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Thermal analysis, powder diffraction and spectroscopic investigation of the solid phases of 1‐chloro‐2,2‐dimethylpropane
Author(s) -
Buhrmester C.,
Miehe G.,
Ehrenberg H.,
Fuess H.
Publication year - 2006
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.200410528
Subject(s) - crystallography , diffraction , neopentane , chemistry , powder diffraction , phase (matter) , thermal , materials science , thermodynamics , molecule , organic chemistry , physics , optics
By the substitution of one methyl group in Neopentane C(CH 3 ) 4 with a methylchlorid group the globular sphere is expanded in 1‐chloro‐2,2‐dimethylpropane (CH 3 ) 3 C(CH 2 Cl). With the aid of DSC measurements, X‐ray powder diffraction, 1 H NMR and 35 Cl NQR measurements two orientationally disordered (plastic) phases were established. The low temperature structure was solved and a structural model of phase II is proposed. A mechanism to describe the reorientation in the different phases is given as well as a connectivity scheme between the phases is discussed. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)