THE 31P NMR SPECTRA OF ISOMERIC DIAMINOHEXA-CHLOROCYCLOTETRAPHOSPHAZATETRAENES; EXAMPLES OF A2B2 AND AA'BB' SPIN SYSTEMS |
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| Authors: | S. S. Krishnamurthy K. Ramachandran A. C. Sau M. N. Sudheendra Rao A. R. Vasudeva Murthy R. Keat |
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| Affiliation: | 1. Department of Inorganic and Physical Chemistry , Indian Institute of Science , Bangalore, 560012, India;2. Department of Chemistry , University of Glasgow , Glasgow, G12 8QQ, UK |
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| Abstract: | Abstract The 31P nmr spectra of 2,4- and 2,6-diamino-derivatives of octachlorocyclotetraphosphazatetraene, N4P4Cl6(NR1R2)2 (R1 = H, R2 = But; R1 = H, R2 = CH2Ph; R1 = Me, R2 = Ph), have been measured. The 2,4- and 2,6-isomers were analysed as AA'BB' and A2B2 spin systems respectively. In the 2,4-isomers the spin-spin couplings 2J(PNP) and 4J(PNPNP) were of opposite sign. |
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| Keywords: | Lawesson's reagent N,N′-diaryl glycinamide 1,3-diaryl-1,3,2-diazaphospholidin-4-thione-2-sulfide cyclization herbicidal activity |
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