A mixed halothallate

Rastogi, R. P. ; Dubey, B. L. ; Pandey, N. K. (1972) A mixed halothallate Journal of Inorganic and Nuclear Chemistry, 34 (3). pp. 831-837. ISSN 0022-1902

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Official URL: http://linkinghub.elsevier.com/retrieve/pii/002219...

Related URL: http://dx.doi.org/10.1016/0022-1902(72)80056-3


The stoichiometry of the reaction between Br2(vapour) and TlCl(solid) has been established. The solid reaction product has been characterised to be Tl(I)[Tl(III)Cl2Br2] by chemical analysis, magnetic measurement, conductivity studies, i.r. and laser Raman spectroscopy. The crystal structure of Tl(I)[Tl(III)Cl2Br2] has been determined by X-ray diffraction method (powder pattern). The crystal lattice belongs to orthorhombic type with ao = 8.513 Å, bo = 6.983 Å, co = 5.880 Å, and cell volume = 349.5 Å3. The unit cell contains 2 molecules of Tl(I)[Tl(III)Cl2Br2]. The pycnometric density, using cyclohexane as displacing liquid, has been found to be 5.544 g/cm3, whereas the X-ray density is 6.078 g/cm3. The kinetics and mechanism of reaction between Br2 vapour and solid thallous chloride has also been investigated.

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