Crystal structure of tetra-aqua-(5,5'-dimethyl-2,2'-bipyridyl-?(2) N,N')iron(II) sulfate.

ABSTRACT: In the title compound, [Fe(C12H12N2)(H2O)4]SO4, the central Fe(II) ion is coordinated by two N atoms from the 5,5'-dimethyl-2,2'-bi-pyridine ligand and four water O atoms in a distorted octa-hedral geometry. The Fe-O coordination bond lengths vary from 2.080?(3) to 2.110?(3)?Å, while the two Fe-N coordination bonds have practically identical lengths [2.175?(3) and 2.177?(3)?Å]. The chelating N-Fe-N angle of 75.6?(1)° shows the largest deviation from an ideal octa-hedral geometry; the other coordination angles deviate from ideal values by 0.1?(1) to 9.1?(1)°. O-H?O hydrogen bonding between the four aqua ligands of the cationic complex and four O-atom acceptors of the anion leads to the formation of layers parallel to the ab plane. Neighbouring layers further inter-act by means of C-H?O and ?-? inter-actions involving the laterally positioned bi-pyridine rings. The perpen-dicular distance between ?-? inter-acting rings is 3.365?(2)?Å, with a centroid-centroid distance of 3.702?(3)?Å.

SUBMITTER: Belamri Y 

PROVIDER: S-EPMC4257445 | biostudies-other | 2014 Dec

REPOSITORIES: biostudies-other