Table 2:
Important IR spectral bands (cm-1)a of the macrocyclic complexes.
No |
Compound |
νOH |
νNH |
Amide bands |
ν(M-O) |
ν(M-N) |
(NO3-, OAc- , ClO4- ) |
|
|
|
|
I |
II |
III |
(IV) |
|
|
|
1 |
[FeLCl2].½EtOH.½H2O |
3424(vb) |
3176(vb) |
1591(b) |
1514(m) |
1282(w) |
757(s) |
575(w) |
411(m) |
- |
2 |
[CoLCl(OH)].H2O |
3354(b) |
3200(vb) |
1585(b) |
1516(m) |
1286(m) |
758(s) |
500(w) |
425(w) |
- |
3 |
[CoLNO3(OH)].1½H2O |
3321(b) |
3200(vb) |
1584(m) |
1518(b) |
1297(m) |
755(s) |
498(w) |
437(m) |
1383(s),1296(b),876(w) |
4 |
[CoL(OAc)OH].½EtOH |
3416(b) |
3 3208(vb) |
1586(b) |
1518(w) |
1281(m) |
757(s) |
508(w) |
434(m) |
1586(vb),1323(w),1166(m), 679(m) |
5 |
[NiLCl.H2O]Cl.H2O.½EtOH |
3322(b) |
3190(w) |
1584(b) |
11522(b) |
1291(b) |
757(s) |
500(m) |
416(m) |
- |
6 |
[NiL(OAc)OH].½EtOH |
3412(b) |
3200(w) |
1575 (b) |
11535(w) |
1288(w) |
757(s) |
524(w) |
418(w) |
1575(b),1330(w),680(m) |
7 |
[CuLCl2].2H2O |
3418(b) |
3192(b) |
1609(m),1584(m) |
1517(s) |
1296(m) |
755(s) |
525(w) |
416(vw) |
- |
8 |
[CuL Br(OH)].½EtOH |
3415(s) |
3216(w) |
1600(m),1573(m) |
1504(s) |
1285(m) |
745(s) |
500(m) |
450(m) |
- |
9 |
[CuL(OH)]NO3.H2O |
3423(b) |
3256(w) |
1572(m) |
1505(s) |
1284(m) |
745(s) |
510(w) |
440(w) |
1370(s),838(m) |
10 |
[CuL(OH)H2O]ClO4.½EtOH |
3429(b) |
3200(vb) |
1608(b) |
1509(b) |
1295(m) |
758(s) |
541(w) |
412(m) |
1114(s),629(s) |
11 |
[PdLClH2O]Cl.2½H2O |
3422(b) |
3208(b) |
1594(b) |
1521(m) |
1277(b) |
759(s) |
519(m) |
410(m) |
- |
a :vb, very broad s, strong; m, medium; w, weak; b, broad; ν, stretching