TY - JOUR
T1 - The 2-imino-1, 3-selenazolidine group bonded to phosphorus and silicon
T2 - A multinuclear magnetic resonance study
AU - Bakhmutova, Ekaterina V.
AU - Cruz, Alejandro
AU - Ramirez-Trejo, Raúl
AU - Contreras, Rosalinda
AU - Wrackmeyer, Bernd
PY - 2001
Y1 - 2001
N2 - A tris(imino)phosphane (3), its sulfide [3(S)1, an iminodiphenylphosphane (4), and an iminotrimethylsilane (5), in all of which the imino group belongs to a pseudo-ephedrine-derived 2-imino-1, 3-selenazolidine ring, were prepared and studied by multinuclear magnetic resonance (1H, 13C, 15N, 29Si, 31P, 77Se NMR). By application of various 1D and 2D NMR techniques, NMR parameters such as the isotope induced chemical shifts 1Δ14/15N(31P) for 4, 1Δ14/15N(29Si) for 5, numerous coupling constants and chemical shifts could be obtained. The absolute sign of 1J(29Si, 15N) (>0) was determined for 5. The largest values so far for 3J(77Se, 31P) (198.0 Hz in 3 and 194.0 Hz in 4) were observed, and the absolute sign of these coupling constants 3J(77Se, 31F) > 0 was determined, together with the signs of various other coupling constants involving 77Se or 31P.
AB - A tris(imino)phosphane (3), its sulfide [3(S)1, an iminodiphenylphosphane (4), and an iminotrimethylsilane (5), in all of which the imino group belongs to a pseudo-ephedrine-derived 2-imino-1, 3-selenazolidine ring, were prepared and studied by multinuclear magnetic resonance (1H, 13C, 15N, 29Si, 31P, 77Se NMR). By application of various 1D and 2D NMR techniques, NMR parameters such as the isotope induced chemical shifts 1Δ14/15N(31P) for 4, 1Δ14/15N(29Si) for 5, numerous coupling constants and chemical shifts could be obtained. The absolute sign of 1J(29Si, 15N) (>0) was determined for 5. The largest values so far for 3J(77Se, 31P) (198.0 Hz in 3 and 194.0 Hz in 4) were observed, and the absolute sign of these coupling constants 3J(77Se, 31F) > 0 was determined, together with the signs of various other coupling constants involving 77Se or 31P.
KW - C NMR, N NMR, Si NMR, P NMR, Se NMR
KW - Coupling signs, phosphanes
KW - H NMR
KW - Iminophosphanes
KW - NMR
KW - Silanes
UR - http://www.scopus.com/inward/record.url?scp=0037593208&partnerID=8YFLogxK
U2 - 10.1002/mrc.948
DO - 10.1002/mrc.948
M3 - Artículo
SN - 0749-1581
VL - 39
SP - 739
EP - 745
JO - Magnetic Resonance in Chemistry
JF - Magnetic Resonance in Chemistry
IS - 12
ER -