65 hz 1h 7 14 dd j 1 j 2 8 40 hz 1h 7 10 7 00 m 1h 6 53 bd j 8 40 hz 1h compound 12 compound of formula i in which m is zn r h and r 1 r 2 2 diethylamino ethylthio in the positions 2 3 blue violet powder uv vis dmf u03bb max 347 612 680 1 h nmr dmso d 6 u03b4 ppm 9 28 9 17 m 6h 8 85 s 2h 8 26 8 15 m 6h 3 59 3 52 bt 4h 3 07 3 00 bt 4h 2 79 q j 7 hz 8h 1 20 t j 7 hz 12h compound 13 compound of formula i in which m is zn r h and r 1 r 2 pyridin 3 yl oxy in the positions 2 3 blue violet powder uv vis dmf u03bb max 346 605 671 1 h nmr dmso d 6 u03b4 ppm 9 10 9 32 m 6h 8 77 bs 2h 8 55 d j 1 4 6 hz 2h 8 25 8 18 m 8h 7 87 bd j 2 8 3 2h 7 61 dd j 1 4 6 hz j 2 8 3 2h compound 14 compound of formula i in which m is zn r r 2 h and r 1 2 dimethylamino ethyloxy in the.