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(B15c5)BiI3(I2): Molecular Benzo-15-Crown-5―BiI3 Complexes Bridged by Iodine Molecules to Chains
Department für Chemie, Universität zu Köln, Greinstraße 6, D-50939 Köln, Germany
Fakultät für Chemie, Ruhr-Universität Bochum, D-44780 Bochum, Germany
* Author to whom correspondence should be addressed.
Received: 23 August 2011; in revised form: 8 October 2011 / Accepted: 21 October 2011 / Published: 24 October 2011
Abstract: The reaction of bismuth triiodide with iodine and benzo-15-crown-5 in ethanol/dichloromethane yielded red single crystals of (b15c5)BiI3(I2) (monoclinic, P21/c (no. 14), a = 1376.9(1), b = 1172.7(1), c = 1700.2(2) pm, b = 115.197(6), V = 2484.1(4)·106 pm3, Z = 4). Neutral pseudo-octahedral complexes (b15c5)BiI3 are connected by secondary bonding interactions via iodine molecules to chains. Electronic structure calculations of the neutral complex (b15c5)BiI3 reveal that the compound can indeed be described as b15c5 interacting with a molecular BiI3 unit. However, bonding has to be mainly electrostatic as the interactions of the bismuth 6s lone pair with the 2p orbitals of the oxygen atoms of the crown ether are clearly antibonding.
Keywords: bismuth; iodine; crown ether; crystal structure; chemical bonding
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Fiolka, C.; Richter, M.; Pantenburg, I.; Mudring, A.-V.; Meyer, G. (B15c5)BiI3(I2): Molecular Benzo-15-Crown-5―BiI3 Complexes Bridged by Iodine Molecules to Chains. Crystals 2011, 1, 220-228.
Fiolka C, Richter M, Pantenburg I, Mudring A-V, Meyer G. (B15c5)BiI3(I2): Molecular Benzo-15-Crown-5―BiI3 Complexes Bridged by Iodine Molecules to Chains. Crystals. 2011; 1(4):220-228.
Fiolka, Christoph; Richter, Mark; Pantenburg, Ingo; Mudring, Anja-Verena; Meyer, Gerd. 2011. "(B15c5)BiI3(I2): Molecular Benzo-15-Crown-5―BiI3 Complexes Bridged by Iodine Molecules to Chains." Crystals 1, no. 4: 220-228.