The preparation and the crystal structure of the beta(brown) form of TiCl3 have been re-examined. Accurate X-ray diffraction measurements on crystallographically pure samples, free from Al, allowed refinement of the structure originally proposed by the Natta school in 1958, and in particular to fix the x coordinate of the chlorine atoms in the unit cell. The X-ray characterization of products with composition (beta-TiCl3 + 1/3AlCl3) gave no indication of the existence (suggested in the literature) of solid solutions beta-TiCl3 . (AlCl3)0.33 analogous to those known for the violet modifications.
A Reinvestigation of Beta-ticl3 .1. Preparation and Structural Characterization / Auriemma, Finizia; Busico, Vincenzo; P., Corradini; Trifuoggi, Marco. - In: EUROPEAN POLYMER JOURNAL. - ISSN 0014-3057. - STAMPA. - 28:(1992), pp. 513-518. [10.1016/0014-3057(92)90126-M]
A Reinvestigation of Beta-ticl3 .1. Preparation and Structural Characterization
AURIEMMA, FINIZIA;BUSICO, VINCENZO;TRIFUOGGI, MARCO
1992
Abstract
The preparation and the crystal structure of the beta(brown) form of TiCl3 have been re-examined. Accurate X-ray diffraction measurements on crystallographically pure samples, free from Al, allowed refinement of the structure originally proposed by the Natta school in 1958, and in particular to fix the x coordinate of the chlorine atoms in the unit cell. The X-ray characterization of products with composition (beta-TiCl3 + 1/3AlCl3) gave no indication of the existence (suggested in the literature) of solid solutions beta-TiCl3 . (AlCl3)0.33 analogous to those known for the violet modifications.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
