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2,2,6,6-Tetra-kis(biphenyl-2-yl)-4,4,8,8-tetra-methyl-cyclo-tetra-siloxane.

ABSTRACT: The title compound, [-Si(C(12)H(9))(2)OSi(CH(3))(2)O-](2), was obtained unintentionally as the product of an attempted crystallization of caesium bis-(biphenyl-2,2'-di-yl)fluoro-silicate from dimethyl-formamide. In the crystal, the mol-ecule is located on an inversion center and the siloxane ring adopts a twist-chair conformation with the two dimethyl-substituted Si atoms lying 0.7081 (5) Å out of the plane defined by the two bis-(biphenyl-2-yl)-substituted Si atoms and the four O atoms. In each Si(C(12)H(9))(2) unit, the orientation of one terminal phenyl ring relative to the phenyl-ene ring of the other biphenyl moiety suggests a parallel displaced π-π stacking inter-action [centroid distance = 4.2377 (11) Å and dihedral angle = 15.40 (9)°].

SUBMITTER: Couzijn EP

PROVIDER: S-EPMC2969922 | biostudies-literature |

REPOSITORIES: biostudies-literature

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cyclo-Tetra-kis{?-N'-[(8-oxidoquinolin-7-yl)methyl-idene]isonicotino-hydrazidato}tetra-zinc tetra-hydrate.

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| S-EPMC3379071 | biostudies-literature

2,9,16,23-Tetra-kis(1-methyl-eth-yl)-5,6,11,12,13,14,19,20,25,26,27,28-dodecadehydro-tetra-benzo[a,e,k,o]cyclo-eicosene.

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| S-EPMC3247421 | biostudies-literature

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| S-EPMC3238830 | biostudies-literature

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| S-EPMC2959511 | biostudies-literature

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| S-EPMC2971351 | biostudies-literature

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