ISSN:
0749-1581
Keywords:
Boron-nitrogen compounds
;
15N NMR
;
Two-dimensional inverse 1H{15N} experiments
;
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Two types of proton-detected 1H—15N correlation experiments were compared with respect to the observation of 15N NMR resonances broadened by scalar relaxation of the second kind. Both single- and multiple-quantum experiments gave equal 15N line widths in F1, and in all cases the inverse experiments provided a dramatic increase in sensitivity and spectrometer time-saving compared with the direct observation of 15N resonances. Various aminoboranes [B(NHMe)3; B(NHNMe2)3; 2,3-dihydro-2-methyl-2-boraperimidine; organo-substituted 2,5-dihydro-1,2,5-azasilaboroles; organo-substituted 7,8-benzo-1-oxa-6-aza-2-sila-5-bora-3-cyclooctene], organo-substituted 2,5-dihydro-1,2,5-azasilaboratolates, an amine-borane adduct (organo-substituted 7,8-benzo-6-oxa-1-aza-2-sila-5-borabicyclo[3.3.0]oct-3-ene), and (ligand)transition metal π-complexes of organo-substituted 2,5-dihydro-1,2,5-azasilaboroles were studied by two-dimensional inverse 1H{15N} NMR experiments. The straightforward application to the analysis of several mixtures suggests that this technique is promising for the investigation of oligomerization and polymerization of boron - nitrogen compounds.
Additional Material:
3 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/mrc.1260300507
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