Ontology highlight
ABSTRACT:
SUBMITTER: Clark TE
PROVIDER: S-EPMC2723774 | biostudies-literature | 2009
REPOSITORIES: biostudies-literature
Crystal growth & design 20090101 8
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 the solid state using X-ray diffraction, or as the precursor phosphate esters or a cesium salt. The cone conformation ethyl phosphate ester for the octadecyl compound crystallizes in a bi-layer 39.1 A thick which approaches the 40 A of biological membranes. The 1,3-alternate cone c ...[more]