Isomer distribution in thallium hydrotris(polymethylenepyrazol-1-yl)borates (thallium scorpionates): a multinuclear NMR study

The structure of two thallium scorpionates derived from 3(5),4-trimethylene- and 3(5),4-hexamethylenepyrazole was determined by multinuclear NMR, both in solution and in the solid state. The isomeric distribution is the same in both phases suggesting a kinetic origin. A 1 J( 15N- 205T1) coupling of...

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Bibliographic Details
Published in:Polyhedron 2004-11, Vol.23 (17), p.2985-2991
Main Authors: Claramunt, Rosa M., Santa María, M. Dolores, Elguero, José, Trofimenko, Swiatoslaw
Format: Article
Language:English
Subjects:
CPMAS
NMR
Pyrazolylborates
Thallium
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Summary:The structure of two thallium scorpionates derived from 3(5),4-trimethylene- and 3(5),4-hexamethylenepyrazole was determined by multinuclear NMR, both in solution and in the solid state. The isomeric distribution is the same in both phases suggesting a kinetic origin. A 1 J( 15N- 205T1) coupling of 862 Hz was measured for [ T 1 ( Tp ( 3 , 4 - ( CH 2 ) 6 ) ) ] in the solid state. The structure of two thallium scorpionates derived from 3(5),4-trimethylene- and 3(5),4-hexamethylenepyrazole was determined by multinuclear NMR, both in solution and in the solid state. The isomeric distribution is the same in both phases suggesting a kinetic origin. A 1J( 15N– 205Tl) coupling of 862 Hz was measured for [ Tl ( Tp ( 3 , 4 - ( CH 2 ) 6 ) ) ] in the solid state.
ISSN:0277-5387
DOI:10.1016/j.poly.2004.08.018