Amine-rich silver complexes of rac-trans-1,2-diaminocyclohexane

Zeitschrift fur Naturforschung - Section B Journal of Chemical Sciences

Volumn 65, Issue 10, 2010, Pages 1249-1257

  Wölper, Christoph ^a   Ibáñez, Sara Durán ^a   Jones, Peter G ^a  

^a TECHNICAL UNIVERSITY OF BRAUNSCHWEIG   (Germany)

Author keywords

Amines; Chiral ligands; Hydrogen bonds; Silver

Indexed keywords

AMINES; CHLORINE COMPOUNDS; COMPLEXATION; CRYSTALLOGRAPHY; HYDROGEN BONDS; LIGANDS; SILVER; STEREOCHEMISTRY;

CHIRAL LIGAND; CHLORIDE ANIONS; ETHANOLIC SOLUTION; HYDROPHILIC AND HYDROPHOBIC; LAYER STRUCTURES; MONODENTATE LIGANDS; SILVER COMPLEXES; TWOFOLD SYMMETRY;

SILVER COMPOUNDS;

EID: 77958194569     PISSN: 09320776     EISSN: None     Source Type: Journal    
DOI: 10.1515/znb-2010-1012     Document Type: Article

References (11)

1. C. Wölper, M.D. Polo Bastardés, I. Dix, D. Kratzert, P.G. Jones, Z. Naturforsch. 2010, 65b, 647-673.
2. C. Wölper, V. Lozano, E.-M. Zerbe, P.G. Jones, Z. Naturforsch. 2010, 65b, in preparation.
3. E.-M. Zerbe, Dissertation, Technische Universität Braunschweig, Papierflieger Verlag, Clausthal-Zellerfeld, 2006.
4. I. Kalf, M. Braun, Y. Wang, U. Englert, CrystEng Comm 2006, 8, 916 - 922;
5. one structure was taken for comparison purposes from H.-L. Zhu, X.-M. Zhang, G.-F. Liu, D.-Q. Wang, Z. Anorg. Allg. Chem. 2003, 629, 1059-1062.
6. In contrast to the liquid racemate (m. p.14 - 15 °C) the enantiomerically pure diamine is a solid at room temperature (various m. p. ca. 40 °C are quoted by suppliers) and therefore unsuitable for use as a solvent without special precautions.
7. Of the various types of hydrogen bond observed in this study, 32 N-H⋯O interactions displayed H⋯O distances of 2.20 - 2.63 (av. 2.39) Å , whereas for ten O- H⋯N interactions the H⋯N distances lay in the range 1.97-2.13 (av. 2.07) Å. It should however be pointed out that the former type had no clear upper distance limit, and the decision as to which contacts correspond to "genuine" hydrogen bonds was arbitrary in some cases. Other types were too infrequent to form a meaningful average value.
8. A total of nine amine and (especially) diamine hydrates were structurally investigated: S. Janeda, D. Mootz, Z. Naturforsch. 1998, 53b, 1197 - 1202;
9. ibid. 1999, 54b, 103-108. In several cases a hydrogen-bonded water substructure was observed, but this is not the case for 4.
10. G.M. Sheldrick, SHELXL-97, Program for the Refinement of Crystal Structures, Universität Göttingen, Göttingen (Germany) 1997.
11. See also: G.M. Sheldrick, Acta Crystallogr. 2008, A64, 112-122.