Crystal structure of bis[N,N-bis(2-hydroxyethyl)glycinato-κ3 O 1,N,O 2]cobalt(II) monohydrate
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چکیده
The title compound, [Co(C6H12O4)2]·H2O, was prepared by mild heating of an aqueous solution. The Co(II) ion has a slightly distorted octahedral coordination environment which is defined by two N atoms occupying the apical position, while the equatorial plane is furnished by two hy-droxy O atoms and two carboxyl-ate O atoms. The four hy-droxy O atoms from two distinct N,N-bis-(2-hy-droxy-eth-yl)glycine (bicH2 (-)) ligands act as hydrogen-bond donors with two carboxyl-ate O atoms as acceptors to form O-H⋯O hydrogen-bonded layers extending parallel to (100). In addition, the guest water mol-ecule acts as both a hydrogen-bond donor and acceptor, so that each Co(bicH2)2 mol-ecule is connected simultaneously to six neighbouring Co(bicH2)2 and two guest water mol-ecules by hydrogen bonding.
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Bis{N-[2-hydroxy-1,1-bis(hydroxymethyl)ethyl]glycinato-κ3 O,N,O′}iron(II)
In the title compound, [Fe(C6H12NO5)2], the Fe(II) ion lies on an inversion center and is coordinated by two N atoms and four O atoms from two tridentate N-[2-hy-droxy-1,1-bis-(hy-droxy-methyl)eth-yl]glycine ligands, forming a slightly distorted octa-hedral coordination environment. In the crystal, O-H⋯O, O-H⋯N and weak C-H⋯O hydrogen bonds link mol-ecules, forming a three-dimensional network.
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