ISSN:
0009-2940
Keywords:
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
Crystal and Molecular Structures of Halogeno(2-diethylaminoethanolato)copper(II)-Complexes(Halogen: Chlorine or Bromine)Chloro(2-diethylaminoethanolato)copper(II) crystallizes in the enantiomorphic space groups P41212 or P43212 of the tetragonal system with sixteen formula units in a cell of dimension a = b = 11.342 (4) Å, and c = 27.861 (11) Å. The tetrameric clusters of the molecules have the cuban type molecular structure with Cu-Cu-separations of 2.937 (2) Å, (mean value), 3.426 (2) Å, and 3.459 (2) Å. The magnetic susceptibility measurements χ = f(T) over the range 54-300 K have been given. - In opposition to this, the structure of Bromo(2-diethyl-aminoethanolato)copper(II) is centrosymmetric dimeric with Cu—Cu-separations of 3.033 (5)4) Å. Here, the lattice dimensions are a = 8.946 (9) Å, b = 12.188 (12) Å, c = 8.576 (9) Å, β = 102.45 (18)° space group P21/n. - Both structures has been determined by single crystal X-ray diffraction data and refined to conventional R values of 5.75% for 1333 observed reflections and 7.5 % for 1449 observed reflections, respectively.
Notes:
Chloro(2-diäthylaminoäthanolato)kupfer(II) kristallisiert in den enantiomorphen Raum-gruppen P41212 oder P43212 mit den Gitterdimensionen a = b = - 11.342 (4) Å und c = 27.861 (11) Å. Das tetramere Molekül stellt mit Cu-Cu-Abstanden von 2.937 (2) Å (Mittelwert), 3.426 (2) Å und 3.459 (2) Å ein neues Beispiel für eine Struktur vom Kuban-Typ dar. Die magnetischen Messungen χ = f(T) für 54-300 K werden mitgeteilt. - Bromo(2-diäthyl-aminoäthanolato)kupfer(II) bildet dagegen im Kristall ein zentrosymmetrisch-dimeres Mole-kül mit einem Cu-Cu-Abstand von 3.033 (5) Å. aus4). Die Gitterdimensionen sind a = 8.946 (9) Å, b = 12.188 (12) Å, c = 8.576 (9) Å, β = 102.45 (18)Å; Raumgruppe P21/n. - Beide Strukturen wurden aus Einkristall-Röntgenbeugungsdaten ermittelt. Die R-Werte betragen 5.7% für 1333 beobachtete Reflexe bzw. 7.5% für 1449 beobachtete Reflexe.
Additional Material:
7 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19731061006
