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

Table 7

Dimensions of the unique hydrogen bonds (distances in Å and angles in °) for complex 2.^†

D^‡–H⋯A^§	D^‡⋯A^§	H⋯A^§	<D^‡HA^§
N(2)–H(2)⋯O(21)	2.905(1)	2.154(1)	155.07(4)
N(12)–H(12)⋯O(1)a	2.914(1)	2.177(1)	159.29(3)
N(22)–H(22)⋯O(11)a	2.908(1)	2.153(1)	153.49(2)
N(1)–H(1)⋯O(31)b	3.081(1)	2.381(1)	151.68(3)
N(11)–H(11)⋯O(32)	3.013(1)	2.234(1)	150.97(2)
N(21)–H(21)⋯O(33)c	3.072(1)	2.386(1)	160.41(5)

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