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Main Title: Metallkomplexe mit Guanidinderivaten als Liganden: Kristallstrukturen von [Zn(cnge)2(SCN)2] · 2H2O und Zn(eoge)Br2 (enge = Cyanoguanidin; eoge = 1-Ethoxyiminomethylguanidin)
Translated Title: Metal Complexes with Guanidine Derivatives as Ligands: Crystal Structures of [Zn(enge)2(SCN)2]·2H2O and Zn(eoge)Br2 (enge = Cyanoguanidine; eoge = 1-Ethoxyiminomethylguanidine)
Author(s): Pickardt, Joachim
Kühn, Britta
Type: Article
Language Code: de
Abstract: Crystals of |Zn(cnge)2(SCN)2]-2H2O (1) were obtained by evaporation of an aqueous solution of Z n(SO4)·7H2O , KSCN, and cyanoguanidine. Crystals of Zn(eoge)Br2 (2) were obtained by reaction of ZnBr2 and cyanoguanidine in ethanol/water. Both compounds are monoclinic, space group C2/c, 1: Z = 4, a = 1919.6(7), b = 467.3(2), c = 1838.5(6) pm, β = 112.99(3)°, 2: Z = 8, a = 1799.5(6), b = 878.7(2), c = 1367.2(5) pm, β = 101.52(3)°. In 1 each Zn is bonded to two cyanoguanidine molecules and via the N atoms to two NCS groups. Intermolecular hydrogen bonds lead to chains along the a-axis, and these chains are again connected via hydrogen bonds to the two crystal water molecules. In the course of the formation of 2, the cyanoguanidine reacted with the ethanol to form 1-ethoxyiminomethylguanidine. This ligand forms chelate rings with the Zn atoms, which are tetrahedrally coordinated by the two imino N atoms of the ligand and by two bromine atoms.
Issue Date: 1996
Date Available: 10-Nov-2018
DDC Class: 540 Chemie und zugeordnete Wissenschaften
Subject(s): cyanoguanidine
zinc complexes
crystal structures
Journal Title: Zeitschrift für Naturforschung B
Publisher: De Gruyter
Publisher Place: Berlin
Volume: 51
Issue: 10
Publisher DOI: 10.1515/znb-1996-1018
Page Start: 1469
Page End: 1472
EISSN: 1865-7117
ISSN: 0932-0776
Appears in Collections:Inst. Chemie » Publications

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