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(μ-Formato-κO:O')bis-[dicarbon-yl(η-cyclo-penta-dien-yl)iron(II)] tetra-fluoridoborate.

ABSTRACT: In the structure of the title compound [Fe(2)(C(5)H(5))(2)(CHO(2))(CO)(4)]BF(4), each Fe(II) atom is coordinated in a pseudo-octa-hedral three-legged piano-stool fashion. The cyclo-penta-dienyl ligand occupies three fac coordination sites while the two carbonyl ligands and formate O atom occupy the remaining three sites.

SUBMITTER: M'thiruaine CM

PROVIDER: S-EPMC3200969 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Dicarbon-yl(?(5)-cyclo-penta-dien-yl)(2,3-di-bromo-propanamine-?N)iron(II) tetra-fluoridoborate.

Project description:The title compound, [Fe(?(5)-C(5)H(5))(NH(2)CH(2)CHBrCH(2)Br)(CO)(2)](BF(4)) contains an Fe(II) cation with a three-legged piano-stool coordination. The NH(2)CH(2)CHBrCH(2)Br ligand contains a chiral carbon atom. The Fe-N bond length is 2.011?(3)?Å and the Fe-Cp centroid distance is 1.7189?(5)?Å. In the crystal, the ions are linked via two N-H?F inter-actions and a weak N-H?Br inter-action.

| S-EPMC3393195 | biostudies-literature

Dicarbon-yl(η-cyclo-penta-dien-yl)bis-(trimethyl-phosphine)molybdenum(II) trifluoro-methane-sulfonate.

Project description:In the title compound, [Mo(C(5)H(5))(CO)(2)(C(3)H(9)P)(2)]CF(3)SO(3), the cationic complex displays a classical four-legged piano-stool square-pyramidal geometry with a trans configuration of the basal ligands around the Mo atom. The cyclo-penta-dienyl (Cp) ligand occupies the apical position of the piano-stool configuration. The average Mo-P bond length of the two trans PMe(3) ligands is 2.474 (5) Å and the Mo-Cp centroid distance is 2.003 (2) Å.

| S-EPMC2959586 | biostudies-literature

trans-Acetyl-dicarbon-yl(η(5)-cyclo-penta-dien-yl)(methyl-diphenyl-phosphane)molybdenum(II).

Project description:The title compound, [Mo(C(5)H(5))(C(2)H(3)O)(C(13)H(13)P)(CO)(2)], was prepared by reaction of [Mo(CH(3))(C(5)H(5))(CO)(3)] with methyl-diphenyl-phosphane. The Mo(II) atom exhibits a four-legged piano-stool coordination geometry with the acetyl and phosphane ligands trans to each other. There are several inter-molecular C-H⋯O hydrogen-bonding inter-actions involving carbonyl and acetyl O atoms as acceptors. A close nearly parallel π-π inter-action between the cyclo-penta-dienyl plane and the phenyl ring of the phosphane ligand is present, with an angle of 6.4 (1)° between the two least-squares planes. The centroid-to-centroid distance between these groups is 3.772 (3) Å, and the closest distance between two atoms of these groups is 3.449 (4) Å. Since each Mo complex is engaged in two of these inter-actions, the complexes form an infinite π-stack coincident with the a axis.

| S-EPMC3435585 | biostudies-literature

μ-Bis(diphenyl-phosphan-yl)borato-κP:P'-bis-[dicarbon-yl(η-cyclo-penta-dien-yl)iron(II)] tetrachloridoferrate(III) chloro-form solvate.

Project description:The title compound, [Fe(2)(C(5)H(5))(2)(C(24)H(22)BP(2))(CO)(4)][FeCl(4)]·CHCl(3), is an oxidation product of CpFe(CO)(2)PPh(2)BH(3). One pair of phenyl rings attached to the two different P atoms are almost parallel, as are the other pair [dihedral angles = 8.7 (5) and 8.9 (5)°]. The planes of the two cyclo-penta-dienyl rings are inclined by 26.8 (7)° with respect to each other. The carbonyl groups at each Fe atom are almost perpendicular [C-Fe-C = 92.6 (6) and 94.3 (5)°].

| S-EPMC2961392 | biostudies-literature

Dicarbon-yl(hexa-methyl-ene-1,3,5,7-tetra-mine-?N(1))(?(5)-penta-methyl-cyclo-penta-dien-yl)iron(II) tetra-fluoridoborate.

Project description:In the title compound, [Fe(C(10)H(15))(C(6)H(12)N(4))(CO)(2)]BF(4), the arrangement around the Fe(II) atom corresponds to a three-legged piano stool. The penta-methyl-cyclo-penta-dienyl (Cp*) ligand occupies three coordination sites, while two CO ligands and one N atom of the hexa-methyl-ene-tetra-mine ligand occupy the remaining coordination sites, completing a pseudo-octahedral geometry. Both the complex cation and the BF(4) (-) anion reside on crystallographic mirror planes. The Fe-N bond length is 2.069?(2) and the Fe-Cp*(centroid) distance is 1.7452?(3)?Å.

| S-EPMC3393194 | biostudies-literature

Di-μ-iodido-bis-[(diethyl ether-κO)(η-1,3-di-tert-butyl-cyclo-penta-dien-yl)ytterbium(II)].

Project description:The half-sandwich title compound, [Yb(2)(C(13)H(21))(2)I(2)(C(4)H(10)O)(2)], crystallizes as a centrosymmetric dimer. The Yb atom is coordinated in a three-legged piano-stool geometry by a cyclo-penta-dienyl ring, two I anions and the O atom of a diethyl ether mol-ecule. The central Yb(2)I(2) core is an approximate square.

| S-EPMC2915154 | biostudies-literature

Redetermination of (acetonitrile-?N)dicarbon-yl(?(5)-cyclo-penta-dien-yl)iron(II) tetra-fluoridoborate.

Project description:The crystal structure of the title compound, [Fe(C(5)H(5))(CH(3)CN)(CO)(2)]BF(4), of which only the coordinates of the non-H atoms of the cation have previously been reported [Fadel et al. (1979 ?). Z. Anorg. Allg. Chem.453, 98-106] has been redetermined. The Fe(II) atom in the complex cation is coordinated by a cyclo-penta-dienyl ring, two carbonyl ligands and an acetonitrile mol-ecule displaying a three-legged piano stool structure. Three of the four F atoms of the BF(4) (-) anion are disordered over two sets of sites, with a site-occupancy factor of 0.709?(10) for the major occupied site.

| S-EPMC3393217 | biostudies-other

Bis(η-penta-methyl-cyclo-penta-dien-yl)cobalt(II).

Project description:The crystal structure of the title compound, deca-methyl-cobaltocene, [Co(C(10)H(15))(2)], has been determined. High-quality single crystals were grown from a cold saturated hexa-methyl-disiloxane solution. The structure is related to the manganese and iron analogs. The molecule has D(5d) symmetry, with the Co atom in a crystallographic 2/m position. The cobalt-centroid(C(5)) distance is 1.71Å and the centroid(C(5))-Co-centroid(C(5)) angle is 180°, by symmetry.

| S-EPMC2969061 | biostudies-literature

Acetonitrile-dicarbon-yl(?-penta-methyl-cyclo-penta-dien-yl)iron(II) tetra-fluorido-borate.

Project description:In the structure of the title compound, [Fe{?(5)-C(5)(CH(3))(5)}(NCCH(3))(CO)(2)]BF(4), the arrangement of ligands around the Fe atom is in a pseudo-octa-hedral three-legged piano-stool fashion in which the penta-methyl-cyclo-penta-dienyl (Cp*) ligand occupies three apical coordination sites, while the two carbonyl and one acetonitrile ligands form the basal axes of the coordination. The Fe-N bond length is 1.924?(3)?Å and the Fe-Cp* centroid distance is 1.722?Å.

| S-EPMC3151746 | biostudies-literature

(Glycol-κO,O')nitros-yl(η-penta-methyl-cyclo-penta-dien-yl)ruthenium(II) bis-(tri-fluoro-methane-sulfonate).

Project description:The title compound, [Ru(C(10)H(15))(NO)(HOCH(2)CH(2)OH)](CF(3)SO(3))(2), possesses a three-legged piano-stool geometry around the Ru atom, with an average Ru-O distance of 2.120 (6) Å and an Ru-N-O angle of 159.45 (14)°. The ethyl-eneglycol ligand forms a non-planar metallacyclic ring by chelating the Ru atom via the O atoms. The O⋯O distances of 2.554 (2) and 2.568 (2) Å are indicative of hydrogen bonding between coordinated ethyl-eneglycol and outer-sphere trifluoro-methane-sulfonate fragments. The crystal packing is stabilized by ionic forces and several CH(3)⋯·F (2.585 and 2.640 Å) and CH(3)⋯O inter-actions (2.391, 2.678, 2.694 and 2.699 Å) between the penta-methyl-cyclo-penta-dienyl ligand and trifluoro-methane-sulfonate anion. There is noticeable short inter-molecular contact [2.9039 (16) Å], between an O atom of the SO(3) group and a C atom of the penta-methyl-cyclo-penta-dienyl ligand.

| S-EPMC2960154 | biostudies-literature

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