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Carbon‐13 and mercury‐199 nuclear spin relaxation study on solution dynamics of the bis(phenylethynyl)mercury molecule and shielding anisotropy of its acetyleniccarbon and mercury nuclei
Author(s) -
GryffKeller Adam,
Molchanov Sergey
Publication year - 2000
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/(sici)1097-458x(200001)38:1<17::aid-mrc603>3.0.co;2-v
Subject(s) - chemistry , mercury (programming language) , anisotropy , electromagnetic shielding , molecule , relaxation (psychology) , nuclear magnetic resonance , spin–lattice relaxation , chemical physics , analytical chemistry (journal) , organic chemistry , physics , nuclear quadrupole resonance , quantum mechanics , computer science , programming language , psychology , social psychology
Carbon‐13 longitudinal relaxation times and nuclear Overhauser effect enhancement factors at two magnetic fields and three temperatures were measured for a DMSO solution of bis(phenylethynyl)mercury and interpreted in terms of molecular mobility of the solute molecule. The problem of the effective C— H bond length, crucial for the quantitative treatment of the relaxation data, was especially addressed. Then, using relaxation data for acetylenic carbons and additionally measured longitudinal relaxation times of mercury‐199, the shielding anisotropy parameters for these nuclei were calculated. Copyright © 2000 John Wiley & Sons, Ltd.