Use of13C NMR, $$J_{13_C 15_N }$$ and Autor: Ioffe, S. L., Kalinin, A. V., Khasapov, B. N., Stepanyants, A. U., Tartakovskii, V. A. Zdroj: Russian Chemical Bulletin; May 1978, Vol. 27 Issue: 5 p1009-1012, 4p Abstrakt: Conclusions 1.The general criteria for the structure analysis of the heteroorganic derivatives of alkanenitronic acids by the13C NMR method were established.2.The pyridine complexes of the boric esters of nitronic acids exist as the trans isomers.3.The 1,3 (O, O)-transfer of the B(C2H5)2·C5H5N fragment in (CH3O2C)CH=N(O)OBEt2· C5H5N was observed, as well as the 1,5 (O, O)-transfer of the Si(CH3)3 group in C(NO2)2 =N(O)OSiMe3, and it was found that the two NO2 groups in C(CH3)(NO2)=N(O)OSi(CH3)3 are nonequivalent. Databáze: Supplemental Index Externí odkaz: