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• W2098591769 abstract "Abstract Single crystals of [Be 3 (μ 3 ‐O) 3 (MeCN) 6 {Be(MeCN) 3 } 3 ](I) 6 ·4CH 3 CN ( 1 ·4CH 3 CN) were obtained in low yield by the reaction of beryllium powder with iodine in acetonitrile suspension, which probably result from traces of beryllium oxide containing the applied beryllium metal. The compound 1 ·4CH 3 CN forms moisture sensitive, colourless crystal needles, which were characterized by IR spectroscopy and X‐ray diffraction (Space group Pnma , Z = 4, lattice dimensions at 100(2) K: a = 2317.4(1), b = 2491.4(1), c = 1190.6(1) pm, R 1 = 0.0315). The hexaiodide complex cation 1 6+ consists of a cyclo ‐Be 3 O 3 core with slightly distorted chair conformation, stabilized by coordination of two acetonitrile ligands at each of the beryllium atoms and by a {Be(CH 3 CN) 3 } 2+ cation at each of the oxygen atoms. This unique coordination behaviour results in coplanar OBe 3 units with short Be–O distances of 155.0 pm and 153.6 pm on average of bond lengths within the cyclo ‐Be 3 O 3 unit and of the peripheric BeO bonds, respectively. Exposure of compound 1 ·4CH 3 CN to moist air leads to small orange crystal plates of [Be(H 2 O) 4 ]I 2 ·2CH 3 CN ( 3 ·2CH 3 CN). According to the crystal structure determination (Space group C 2/ c , Z = 4, lattice dimensions at 100(2) K: a = 1220.7(1), b = 735.0(1), c = 1608.5(1) pm, β = 97.97(1)°, R 1 = 0.0394), all hydrogen atoms of the dication [Be(H 2 O) 4 ] 2+ are involved to form O–H ··· N and O–H ··· I hydrogen bonds with the acetonitrile molecules and the iodide ions, respectively. Quantum chemical calculations (B3LYP/6‐311+G**) at the model [Be 3 (μ 3 ‐O) 3 (HCN) 6 {Be(HCN) 3 } 3 ] 6+ show that chair and boat conformation are stable and that the distorted chair conformation is stabilized by packing effects." @default.
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• W2098591769 date "2010-11-25" @default.
• W2098591769 modified "2023-10-17" @default.
• W2098591769 title "[Be3(μ3-O)3(MeCN)6{Be(MeCN)3}3](I)6 - ein Berylliumkomplex mit Cyclo-(Be3O3)-Kern und sein Hydrolyseprodukt [Be(H2O)4](I)2·2MeCN. [Be3(μ3-O)3(MeCN)6{Be(MeCN)3}3](I)6 - a Beryllium Complex with Cyclo-(Be3O3) Core and its Product of Hydrolysis [Be(H2O)4](I)" @default.
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• W2098591769 doi "https://doi.org/10.1002/zaac.201000360" @default.
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