ISSN:
0044-2313
Keywords:
Titanium(III)
;
Chromium(III)
;
Iron(III)
;
Mono-, Dinuclear Fluoro Complexes
;
Synthesis
;
Crystal Structure
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
Mono- and Dinuclear Fluoro Complexes of Titanium (III), Chromium (III), and Iron(III). Syntheses and Structures of (NMe4) (Ti(H2O)4F2)TiF6 · H2O, (NMe4)3Cr2F9, and (NMe4)3Fe2F9The title compounds have been prepared by reaction of MCl3 (M = Ti, Cr, Fe) with NMe4F in dimethylformamide. (NMe4)3Cr2F9 and (NMe4)3Fe2F9 contain the face-sharing biocathedral M2F93- unit. The M…M distances are 277.1(1) and 289.8(3) pm in (NMe4)3Cr2F9 and (NMe4)Fe2F9, respectively. (NMe4)(Ti(H2O)4F2)TiF6 · H2O contains trans-TiIII(H2O)4F2+ cations and TiIVF62- anions. Crystal data: (NMe4)3Cr2F9: hexagonal, space group P63/m, a = 804.1(3), c = 1857.5(4) pm, Z = 2, 529 reflections, R = 0.049; (NMe4)3Fe2F9: hexagonal, space group P63/m, a = 804.7(5), c = 1 861.6(5) pm, Z = 2, 635 reflections, R = 0,046; (NMe4)(Ti(H2O)4F2)TiF6 · H2O: orthorhombic, space group Pbca, a = 776.9(2), b = 1 616.3(3), c = 2 428.6(7) pm, Z = 8, 2 784 reflections, R = 0,056.
Notes:
Die Titelverbindungen werden durch Reaktion der Metallchloride MCl3 (M = Ti, Cr, Fe) mit Tetramethylammoniumfluorid in DMF dargestellt. (NMe4)3Cr2F9 und (NMe4)3Fe2F9 enthalten flächenverknüpfte bioktaedrische M2F93--Gruppen. Der M…M-Abstand beträgt in Cr2F93- 277,1(1) und in Fe2F93- 289,8(3) pm.(NMe4)(Ti(H2O)4F2)TiF6 · H2O enthält trans-TiIII(H2O)4F2+-Kationen und TiIVF62--Anionen. Kristalldaten: (NMe4)3Cr2F9: hexagonal, Raumgruppe P63/m, a = 804,1(3), c = 1857,5(4) pm, Z = 2, 529 Reflexe, R = 0,049; (NMe4)3Fe2F9: hexagonal, Raumgruppe P63/m, a = 804,7(5), c = 1861,6(5) pm, Z = 2, 635 Reflexe, R = 0,046; (NMe4)(Ti(H2O)4F2)TiF6 · H2O: orthorhombisch, Raumgruppe Pbca, a = 776,9(2), b = 1616,3(3), c = 2428,6(7) pm, Z = 8, 2 784 Reflexe, R = 0,056.
Additional Material:
3 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/zaac.19915930109
