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