Hydrogen-Bonded Networks Based on Cobalt(II), Nickel(II), and Zinc(II) Complexes of N,N'-Diethylurea

Table 8

Dimensions of the unique hydrogen bonds (distances in Å and angles in °) for complex 3.^†

D^‡–H⋯A^§	D^‡⋯A^§	H⋯A^§	<D^‡HA^§
N(1)–H(1)⋯O(11)	2.886(1)	2.055(1)	156.94(5)
N(11)–H(11)⋯O(21)a	2.892(1)	2.082(1)	155.01(5)
N(21)–H(21)⋯O(1)a	2.890(2)	2.091(1)	154.16(6)
N(2)–H(2)⋯O(31)	3.097(1)	2.343(1)	159.73(6)
N(12)–H(12)⋯O(33)b	3.077(2)	2.390(1)	156.88(5)
N(22)–H(22)⋯O(32)c	3.038(1)	2.369(1)	144.26(5)

^†Symmetry transformation used to generate equivalent atoms: a −𝑥, −𝑦, −𝑧; b 𝑥, 𝑦, 1+𝑧; c 1−𝑥, 1−𝑦, −𝑧.
^‡D = donor atom.
^§A = acceptor atom.