ISSN:
1573-1111
Keywords:
Inclusion complex
;
layer structure
;
hydrogen bonding, urea
;
tetraethylammonium salt
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract The title ternary complexes (1, X=Cl;2, X=Br;3, X=CN) have been prepared and characterized by X-ray crystallography. Crystal data: space groupP21/n,Z=4;1,a=7.505(2),b=14.556(4),c=14.453(3) Å, β=98.13(2)o, andR F=0.088 for 1831 observed MoK α data;2,a=7.483(1),b=14.643(6),c=14.443 Å, β=98.25(2)o, andR F=0.113 for 923 data;3,a=7.490(2),b=14.646(5),c=14.594(5) Å, β=98.85(5)o, andR F=0.082 for 915 data. In the isomorphous crystal structure of1 and2, ordered (C2H5)4N+ cations are sandwiched between puckered layers matching the (020) family of planes, each being constructed from the cross-linking of planar zigzag chains of hydrogen-bonded urea molecules by the water molecules and halide ions. Compound3 has the same structure except that its cyanide group is disordered.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00660745
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