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Relaxation of platinum‐195 in tetracyanoplatinate(II) and hexacyanoplatinate(IV) in aqueous solutions
Author(s) -
Wasylishen Roderick E.,
Britten James F.
Publication year - 1988
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/mrc.1260261208
Subject(s) - chemistry , aqueous solution , platinum , anisotropy , spin–lattice relaxation , relaxation (psychology) , ion , inorganic chemistry , nuclear magnetic resonance , organic chemistry , psychology , social psychology , physics , quantum mechanics , nuclear quadrupole resonance , catalysis
The mechanism of 195 Pt spin–lattice relaxation in aqueous solutions of Pt(CN) 4 2− and 6 2− has been elucidated from variable‐temperature T 1 measurements at 4.70 and 8.48 T. For Pt(CN) 4 2− both the chemical shielding anisotropy and spin rotation mechanisms are important; for Pt(CN) 6 2− the spin rotation mechanism completely dominates. The value of Δσ obtained for Pt(CN) 4 2− is 2350 ppm, which is in excellent agreement with the value previously measured for the tetracyanoplatinate(II) ion in a variety of salts in the solid state.