A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
SYNTHESIS AND CRYSTAL-STRUCTURE OF 2 COPPER(II) HALIDE-COMPLEXES WITH TRANS-1,2-CYCLOHEPTANEDIOL
Tekijät: LEHTONEN A, SILLANPAA R
Kustantaja: MUNKSGAARD INT PUBL LTD
Julkaisuvuosi: 1992
Lehti:: Acta Chemica Scandinavica
Tietokannassa oleva lehden nimi: ACTA CHEMICA SCANDINAVICA
Lehden akronyymi: ACTA CHEM SCAND
Vuosikerta: 46
Numero: 3
Aloitussivu: 249
Lopetussivu: 254
Sivujen määrä: 6
ISSN: 0904-213X
DOI: https://doi.org/10.3891/acta.chem.scand.46-0249
Tiivistelmä
The crystal and molecular structures of CuCl2.2t-chpd (1) and CuBr2.2t-chpd (2) (t-chpd = trans-1,2-cycloheptanediol) have been determined from X-ray single-crystal data, and refined to R-values of 0.038 for 2202 reflections and 0.035 for 2024 reflections for 1 and 2, respectively. Both compounds crystallize in the monoclinic space group P2(1)/n with two dimeric [CuX2(t-chpd)]2.2t-chpd units (X = Cl or Br) in a cell. Cell parameters are a = 1531.8(8), b = 778.1(2), c = 1568.2(8) pm and beta = 105.93(4)-degrees for 1 and a = 1521.5(2), b = 808.8(3), c = 1588.5(2) pm and beta = 106.07(1)-degrees for 2. The structures are isomorphous. The copper(II) ions have a square-pyramidal coordination sphere. CuX2(t-chpd) units are linked to dimers through halogen bridges and hydrogen bonds. Dimeric [CuX2(t-chpd)]2 units are polymerised along the b-axis through hydrogen bonding of the diols. The OH hydrogens of the coordinated diol molecule form hydrogen bonds with the oxygen atoms of the uncoordinated diol unit, while the OH hydrogens of the uncoordinated diols form hydrogen bonds with the halide ions.
The crystal and molecular structures of CuCl2.2t-chpd (1) and CuBr2.2t-chpd (2) (t-chpd = trans-1,2-cycloheptanediol) have been determined from X-ray single-crystal data, and refined to R-values of 0.038 for 2202 reflections and 0.035 for 2024 reflections for 1 and 2, respectively. Both compounds crystallize in the monoclinic space group P2(1)/n with two dimeric [CuX2(t-chpd)]2.2t-chpd units (X = Cl or Br) in a cell. Cell parameters are a = 1531.8(8), b = 778.1(2), c = 1568.2(8) pm and beta = 105.93(4)-degrees for 1 and a = 1521.5(2), b = 808.8(3), c = 1588.5(2) pm and beta = 106.07(1)-degrees for 2. The structures are isomorphous. The copper(II) ions have a square-pyramidal coordination sphere. CuX2(t-chpd) units are linked to dimers through halogen bridges and hydrogen bonds. Dimeric [CuX2(t-chpd)]2 units are polymerised along the b-axis through hydrogen bonding of the diols. The OH hydrogens of the coordinated diol molecule form hydrogen bonds with the oxygen atoms of the uncoordinated diol unit, while the OH hydrogens of the uncoordinated diols form hydrogen bonds with the halide ions.
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