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Titolo:
Comparative crystallography. Part 6. Crystal structures, electronic properties and structural pathways of thirty [Cu(bipy)(2)X][Y] complexes, where X= Cl-, Br- or I-
Autore:
OSullivan, C; Murphy, G; Murphy, B; Hathaway, B;
Indirizzi:
Natl Univ Ireland Univ Coll Cork, Dept Chem, Cork, Ireland Natl Univ Ireland Univ Coll Cork Cork Ireland Dept Chem, Cork, Ireland
Titolo Testata:
JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS
fascicolo: 11, , anno: 1999,
pagine: 1835 - 1844
SICI:
0300-9246(19990607):11<1835:CCP6CS>2.0.ZU;2-L
Fonte:
ISI
Lingua:
ENG
Soggetto:
PHEN EQUALS 1,10-PHENANTHROLINE; COPPER(II) COMPLEXES; PERCHLORATE; TETRAFLUOROBORATE; STEREOCHEMISTRY; POLYHEDRA; CATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
53
Recensione:
Indirizzi per estratti:
Indirizzo: Hathaway, B Natl Univ Ireland Univ Coll Cork, Dept Chem, Cork, Ireland Natl Univ Ireland Univ Coll Cork Cork Ireland Cork, Ireland
Citazione:
C. O'Sullivan et al., "Comparative crystallography. Part 6. Crystal structures, electronic properties and structural pathways of thirty [Cu(bipy)(2)X][Y] complexes, where X= Cl-, Br- or I-", J CHEM S DA, (11), 1999, pp. 1835-1844

Abstract

The crystal structures of ten distortion isomers of the [Cu(bipy)(2)X](+) cation have been determined, where X = Cl- (2), Br- (5) or I- (3), and compared by scatter plot analysis with twenty [Cu(bipy)(2)X]Y complexes of known crystal structure. In the ten new structures two involve a near regular trigonal bipyramidal stereochemistry (tau = 0.94-0.90) and eight show a square based pyramidal distorted trigonal bipyramidal stereochemistry (tau = 0.89-0.49), where tau = (a(8) - a(1))/60 [where a(1) = N(2)-Cu-Cl, a(8) = N(1)-Cu-N(3)]. Scatter plots of the eighteen cation distortion isomers of the [Cu(bipy)(2)Cl[Y] series of complexes suggest that all eighteen complexes lie on a common structural pathway, involving a mixture of the symmetric, C-2, and the asymmetric, non-C-2, in-plane modes of vibration of the CuN4Cl chromophore. The resulting structural pathways are consistent with the direct observation of the effect of the modes of vibration on the stereochemistries of the complexes. A comparison of the trends in the bipy/Cl, Br and I data suggests a size effect of the Br- and I- ligands.

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Documento generato il 09/04/20 alle ore 20:00:11