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• Richter, M
• Pantenburg, I
• Mudring, A
• Meyer, G
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• Richter, M
• Pantenburg, I
• Mudring, A
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• Richter, M
• Pantenburg, I
• Mudring, A
• Meyer, G

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Crystals 2011, 1(4), 220-228; doi:10.3390/cryst1040220

Article

(B15c5)BiI₃(I₂): Molecular Benzo-15-Crown-5―BiI₃ Complexes Bridged by Iodine Molecules to Chains

Christoph Fiolka ¹ , Mark Richter ² , Ingo Pantenburg ¹ , Anja-Verena Mudring ²  and Gerd Meyer ^1,*

¹ Department für Chemie, Universität zu Köln, Greinstraße 6, D-50939 Köln, Germany ² 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

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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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