ISSN:
0044-2313
Keywords:
Irondiiodide complexes
;
irontriiodide complexes
;
tetramethylurea
;
synthesis
;
crystal structure
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
Complexes of FeI2 and FeI3 with Tetramethylurea[FeI2(OC(NMe2)2)2] (1, [Fe2I4(OC(NMe2)2)2] (2), and [FeI3(OC(NMe2)2] (3) were prepared by the reaction of FeI2 and FeI2/iodine, respectively, with tetramethylurea.The structures of 1 and 3 were determined from single crystal X-ray diffraction data. 1 crystallizes in the triclinic space group P1, with a = 809.9(1), b = 923.2(1), c = 1 374.6(1) pm, α = 106.80(1), β = 90.47(1), γ = 101.55(1)°; Z = 2; R = 0.045., 3: monoclinic, P21/c, a = 1 311.4(1), b = 783.3(1), c = 1 409.1(1) pm, β = 97.36(1)°; Z = 4; R = 0.047.1 and 3 are isolated neutral complexes with distorted tetrahedral coordination of iron. 3 is the first FeI3-complex with an O-donor ligand.The IR-spectra exhibit strong shifts of n̈C = O and n̈asC - N of tetramethylurea especially on coordinating to FeI3.
Notes:
[FeI2(OC(NMe2)2)2] (1), [Fe2I4(OC(NMe2)2)2] (2) und [FeI3(OC(NMe2)2] (3) werden durch Reaktion von FeI2 bzw. FeI2 und Iod mit Tetramethylharnstoff dargestellt.Die Kristallstrukturen von 1 und 3 wurden durch Röntgenbeugung bestimmt. 1 kristallisiert triklin, P1, mit a = 809,9(1), b = 923,2(1), c = 1 374,6(1) pm, α = 106,80(1), β = 90,47(1), γ = 101,55(1)°; Z = 2; R = 0,045. 3: monoklin, P21/c, a = 1 311,4(1), b = 783,3(1), c = 1 409,1(1) pm, β = 97,36(1)°; Z = 4; R = 0,047.1 und 3 enthalten isolierte neutrale Komplexe mit verzerrt tetraedrischer Koordination von Eisen. 3 ist der erste FeI3-Komplex mit einem O-Donorliganden. Die Schwingungsspektren zeigen starke Verschiebungen von n̈C = O und n̈asC - N für Tetramethylharnstoff besonders bei der Koordination an FeI3.
Additional Material:
2 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/zaac.19936190329
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