Table 4.
Key IR bands (cm−1) of DABAAPTS and CAAPTS and their Cu2+ complexes.
Compounds | ν(NH) | ν(C=N) | ν(C=S) + ν(C=N) | δ(NCS) + CS | ν(N−N) | ν(C=S) | ν(Cu−N)/ |
+ ν(C−N) | bending | ν(Cu−S) | |||||
| |||||||
DABAAPTS | 3360 s | 1600 vs | 1310 s | 1115 | 1050 m | 830 s | — |
3330 m | — | 1290 s | 1095 | — | 730 s | — | |
CuCl2(DABAAPTS)H2O | 3362 s | 1572 vs | 1365 m | 1165 | 1065 m | 782 m | 410 m |
3320 m | — | 1340 m | 1132 | — | 710 m | 305 w | |
CuBr2(DABAAPTS)H2O | 3360 s | 1570 s | 1370 m | 1172 | 1068 m | 775 m | 415 m |
3335 m | — | 1330 m | 1130 | — | 710 m | 300 w | |
Cu(NO3)2(DABAAPTS)H2O | 3360 s | 1575 s | 1365 m | 1160 | 1062 m | 770 m | 415 m |
3332 m | — | 1342 m | 1142 | — | 705 m | 302 w | |
Cu(NCS)2(DABAAPTS)H2O | 3362 s | 1565 vs | 1372 s | 1165 | 1060 m | 775 m | 400 m |
3330 m | — | 1345 m | 1130 | — | 722 m | 305 w | |
Cu(OAc)2(DABAAPTS)H2O | 3365 s | 1565 s | 1370 s | 1162 | 1065 m | 770 m | 410 m |
3335 m | — | 1340 m | 1135 | — | 715 m | 310 w | |
CAAPTS | 3315 s | 1605 vs | 1320 s | 1125 | 1060 m | 840 m | — |
3200 m | — | 1295 s | 1090 | — | 770 m | — | |
CuCl2(CAAPTS)H2O | 3320 s | 1555 s | 1370 m | 1180 | 1070 m | 790 m | 415 m |
3205 m | — | 1330 m | 1140 | — | 755 m | 302 w | |
CuBr2(CAAPTS)H2O | 3315 s | 1565 vs | 1365 s | 1175 | 1068 m | 795 m | 410 m |
3202 m | — | 1325 m | 1135 | — | 750 m | 335 w | |
Cu(NO3)2(CAAPTS)H2O | 3315 s | 1572 s | 1375 s | 1170 | 1072 m | 792 m | 402 m |
3205 m | — | 1335 m | 1130 | — | 745 m | 305 w | |
Cu(NCS)2(CAAPTS)H2O | 3312 s | 1570 s | 1360 m | 1172 | 1075 m | 780 m | 415 m |
3200 m | — | 1330 m | 1125 | — | 748 m | 300 w | |
Cu(OAc)2(CAAPTS)H2O | 3315 s | 1570 s | 1355 m | 1170 | 1070 m | 795 m | 408 m |
3205 m | — | 1320 m | 1130 | — | 750 m | 303 w |