Hydrogen-Bonded Networks Based on Cobalt(II), Nickel(II), and Zinc(II) Complexes of N,N'-Diethylurea
Table 10
Most characteristic and diagnostic IR fundamentals (cm-1) for DEU and complexes 1–4.a
Assignments
DEU
1
2
3
4
ν(NH)
3342 sb
3332 sb
3332 sb
3328 sb
3340 sb
ν(CH)
2973 s, 2932 m,
2976 s, 2934 m,
2972 s, 2934 m,
2976 m, 2934 w,
2972 s, 2932 m,
2874 m
2878 m
2876 w
2876 w
2876 w
ν(NH)
1625 vs
1576 vs
1570 vs
1570 vs
1582 vs
ν(CO)
1586 vs
1626 vs
1628 vs
1636 vs
1624 vs
(NH)
1540 m sh
1454 m
1452 w
1450 m
1456 w
(NH) + ν
1259 m
1338 m
1338 w
1334 w
1334 w
pellets.
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