Abstract
Crystals of the title salt, [Na(C6H14O 3)2]2(C26H20), were grown from a tetrahydrofuran/diglyme/Et2O solvent mixture [diglyme is 1-methoxy-2-(2-methoxyethoxy)ethane]. The cations and dianion are separated in the crystal structure, unlike in the other three structurally characterized dialkali metal tetraphenylethylene 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 bondlength 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.
Original language | English (US) |
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Pages (from-to) | m249-m250 |
Journal | Acta Crystallographica Section E: Structure Reports Online |
Volume | 70 |
Issue number | 7 |
DOIs | |
State | Published - Jul 2014 |
Keywords
- Data-to-parameter ratio = 21.4
- Mean-(C-C) = 0.003 Å
- R factor = 0.048
- Single-crystal X-ray study
- T = 123 K
- WR factor = 0.115