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18 citations found for Nagai, T
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organic compounds
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The crystal of benzophenone crown ether acetal, C19H22O4, with an 11-membered ring has two crystallographically independent molecules in the unit cell. The bond lengths and angles in the ring moiety are similar to those of analogous crown ethers. The 11-membered rings are greatly twisted to adopt planar-chiral structures and the unit cell contains two sets of enantiomers.
research papers (organic compounds)
organic compounds
The 14-membered ring of 2,2-diphenyl-1,3,6,9,12-pentaoxacyclotetradecane, C21H26O5, is distorted far from a rectangular structure. By contrast, the homologous 17-membered ring of 2,2-diphenyl-1,3,6,9,12,15-hexaoxacycloheptadecane, C23H30O6, with an additional oxyethylene unit, adopts an approximately rectangular structure and the cavity has an unsymmetric shape.
research papers (organic compounds)
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At 11.0 GPa the diamond-type structure changes in the high-pressure phase with an increse in coordination numbers, and prolonged bonding distances make the magnitudes of ![[sigma]](http://scripts.iucr.org/logos/entities/sigma_rmgif.gif)
(2) larger.
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