caa a22 4500 469059354 CHVBK 20180323132852.0 cr unu---uuuuu 170328e19920501xx s 000 0 eng 10.1007/BF01076671 doi (NATIONALLICENCE)springer-10.1007/BF01076671 Order-disorder effects of small guests in clathrates studied by nuclear quadrupole resonance and crystallography. Part I. Carbon tetrachloride and related molecules in Ni(SCN)2(3-methylpyridine)4 [Elektronische Daten] [Li Pang, Edwin Lucken, Gérald Bernardinelli] NQR spectroscopy and X-ray crystallography have been jointly applied to the study of the small guest molecules CH2Cl2, CHCl3, CCl4, CBr2Cl2, C(CH3)2Cl2 etc. in the Werner host complex Ni(SCN)2(3-methylpyridine)4. Specific host-guest dipole-dipole interactions play an important role in order-disorder effects for guest molecules in the cavities of orthorhombic system,Fddd. Thus a weakly polar molecule such as CBr2Cl2 exhibits a disordered alternation, both the bromine and the chlorine atoms occupying the two possible sites in theC 2 cavity, whereas for the polar molecule C(CH3)2Cl2, an ordered structure is observed. In addition, two new types of crystal structures,C2/c andP $$\bar 1$$ , are reported here for dichloromethane and chloroform clathrates. Kluwer Academic Publishers, 1992 NQR nationallicence chloromethanes nationallicence structure nationallicence Pang Li Départment de chimie physique and Laboratoire de Cristallographie aux Rayons X, Université de Genève, 30, Quai E. Ansermet, 1211, Genève 4, Switzerland aut Lucken Edwin Départment de chimie physique and Laboratoire de Cristallographie aux Rayons X, Université de Genève, 30, Quai E. Ansermet, 1211, Genève 4, Switzerland aut Bernardinelli Gérald Départment de chimie physique and Laboratoire de Cristallographie aux Rayons X, Université de Genève, 30, Quai E. Ansermet, 1211, Genève 4, Switzerland aut Journal of inclusion phenomena and molecular recognition in chemistry Kluwer Academic Publishers 13/1(1992-05-01), 63-76 0923-0750 13:1<63 1992 13 10847 https://doi.org/10.1007/BF01076671 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01076671 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Pang Li Départment de chimie physique and Laboratoire de Cristallographie aux Rayons X, Université de Genève, 30, Quai E. Ansermet, 1211, Genève 4, Switzerland aut NATIONALLICENCE 700 1- Lucken Edwin Départment de chimie physique and Laboratoire de Cristallographie aux Rayons X, Université de Genève, 30, Quai E. Ansermet, 1211, Genève 4, Switzerland aut NATIONALLICENCE 700 1- Bernardinelli Gérald Départment de chimie physique and Laboratoire de Cristallographie aux Rayons X, Université de Genève, 30, Quai E. Ansermet, 1211, Genève 4, Switzerland aut NATIONALLICENCE 773 0- Journal of inclusion phenomena and molecular recognition in chemistry Kluwer Academic Publishers 13/1(1992-05-01), 63-76 0923-0750 13:1<63 1992 13 10847 Metadata rights reserved Springer special CC-BY-NC licence nationallicence SWISSBIB 214155056 BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer