Vibrational study of some alkylamine hydrochlorides

The i.r. spectra of some solid amine hydrochlorides are studied. The bands originating from strong hydrogen bonds between the physically adsorbed molecules and either the bromide of the polycrystalline KBr, the chloride, or other hydrochloride molecules are tentatively assigned and discussed. © 1981.The wnters are indebted to Prof J. BELLANATO for useful suggestions and discussion.Peer Reviewe

Halogenated heteroanionic strontrium apatites

Some halogenated derivatives of arsenate and vanadate-strontium apatites are studied by i.r. spectroscopy. The results seem to support the ionic migration mechanism suggested elsewhere. © 1982.The authors thank C. SIGÚENZA and T. GONZÁLEZ-CORTÉS for useful discussions.Peer Reviewe

Infrared spectra of arsenate and vanadate strontium apatites

The i.r. spectra of some phosphate-arsenate strontium apatites and phosphate-vanadate strontium apatites have been studied and the assignments of their bands realized. It is shown that the symmetry of the distinct anions depends on the apatitic composition and it is suggested the existence of a mechanism of continuous anion migration throughout the apatite lattice. © 1982.Peer Reviewe