
fascicolo: 1, volume: 19, anno: 2000,
pagine: 1 - 5
SICI:
0277-5387(20000115)19:1<1:SAXSSO>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
CRYSTAL-STRUCTURES; CIRCULAR-DICHROISM; STRAIN ANALYSIS; ION; TRIHYDRATE; ISOMER; EDTA;
Keywords:
copper(II)-edta-type complexes; crystal structures; stereochemistry;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
34
Recensione:
Indirizzi per estratti:
Indirizzo: Radanovic, DJ Univ Kragujevac, Fac Sci, Dept Chem, YU-34000 Kragujevac, Serbia, Yugoslavia Univ Kragujevac Kragujevac Serbia Yugoslavia YU-34000 lavia
Citazione:
U. Rychlewska et al., "Synthesis and X-ray structural study of magnesium (1,3-propanediaminetetraacetato)cuprate(II) octahydrate, Mg[Cu(1,3-pdta)] center dot 8H(2)O. Stereochemistry of hexadentate copper(II)-edta-type complexes in relation to the structure of the ligand", POLYHEDRON, 19(1), 2000, pp. 1-5

Abstract

The hexadentate complex Mg[Cu(1,3-pdta)]. 8H(2)O (1) (where 1,3-pdta represents the 1,3-propanediaminetetraacetate ion) has been prepared and isolated and its structure established by X-ray crystallography. The structure converged to R = 0.030 for 1537 observed reflections. The Cu(II) ion is surrounded by two nitrogen atoms and four oxygen atoms of the ligand, making a tetragonally elongated octahedron (T=0.868). The Mg cation is bonded octahedrally to six water molecules. Both complex ions utilize a two-fold symmetry axis that is present in the crystal. The conformations of the chelate ringswere found to be envelope for the glycinates and skew-boat for the six-membered diamine (T) ring. Comparison of the structures of the hexadentate copper(II)-edta-type complexes shows an expected variation in their stereochemistry, depending on the structure of the ligand. Infrared (carboxylate region) and electronic absorption spectra are also given. (C) 2000 Elsevier Science Ltd All rights reserved.

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Documento generato il 23/09/20 alle ore 05:52:55