Dimethylsulfoxid‐Komplexe von Beryllium(II)‐chlorid. Kristallstrukturen von [Be(OSMe2)4]Cl2, [Be(OSMe2)3(H2O)]Cl2 und [Be(OSMe2)2(H2O)2]Cl2 |
| |
Authors: | Bernhard Neumüller Wolfgang Petz Kurt Dehnicke Prof. Dr. |
| |
Affiliation: | Marburg, Fachbereich Chemie der Philipps‐Universit?t |
| |
Abstract: | Dimethylsulfoxide Complexes of Beryllium(II) Chloride. Crystal Structures of [Be(OSMe2)4]Cl2, [Be(OSMe2)3(H2O)]Cl2 and [Be(OSMe2)2(H2O)2]Cl2 Single crystals of the mixed ligand complexes [Be(OSMe2)3(H2O)]Cl2 ( 2 ) and [Be(OSMe2)2(H2O)2]Cl2 ( 3 ) were obtained from saturated solutions of [Be(OSMe2)4]Cl2 ( 1 ) in acetonitrile and dichloromethane, respectively, in the presence of traces of water, while single crystals of 1 were available by reaction of the carbodiphosphorane complex [BeCl2{C(PPh3)2}] with DMSO/toluene solution. All complexes are characterized by X‐ray diffraction and IR spectroscopy. 1 : Space group Pbca, Z = 8, lattice dimensions at 193 K: a = 962.4(1), b = 1888.8(2), c = 2115.8(2) pm, R1 = 0.0344. 1 consists of [Be(OSMe2)4]2+ cations with distorted tetrahedral coordination of the oxygen atoms of the DMSO molecules with Be–O distances of 161.9 pm on average, and chloride ions. 2 : Space group , Z = 2, lattice dimensions at 193 K: a = 903.9(2), b = 925.2(3), c = 1121.3(3) pm, α = 93.65(3)°, β = 108.03(3)°, γ = 115.20(3)°, R1 = 0.0472. 3 : Space group , Z = 2, lattice dimensions at 173 K: a = 788.2(2), b = 801.6(2), c = 1070.7(3) pm, α = 86.66(2)°, β = 83.80(2)°, γ = 71.00(2)°, R1 = 0.0699. 2 and 3 also form dications with distorted tetrahedral coordination of the Be2+ ions by the oxygen atoms of DMSO and water molecules, respectively. The chloride ions are associated by strong hydrogen bonds O–H···Cl to give three‐dimensional networks. |
| |
Keywords: | Beryllium Dimethylsulfoxide Complexes |
|
|