| 摘要 |
A compound of general formula (I):in which: R is selected from the group consisting of C-alkyl, C-alkyl and C-alkyl; n and m are each independently an integer of 5 to 6; p is 1; A is -B-(CH)-B-, wherein r is 2 or 4, B is a N(R)1/pQgroup, Ris hydrogen; Qis an anion selected from nitrate and RCOO", wherein Rhas the same meanings as R, with the proviso that, when Qis nitrate, R is not C-alkyl. |
