Direct observations of  1  J ( 11 B,  14 N) coupling constants by  11 B NMR spectroscopy | Zendy

Ouassas Abdeljalil | Zendy; Duplan JeanClaude | Zendy; Fenet Bernard | Zendy; Frange Bernard | Zendy

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Direct observations of 1 J ( 11 B, 14 N) coupling constants by 11 B NMR spectroscopy

Author(s) -

Ouassas Abdeljalil,

Duplan JeanClaude,

Fenet Bernard,

Frange Bernard

Publication year - 1990

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.1260280807

Subject(s) - chemistry , analytical chemistry (journal) , coupling constant , nmr spectra database , nuclear magnetic resonance spectroscopy , spectral line , spectroscopy , crystallography , stereochemistry , physics , particle physics , chromatography , astronomy , quantum mechanics

The reaction B(NCS) 4 − + BX 4 − (X = F, Cl, Br) leads to mixed BX n (NCS) 4− n −( n = 1, 2, 3) species easily detected in solution by 11 B NMR. Further, with X = Cl, 1 J ( 11 B, 14 N) values could be measured from the 11 B NMR spectra (25.6, 24.5 and 21.4 Hz for n = 3, 2 and 1, respectively). For X = F, the relevant 1 J ( 11 B, 14 N) values (24.3, 25.2 and 28 Hz for n = 3, 2 and 1, respectively) increase in the same order as the related 1 J ( 11 B, 19 F) (5.5, 12.7 and 20.0 Hz, respectively). No such 1 J ( 11 B, 14 N) could be resolved for X = Br.

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