Abstract
The hydrated title salt, [CoCl(C6H6FN)(C2H8N2)2]Cl2·H2O, comprises of one chloridobis(ethane-1,2-diamine)(4-fluoroaniline)cobalt(III) cation, two chloride counter-anions and a water molecule of crystallization. The CoIIIion has a distorted octahedral environment and is surrounded by four N atoms in the equatorial plane, with a fifth N atom and one Cl−ligand occupying the axial positions. One of the methylene C groups in one of the ethane-1,2-diamine ligands is disordered over two set of sites in a 0.832 (10):0.168 (10) ratio. In the crystal, the complex cation, the two counter-anions and the water molecule of crystallization are linkedviaN—H...Cl, O—H...Cl and C—H...Cl hydrogen bonds, generating rings withR42(8),R21(6),R42(10) andR22(6) graph-set motifs within a three-dimensional network.
Highlights
The hydrated title salt, [CoCl(C6H6FN)(C2H8N2)2]Cl2ÁH2O, comprises of one chloridobis(ethane-1,2-diamine)(4-fluoroaniline)cobalt(III) cation, two chloride counter-anions and a water molecule of crystallization
One of the methylene C groups in one of the ethane-1,2-diamine ligands is disordered over two set of sites in a 0.832 (10):0.168 (10) ratio
The chelate ring Co1/N1/C1/C20/N2 with the minor contribution to the disorder at C20 likewise exhibits a twisted conformation with puckering parameters q2 = 0.149 (5) A, and ’2 = 19 (3)
Summary
As a result of the excellent coordination ability of ligands with N-donating groups, such as simple amines (Mitzi, 1996; Deeth et al, 1984), cyanides (Wu et al, 2003; Shores et al, 2002), or N-heterocyclic rings (Hagrman et al, 1999; Willett et al, 2001), their respective transition-metal complexes have always been an active area in coordination chemistry. Ethylenediamine (en) has been used in innumerable coordination compounds as a ligand (Cullen & Lingafelter, 1970; Daniels et al, 1995; Jameson et al, 1982), because it chelates metal cations by two nitrogen atoms, and donates hydrogen atoms to form N—HÁ Á ÁX hydrogen bonds. In the vast majority of cases, en coordinates to a central metal ion as a bidentate ligand via the two N atoms, forming a five-membered chelate ring. This ligand has been widely used to prepare a number of cobalt(III) complexes (Bailar & Clapp, 1945; Bailar & Rollinson, 1946).
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