The title compound, [Fe(C(5)H(5))(C(8)H(13)N)]Br, is isotypic with the analogous chloride compound. The Fe-C bond lengths are in the range 2.020 (6)-2.048 (7) Å. In the crystal, the cations and bromide anions are connected by N(+)-H⋯Br(-) hydrogen bonds.

The title complex, [Fe(2)O(SO(4))(2)(C(12)H(8)N(2))(4)]·8H(2)O, contains two unique Fe(III) cations, one oxide anion, four 1,10-phenanthroline (phen) ligands, two coordinated sulfate anions and eight lattice water mol-ecules. Each Fe(III) ion has an approximate octa-hedral geometry, coordinated by four N atoms from two phen mol-ecules, two O atoms from oxide and sulfate anions, respectively. Th...

We report the observation of symmetric fission in doubly charged Fe-S cluster anions, [Fe(4)S(4)X(4)](2-)-->2[Fe(2)S(2)X(2)](-) (X=Cl,Br), owing to both Coulomb repulsion and antiferromagnetic coupling. Photoelectron spectroscopy shows that both the parent and the fission fragments have similar electronic structures and confirms the inverted energy schemes due to the strong spin polarization of...

Investigations were carried out on the carbon-dots (C-dots) based fluorescent off - on (Fe(3 + )- S2O3(2-)) and on - off (Zn(2 + )- PO4(3-)) sensors for the detection of metal ions and anions. The sensor system exhibits excellent selectivity and sensitivity towards the detection of biologically important Fe(3 + ), Zn(2 + ) metal ions and S2O3(2-), PO4(3-) anions. It was found that the functiona...

In the title polymeric complex, [Fe{OS(CH3)2}2{Ag(CN)2}2], the FeII cation is located at an inversion centre and is coordinated by four cyanide (CN-) anions and two dimethyl sulfoxide mol-ecules in a slightly compressed N4O2 octa-hedral geometry, the AgI cation is C-coordinated by two CN- anions in a nearly linear geometry. The CN- anions bridge the FeII and AgI cations to form a two-dimensiona...

Safflorite, a naturally occurring cobalt-nickel-iron diarsenide (Co,Ni,Fe)As(2), possesses the marcasite-type structure, with cations (M = Co + Ni + Fe) at site symmetry 2/m and As anions at m. The MAs(6) octa-hedra share two edges, forming chains parallel to c. The chemical formula for safflorite should be expressed as (Co,Ni,Fe)As(2), rather than the end-member format CoAs(2), as its structur...

In the [Fe(4,4'-bit)(3)](2+) (4,4'-bit is 4,4'-bi-1,3-thia-zole) cation of the title compound, [Fe(C(6)H(4)N(2)S(2))(3)][FeBr(4)]Br, the Fe(II) atom (3 symmetry) is six-coordinated in a distorted octa-hedral geometry by six N atoms from three 4,4'-bit ligands. In the [FeBr(4)](-) anion, the Fe(III) atom (3 symmetry) is four-coordinated in a distorted tetra-hedral geometry. In the crystal, inter...

The asymmetric unit of the title compound, [Fe(C(3)H(4)N(2))(6)]SO(4)·2C(3)H(4)N(2), contains two complex cations, two sulfate anions and four imidazole mol-ecules. In both cations, the Fe(II) atom is coordinated by six monodentate imidazole ligands and exhibits a slightly distorted octa-hedral coordination geometry. The Fe-N distances [2.184 (4)-2.218 (4) Å] point to a high-spin state of the F...

In the title compound, [Fe(C(5)H(5))(C(6)H(16)P(2))(CO)](C(12)H(13)BOP), the Fe(II) ion adopts a three-legged piano-stool geometry, with Fe⋯Cg = 1.721 (5)Å (Cg = the centroid defined by the C atoms of the cyclo-penta-dienyl ring). The 1,2-bis-(dimethyl-phosphino)ethane (dmpe) ligand chelates to form a five-membered C(2)P(2)Fe ring which is in a pseudo-half-chair conformation. In the crystal str...

In the title compound, [Fe(NCS)2(C8H6N4S2)2] n , the Fe(II) cation is coordinated by two terminal N-bonded thio-cyanate anions and four bridging N:N'-bridging dipyrazin-2-yl di-sulfide ligands in an octa-hedral geometry. The Fe(II) cations are connected via bridging 4,4'-di-pyrazine ligands into chains along the b-axis direction. The asymmetric unit consists of one Fe(II) cation located on posi...