Lyssenko KA, Antipin MY, Antonov DY. The transannular interaction in [2.2]paracyclophane: repulsive or attractive?
Chemphyschem 2003;
4:817-23. [PMID:
12961978 DOI:
10.1002/cphc.200200597]
[Citation(s) in RCA: 61] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The molecular structure and charge density distribution in the crystal of [2.2]paracyclophane derived from the high-resolution single crystal X-ray diffraction data at 100 K is reported together with ab initio calculations of this molecule. Analysis of the atomic, anisotropic displacement parameters in a "rigid-body" model approximation has revealed that the molecule is ordered in the crystal. Topological analysis of the electron density and potential-energy density-distribution functions has demonstrated that there is no "through-space" interaction between the rings in the molecule. The role of the ethylene bridges and distortion of the aromatic desks on the inter-ring interaction are discussed.
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