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Bis{bis-[1-meth-oxy-2-(2-meth-oxy-eth-oxy)ethane-?(3) O,O',O'']sodium} 1,1,2,2-tetra-phenyl-ethane-1,2-diide.

ABSTRACT: Crystals of the title salt, [Na(C6H14O3)2]2(C26H20), were grown from a tetra-hydro-furan/diglyme/Et2O solvent mixture [diglyme is 1-meth-oxy-2-(2-meth-oxy-eth-oxy)ethane]. The cations and dianion are separated in the crystal structure, unlike in the other three structurally characterized dialkali metal tetra-phenyl-ethyl-ene salts. The asymmetric unit contains one [Na(diglyme)2](+) cation and one half of the [Ph2CCPh2](2-) dianion. The latter lies on a twofold rotation axis. C-C bond-length redistribution displays that excessive electron density of the dianion is predominantly located at the C atoms of a former double bond and at all eight ortho positions. The studied crystal was a twin, with the ratio of two major components being 0.2143?(9):0.7857?(9). The twin operation is a twofold rotation around the a axis.

SUBMITTER: Minyaev ME

PROVIDER: S-EPMC4120578 | biostudies-literature | 2014 Jul

REPOSITORIES: biostudies-literature

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