Pulsed NMR study of molecular motions and phase transitions in [N(CH3)4]PbX3 (X=Cl, Br, I)

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DC Field	Value	Language
dc.contributor.author	Vijayaraghavan, D.	-
dc.contributor.author	Ramakrishna, J.	-
dc.date.accessioned	2019-05-28T17:36:53Z	-
dc.date.available	2019-05-28T17:36:53Z	-
dc.date.issued	1993-07	-
dc.identifier.citation	Spectrochimica Acta Part A: Molecular Spectroscopy, 1993, Vol. 49. p1121-1129	en_US
dc.identifier.issn	1386-1425	-
dc.identifier.uri	http://hdl.handle.net/2289/7209	-
dc.description	Restricted Access.	en_US
dc.description.abstract	Proton spin—lattice relaxation time (T1) is measured in [N(CH3)4]PbX3 (X=Cl, Br, I) from 300-77 K at 9.75 MHz. All the compounds show discontinuous changes in T1 values (at 256, 270 and 277 K, respectively), indicating phase transitions. Single T1 minimum is observed in all the cases and the T1 variation is explained in terms of [N(CH3)4] and CH3 group dynamics. The activation energy Eα decreases from chloride to iodide (from 4 to 2 kcal/mol). In bromide and iodide, T1 is found to decrease with increase in temperature at higher temperatures, indicating the presence of spin—rotation interaction.	en_US
dc.language.iso	en	en_US
dc.publisher	Elsevier B.V.	en_US
dc.relation.uri	https://doi.org/10.1016/0584-8539(93)80071-H	en_US
dc.rights	1993 Elsevier B.V.	en_US
dc.title	Pulsed NMR study of molecular motions and phase transitions in [N(CH3)4]PbX3 (X=Cl, Br, I)	en_US
dc.type	Article	en_US
Appears in Collections:	Research Papers (SCM)

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