A. LeBail, J.L. Fourquet: Crystal structure and thermal behaviour of H2Ti3O7: a new defective ramsdellite form from Li(+)/H(+) exchange on Li2Ti3O7.
Ramsdellite is not a sheet structure, but consists of blocks of hydrogen-bonded TiO6 octahedra. So maybe a similar hydrogen-bonded Kassite-type sheet structure is a more likely starting point. See Ian Grey's 2003 paper (and maybe ask him to help, but he would need a diffraction pattern, lattice constants etc).
Grey, I.E.; Mumme, W.G.; Pekov, I.V.; Pushcharovskii, D.Yu. The crystal structure of chromian Kassite from the Saranovskoye deposit, northern Urals, Russia (2003) American Mineralogist 88, 1331-1335
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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/
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