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Digitale Medien

1H and 13C nuclear magnetic resonance of phenyldibenzophosphole and derivatives: Complete assignment using two-dimensional J-resolved and shift correlation methods (1987)

Nelson, John H. ; Affandi, Salina ; Gray, George A. ; [weitere]

Chichester : Wiley-Blackwell

Organic Magnetic Resonance 25 (1987), S. 774-779

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ISSN: 0749-1581

Schlagwort(e): 1H and 13C NMR ; Phenyldibenzophospholes ; assignment, computer simulation ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Notizen: Proton and 13C NMR parameters have been determined for phenyldibenzophosphole and its oxide, sulfide, selenide and W(CO)5 complex from high-resolution one- and two-dimensional (COSY, HETCOR and 2DJ) experiments at 4.7, 7.1 and 9.4 tesla. Assignments of chemical shifts and coupling constants have been made and verified by computer simulation of the proton spectra. The data are discussed in relation to the geometry and electron density at phosphorus and the diamagnetic anisotropy of the W(CO)5 group.

Zusätzliches Material: 4 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/mrc.1260250908

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Digitale Medien

13C and 15N nuclear magnetic resonance studies of selected tetrazoles: Relationships with the chemistry of tetrazoles (1986)

Nelson, John H. ; Takach, Nicholas E. ; Henry, Ronald A. ; [weitere]

Chichester : Wiley-Blackwell

Organic Magnetic Resonance 24 (1986), S. 984-994

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ISSN: 0749-1581

Schlagwort(e): 13C NMR ; 15N NMR ; Sodium tetrazolates ; tetrazoles ; bitetrazoles ; cobalt(III)tetrazole complexes ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Notizen: Natural abundance 13C and 15N nuclear magnetic resonance studies have been carried out on a series of sodium tetrazolate salts, 1,5- and 2,5-disubstituted tetrazoles, bitetrazoles, and cobalt(III) tetrazolate complexes of the type (PBu3n)Co(DH)2(5-R-tetrazolate), where DH is the monoanion of dimethylglyoxime. The 15N chemical shifts have been analysed with respect to structure, substituent effects, electron density as determined by molecular orbital calculations, Brønsted acidity, Lewis basicity and nucleophilicity of the nitrogen atoms in the ambidentate tetrazoles.

Zusätzliches Material: 3 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/mrc.1260241111

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