THE NUCLEAR MAGNETIC RESONANCES OF CARBAZOLE DERIVATIVES
摘要
In this paper, ~1H, ~(13)C nuclear magnetic resonance (NMR) data of 14 carbazolc derivativesand ~(13)C spin-lattice relaxation time of some derivatives are presented. The theoretical ~1HNMR spectra of the carbazole ring protons in the 14 derivatives are calculated to matchthe experimental spectra by NMRCAL program. The effects of the carbazole ring on thechemical shifts of the protons and carbons of the R-group are discussed. The substituenteffects of carbazole ring on the α-H, β-H, α-C, β-C and v-C of the R-group are estimated. Itis found the the ~1J_(CH) of CH_2 bonded to N in the R=--CH_2--R'(R'=C_nH_(2n+1)),--CH_2--O,--CH_2--CH_2--Br and--CH_2--CH=CH_2 derivatives are additive and can be expressed by ~1J_(CH)=8_x+8_y+8_z,where 8_x, 8_y and e_z are respectively the contributions of substituents x, y and z to ~1J_(CH).