The title complex, [Fe(C(15)H(10)ClN(3))(2)](NO(3))(2)·2H(2)O, has a six-coordinate iron(II) center balanced by two nitrate anions. The Fe atom lies on a twofold rotation axis. The complex exhibits an octa-hedral coordination configuration, where the dihedral angle between the two planar tridentate ligands is 92.4 (1)°. The crystal structure involves O-H⋯O hydrogen bonds.

In the title compound, [Fe(2)(C(5)H(5))(2)(C(17)H(24)N(2))](CF(3)COO)(2), the cation possesses a crystallographically imposed inversion centre. The methyl group is disordered over two positions of equal occupancy. The Fe-C bond lengths to the two cyclo-penta-diene rings vary from 2.025 (6) to 2.044 (6) Å. Inter-molecular N-H⋯O and C-H⋯O hydrogen bonds link the cations and anions into a three-di...

A novel ferrocene-containing dianion, Fe(C5H4-CH(CH3)NHCOCH2SO3 – )2 (1), has been prepared. The oxidation potential of the PPh4 salt is +0.35 V (vs. SCE in PhCN), indicating that it is a stronger donor than TTF (tetrathiafulvalene) by +0.03 V. The dianion provided a TTF salt, the structure and physical properties of which are reported. Over the past three decades a growing subject in the field...

In the title compound, [Al(C(8)H(4)F(3)O(2)S)(3)](3)[Fe(C(8)H(4)F(3)O(2)S)(3)], the metal centre is statistically occupied by Al(III) and Fe(III) cations in a 3:1 ratio. The metal centre is within an octa-hedral O(6) donor set defined by three chelating substituted acetoacetonate anions. The ligands are arranged around the periphery of the mol-ecule with a mer geometry of the S atoms.

Treatment of indium trichloride with three equivalents of the cyclopentadienyliron carbonyl anions, [Fe(C O )2(?7-C5H4R)] (R = H, Me) affords the tri-iron indium com plexes [In{Fe(C O )2(//-C5H 4R )},] (R = H. Me) as dark red crystalline materials. Both compounds were characterized by spectroscopic and analytical methods. Infrared spectroscopy indicates that both com plexes are undissociated in...

In the title compound, [Fe(SO(4))(C(10)H(7)N(3)S)(2)(H(2)O)], the Fe(II) cation is sixfold coordinated by four N atoms from two 2-(1,3-thia-zol-4-yl)-1H-benzimidazole ligands, one water O atom and one O atom of the sulfate dianion within a slightly distorted octa-hedral geometry. The cations and anions are connected by N-H⋯O and O-H⋯O hydrogen bonds into layers in the ab plane.

In the title salt, octa-methyl-ferrocenium bromanilate, [Fe(C(9)H(13))(2)](C(6)HBr(2)O(4)), the Fe atom and the bromanilate anion lie on a mirror plane. The octa-methyl-ferrocenium cation adopts an eclipsed conformation. An intra-molecular O-H⋯O hydrogen bond is present in the bromanilate anion. In the crystal, the cations and anions are stacked alternately, forming a one-dimensional columnar s...

The title compound, [Fe(C(10)H(20)O(5))(H(2)O)(2)][Fe(2)(C(4)N(2)S(2))(4)]·2C(10)H(20)O(5), consists of an [Fe(II)(15-crown-5)(H(2)O)(2)](2+) cation, sandwiched between and O-H⋯O hydrogen bonded by two additional 15-crown-5 ether mol-ecules and two independent [Fe(III)(mnt)(2)](-) anions, where 15-crown-5 ether denotes 1,4,7,10,13-penta-oxacyclo-penta-decane and mnt denotes cis-1,2-dicyano-1,2-...

Although the presence of an exogenous anion is a requirement for tight Fe(3+) binding by the bacterial (Neisseria) transferrin nFbp, the identity of the exogenous anion is not specific in vitro. nFbp was reconstituted as a stable iron containing protein by using a number of different exogenous anions [arsenate, citrate, nitrilotriacetate, pyrophosphate, and oxalate (symbolized by X)] in additio...

The title iron complex, [Fe(C21H19N3)2], consists of an FeII atom chelated by two tridentate bis-(imino)-pyridine radical anions in a slightly distorted octa-hedral coordination environment. In the solid state, there are two independent half-mol-ecules in the asymmetric unit, and the complete mol-ecular structure is formed by applying twofold rotation symmetry with the twofold rotation axis pas...