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Article: Recent findings in crystallography described by researchers from University of Western Australia.
- Article from:
- Journal of Technology
- Article date:
- September 1, 2009
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"Lower rim O-methyl, -n-butyl, and n-octadecyl calix[4]arenes bearing p-phosphonic acid groups on the upper rim have been prepared in high yield, compounds 12-14. Where possible, the compounds have been characterized in (lie solid state using X-ray diffraction, or as the precursor phosphate esters of a cesium salt," researchers in Crawley, Australia report.
"The cone conformation ethyl phosphate ester for the octadecyl compound crystallizes in a bilayer 39.1 angstrom thick, which approaches the 40 angstrom of biological membranes. The 1,3-alternate cone conformation of the cesium salt of the O-methyl phosphonic acid has a metal ion coordinated to two methoxy ...