Hydrogen bond studies. XVI. The crystal structure of chloride trihydrate

Adsorption and ionization of HCl on an ice surface

“…However, the direct assignment of the lower hydrate to the tetrahydrate by comparison to the infrared spectra in the literature is clearly unsatisfactory given the uncertainty that exists and further clarification is required. Furthermore, there is at present no spectrum in the literature attributed to the trihydrate for comparison although it is known to exist from x-ray diffraction data 24 and from the HCl.H 2 O phase relationship. 10 In fact, the phase diagram predicts the formation of the trihydrate under the conditions employed here.…”

“…There also remains an uncertainty in their assignment of the crystalline dihydrate ͑previously assigned as the crystalline trihydrate͒ and the absence of a spectrum associated with the trihydrate ͑amorphous or crystalline͒ that is known to exist from x-ray crystallography. 24 No x-ray diffraction data detailing the crystal structure of the tetrahydrate of HCl has been found from an extensive search of the literature and the UK crystallographic structure database, although the bromine analogue, HBr.4H 2 O is known to exist. 25 The spectra assigned by Gilbert and Sheppard to HBr.4H 2 O and HCl.4H 2 O are significantly different from each other, in contrast to the other analogous hydrates in the homologous series.…”

Hydrate der Hexachloroantimon(V)säure. Kristallstruktur des Trihydrats HSbCl6.3H2O mit dem Kation H14O6 2+

“…3H20 illustriert strukturelle Aspekte dieser Uberlegung. (Lundgren & Olovsson, 1967b), noch isolierte Ionen der Art HTO ~" (Mootz & Fayos, 1970; oder HsO~.H20 (Fig. 2).…”

Crystal structure of tetraphenylphosphonium diaquaoxonium dichloride dichloromethane solvate, [P(C6H5)4H7O3)] · CH2Cl2

“…The structure is not isotypic with that of P(C6H 5 + )4H5C>2 + 2Cr · H2O [3], The Η7θ3 + ions are comparable to those in other compounds with this ion [e.g. [4][5][6][7].…”