1250975-49-5Relevant academic research and scientific papers
N-Methylimidazole complexes of beryllium: [Be(Me-Im)4]I 2and [Be3(μ-OH)3(Me-Im)6]Cl 3
Neumueller, Bernhard,Dehnicke, Kurt
, p. 1516 - 1521 (2010)
Tetra(N-methylimidazole)-beryllium-di-iodide, [Be(MeIm)4]I 2 (1), was prepared from beryllium powder and iodine in Nmethylimidazole suspension to give yellow single crystal plates, which were characterized by X-ray diffraction and IR spectroscopy. Compound 1 crystallizes tetragonally in the space group IA2d with, four formula units per unit cell. Lattice dimensions at 100(2) K: a = b = 1784.9(1), c = 696.2(1) pm, R 1 = 0.0238. The structure consists of homoleptic dications [Be(Me-Im)4]2+ with short Be-N distances of 170.3(3) pm and iodide ions with weak interionic C-H...I contacts. Experiments to yield crystalline products from reactions of N-methylimidazole with BeCl2 and (Ph4P)2[Be2Cle], respectively, in dichloromethane solutions were unsuccessful. However, single crystals of [Be3(μ-OH)3(Me-Im)6]Cl3 (2) were obtained from these solutions in the presence of moisture air. According to X-ray diffraction studies, two different crystal individuals (2a and 2b) result, depending on the starting materials BeCl2 and (Ph 4P)2[Be2Cl6], respectively [2a: Space group P21/n, Z=4; 2b: Space group P1, Z = 2], As a side-product from, the reaction, of N-methylimidazole with (Ph4P)2[Be 2Cl6 single crystals of (Ph4P)Cl·- CH2Cl2 (3) were identified crystallographically (P2 1/n, Z = 4) which are isotypical with the corresponding known bromide (Ph4P)Br·CH2Cl2.
