ISSN:
0044-2313
Keywords:
YIII
;
SmIII
;
GdIII
;
benzyl
;
complexes
;
synthesis
;
crystal structure
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
New Benzyl Complexes of the Lanthanides. Synthesis and Crystal Structures of [(C5Me5)2Y(CH2C6H5)(thf)], [(C5Me5)2Sm(CH2C6H5)2K(thf)2]∞, and [(C5Me5)Gd(CH2C6H5)2(thf)]YBr3 reacts with potassium benzyl and [K(C5Me5)] in THF to give KBr and the monobenzyl compound [(C5Me5)2 · Y(CH2C6H5)(thf)] 1. The analogous reaction with SmBr3 in THF leads to the polymeric product [(C5Me5)2Sm(CH2C6H5)2 ∞ K(thf)2]∞ 2, with GdBr3 to [(C5Me5)Gd(CH2C6H5)2(thf)] 3.The structures of 1-3 were determined by X-ray single crystal structure analysis: 1:Space group P1, Z = 2, a = 851.2(4) pm, b = 952.7(4) pm, c = 1858.6(8) pm, α = 79.90(4)°, β = 77.35(4)°, γ = 73.30(3)°.2:Space group P1, Z = 2, a = 903.3(2) pm, b = 1375.9(3) pm, c = 1801.1(4) pm, α = 100.92(3)°, β = 100.77°, γ = 98.25(3)°.3:Space group P21/n, Z = 8, a = 1458.2(5) pm, b = 927.8(3) pm, c = 3792.9(15) pm, β = 96.83(3)°.
Notes:
YBr3 reagiert in Gegenwart von K(C5Me5) mit Kaliumbenzyl in THF unter Abspaltung von KBr zu der Monobenzylverbindung [(C5Me5)2Y(CH2C6H5)(thf)] 1. Die entsprechende Umsetzung mit SmBr3 führt in THF zu der polymeren Verbindung [(C5Me5)2Sm(CH2C6H5)2K(thf)2]∞ 2, mit GdBr3 zu [(C5Me5)Gd(CH2C6H5)2(thf)] 3. Die Strukturen von 1-3 wurden jeweils durch Anfertigen einer Einkristallstrukturanalyse geklärt: 1: Raumgruppe P1, Z = 2, a = 851,2(4) pm, b = 952,7(4) pm, c = 1858,6(8) pm, α = 79,90(4)°, β = 77,35(4)°, γ = 73,30(3)°.2: Raumgruppe P1, Z = 2, a = 903,3(2) pm, b = 1375,9(3) pm, c = 1801,1(4) pm, α = 100,92(3)°, β = 100,77°, γ = 98,25(3)°.3: Raumgruppe P21/n, Z = 8, a = 1458,2(5) pm, b = 927,8(3) pm, c = 3792,9(15) pm, β = 96,83(3)°.
Additional Material:
7 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/zaac.19966221117
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