Yoshinori Harada

A package compound of a metal atom with a hydrocarbon [4][4][4][4][3](1,2,3,4,5)ferrocenophane

Abstract Perbridged ferrocenes ( 9 and 11 : the title compound) have been synthesized and characterized by spectroscopies and X-ray diffraction, and an interesting rotational disorder has been found by the X-ray crystal analyses of both 9 and 11 .

Steroidal versus non-steroidal forms. Part 1. Conformation of methyl cis-tetrahydro-α- and -β-santoninate

The crystal and molecular structures of methyl cis-tetrahydro-α-(I) and -β-santoninate (II) have been determined in order to elucidate their conformations. X-Ray structure analyses reveal that both compounds have nonsteroidal conformations in the solid state. Furthermore, positive Cotton effects on the c.d. curves given by both compounds indicate the presence of non-steroidal conformations in solution.