moisture-stable dibenzo[b,f]gallepins with planarseven-memberedrings have been designed and synthesized. From X-ray single-crystal analyses, the effects of the coordination numbers were evaluated at the gallium atom on the planarity of the seven-memberedrings with a series of the synthesized complexes. Accordingly, it was shown that the seven-memberedring of dibenzogallepin involving a three-coordinated
Preparation and Properties of Fluorenylidene(phenyl)phosphines Bearing Bulky Groups with Electron-Donating Substituents in the Ortho Position on the Phenyl Group
Fluorenylidene(phenyl)phosphines having bulky substituents with an electron-donating group in the o-position on the phenyl group were prepared and their properties were compared. The prepared materials included 2,4-di-t-butyl-6-methoxyphenyl, 2,4-di-t-butyl-6-(phenoxymethyl)phenyl, 2,4-di-t-butyl-6-(dimethylamino)phenyl, or 2,4-di-t-butyl-6-(2-phenylethyl)phenyl. The diphosphenes and dithioxophosphoranes
Preparation and Properties of Stabilized Thioxophosphine Sulfides Bearing the 4-<b><i>t</i></b>-Butyl-2,6-bis(dialkylaminomethyl)phenyl or the 2,4-Di-<b><i>t</i></b>-butyl-6-(dialkylaminomethyl)phenyl Substituents
Stabilized thioxophosphine sulfides bearing the 4-t-butyl-2,6-bis(dialkylaminomethyl)phenyl or the 2,4-di-t-butyl-6-(dialkylaminomethyl)phenyl group, as well as their 15N labeled analogs, were prepared. Intramolecular interaction between the nitrogen and the phosphorus atoms was investigated, mainly by means of 31P NMR and 1H NMR spectroscopic studies.
Ring-Opening Polymerization of a Galla[1]ferrocenophane: A Gallium-Bridged Polyferrocene with Observable Tacticity
作者:Bidraha Bagh、Joe B. Gilroy、Anne Staubitz、Jens Müller
DOI:10.1021/ja910648k
日期:2010.2.17
spontaneous ring-openingpolymerization of a galla[1]ferrocenophane. This organometallic polymer is thermally robust and can be purified and handled under ambient conditions, making it an ideal candidate for incorporation into polymer based materials offering an alternative to existing polyferrocenes. The tBu group pointing toward the polymer backbone serves as a very sensitive NMR probe of the polymer stereochemistry
Preparation and x-ray structure of [2,4-di-t-butyl-6-(N,N-dimethylaminomethyl)phenyl]dithioxophosphorane stabilized by intramolecular coordination
作者:Masaaki Yoshifuji、Kazunori Kamijo、Kozo Toyota
DOI:10.1016/s0040-4039(00)76716-5
日期:1994.6
hioxophosphorane was prepared by the reaction of the corresponding phosphine and elemental sulfur. The structure of the dithioxophosphorane was analyzed by X-ray crystallography, which indicated a strong participation of the nitrogen lone pair in the stabilization of the dithioxophosphoryl group.