> I am interested in knowing if Ti2S exits in hexagonal form. ICSD does not contain hexagonal forms with this stoichiometry, but with different stoichiometry, there are various layered polymorphs eg:
Kusawake, T.;Takahashi, Y.;Wey, M.Y.;Ohshima, K.I. (2001) J. Physics: Condensed Matter 13, 9913-9921 "X-ray structure analysis and electron density distributions of the layered compounds CuxTiS2" http://dx.doi.org/10.1088/0953-8984/13/44/307 Onoda, M.;Wada, H. (1987) J. Less-Common Metals 132, 195-207 "The titanium-sulphur system: structures of Ti6.9 S9 (18H) and Ti8.2 S11 (33R) and the unit cells of 45R and 57R types of titanium sulphide" http://dx.doi.org/10.1016/0022-5088(87)90576-5 And references therein. Early X-ray work may not have got the stoichiometry right. _____________________________________________________________ Dr Alan Hewat, ILL Grenoble, FRANCE <[EMAIL PROTECTED]>fax+33.476.20.76.48 +33.476.20.72.13 (.26 Mme Guillermet) http://www.ill.fr/dif/people/hewat/ _____________________________________________________________
