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Trans-Tetra-carbonyl-bis-[tris-(4-fluoro-phen-yl)phosphane-κP]chromium(0).

ABSTRACT: In the title compound, [Cr(C(18)H(12)F(3)P)(2)(CO)(4)], the Cr atom is octa-hedrally coordinated by four carbonyl ligands and the two tertiary phosphanes that are trans to each other. The Cr atom and two carbonyl groups are on a twofold axis. The benzene rings attached to the phospho-rus atom make dihedral angles of 80.32 (5), 52.91 (5) and 83.80 (5)° with each other. In the crystal, C-H⋯O and C-H⋯F inter-molecular inter-actions form an infinite three-dimensional network.

SUBMITTER: Norlidah MN

PROVIDER: S-EPMC3200925 | biostudies-literature |

REPOSITORIES: biostudies-literature

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trans-Tetra-carbonyl-bis-[tris-(3-fluoro-phen-yl)phosphane]chromium(0).

Project description:In the title compound, [Cr(C(18)H(12)F(3)P)(2)(CO)(4)], the Cr atom is octa-hedrally coordinated by four carbonyl ligands and the two tertiary phosphanes, which are trans to each other. The three benzene rings in one phosphane ligand make dihedral angles of 53.50?(9), 75.51?(10) and 80.63?(10)° with each other, while in the other ligand these angles are 51.92?(10), 78.56?(11) and 86.80?(10)°. C-H?O and C-H?F inter-actions link the mol-ecules into a three-dimensional network. Each of the F atoms is disordered over two positions with refined occupancies of 0.944?(3):0.056?(3), 0.702?(4):0.298?(4), 0.829?(4):0.171?(4), 0.567?(4):0.433?(4), 0.545?(4):0.455?(4) and 0.920?(4):0.080?(4).

| S-EPMC3238589 | biostudies-literature

trans-Tetra-carbonyl-bis-(tri-phenyl-phosphane-?P)molybdenum(0).

Project description:The well known title compound, trans-[Mo(C18H15P)2(CO)4], has not been studied previously by X-ray crystallography, unlike its cis isomer. The complex possesses crystallographically imposed inversion symmetry, with the Mo atom residing on an inversion centre (1a Wyckoff position). The two tri-phenyl-phosphane groups are arranged in a staggered orientation. Each of the phenyl groups exhibits significantly different Mo-P-C-C torsion angles ranging from 2.6?(2) to 179.4?(1)°, most likely due to steric inter-actions based upon their positions relative to the carbonyl ligands.

| S-EPMC3998249 | biostudies-literature

trans-Carbonyl-chloridobis[tris-(4-chloro-phen-yl)phosphane]rhodium(I) acetone monosolvate.

Project description:The title compound, trans-[RhCl(C(18)H(12)Cl(3)P)(2)(CO)]·C(3)H(6)O, contains an Rh(I) atom in a distorted square-planar coordination with a P-Rh-P angle of 175.27?(2)° and Rh-P bond lengths of 2.3127?(4) and 2.3219?(4)?Å. The rhodium complexes link each other through weak inter-molecular contacts between the acetone methyl groups and the carbonyl O atom. Inter-actions between the acetone solvent mol-ecule and the Cl-Rh unit results in a reduced P-Rh-Cl angle of 86.675?(15)°.

| S-EPMC3009219 | biostudies-literature

trans-Carbonyl-chloridobis[tris-(4-meth-oxy-phen-yl)phosphane-?P]rhodium(I).

Project description:The title complex, [RhCl(C(21)H(21)O(3)P)(2)(CO)], is a rhodium analogue to Vaska's complex with para-meth-oxy substituents on the six phosphan-yl-aryl units. Two independent mol-ecules are present in the unit cell, with their metal atoms both located on an inversion centre. This causes the chloride and carbonyl ligands to exhibit a positional disorder in a 0.5:0.5 ratio. The two Rh(I) atoms exhibit a distorted square-planar geometry. There are a few weak intra-molecular C-H?X inter-actions (X = O, Cl). Inter-estingly, no significant inter-molecular inter-actions are found between the two independent mol-ecules.

| S-EPMC3238621 | biostudies-literature

(?-s-cis-1,3-Butadiene)tetra-carbonyl-chromium(0).

Project description:In the title complex, [Cr(C(4)H(6))(CO)(4)], the Cr(0) atom shows a distorted octa-hedral environment from four C atoms of the carbonyl ligands and the two ?-bonds of the s-cis-1,3-butadiene ligand. The complex has an approximate non-crystallographic mirror symmetry m passing through the chromium atom, two carbonyl ligands and the mid-point of the central C-C bond of the s-cis-1,3-butadiene ligand. The C-C bond lengths in the s-cis-1,3-butadiene ligand alternate, the terminal distances being shorter than the central distance.

| S-EPMC3052012 | biostudies-literature

(Nitrato-?O)tris-[tris-(4-fluoro-phen-yl)phosphane-?P]copper(I).

Project description:In the title complex, [Cu(NO(3))(C(18)H(12)F(3)P)(3)], the ligating atoms define a distorted tetrahedon with the three tris-(4-fluoro-phen-yl)phosphane ligands in the basal positions and the nitrate ligand in the axial position. The intra-molecular ?-? inter-action [centroid-centroid distance = 3.6113?(11)?Å] between two of the 4-fluoro-phenyl groups is complemented by both C-H?F and C-H?O inter-actions with distances in the range 2.51-2.60?Å, resulting in a tight head-to-tail packing.

| S-EPMC3515141 | biostudies-literature

[N,N'-Bis(2,4,6-trimethyl-phen-yl)ethane-1,2-diimine-?(2)N,N']tetra-carbonyl-chromium(0).

Project description:The octa-hedral coordination of the Cr(0) atom in the title compound, [Cr(C(20)H(24)N(2))(CO)(4)], displays some distortion. This is manifested by an exocyclic torsion angle C(mesitylene)-N-Cr-C(carbon-yl) that deviates by more than 20° from planarity. Another structural feature is the significant distortion from linearity of the Cr-C-O angles of the two carbonyl groups that inter-act with both ortho-methyl groups of the two mesitylene rings. The remaining two carbonyl groups overlap with the centres of the mesitylene rings themselves and are linear within <3°.

| S-EPMC3393193 | biostudies-literature

trans-Dichloridobis[dicyclo-hex-yl(2,4,6-trimethyl-phen-yl)phosphane-κP]palladium(II).

Project description:The title compound, [PdCl(2)(C(21)H(33)P)(2)], forms a monomeric complex with a trans-square-planar coordination geometry about the Pd(II) atom which lies on an inversion centre. The Pd-P bond lengths are 2.3760 (13) Å, while the Pd-Cl bond lengths are 2.3172 (14) Å. The observed structure was found to be closely related to that of trans-dichloridobis[dicyclo-hex-yl(phen-yl)phosphane-κP]palladium(II), [PdCl(2){P(C(6)H(11))(2)(C(6)H(5))}(2)] [Burgoyne et al. (2012 ▶). Acta Cryst. E68, m404].

| S-EPMC3515096 | biostudies-literature

Tetra-phenyl-phospho-nium [?3-(4-methyl-phen-yl)tellurolato]tris-[tetra-carbonyl-iron(0)].

Project description:In the anion of the title compound, (C24H20P)[Fe3(C7H7Te)(CO)12], each Fe(0) atom is coordinated by four CO ligands and a Te atom, resulting in a trigonal-bipyramidal coordination environment. The Te atom is coordinated by a 4-methyl-phenyl group and the Fe(0) atoms in a distorted tetra-hedral geometry. The average Te-Fe bond length is 2.574?(4)?Å.

| S-EPMC3684888 | biostudies-other

[1,3-Bis(diphenyl-phosphino)pentane-?P,P']tetra-carbonyl-chromium(0).

Project description:In the title compound, [Cr(C(29)H(30)P(2))(CO)(4)], the Cr atom is octa-hedrally coordinated by four carbonyl ligands and one bidentate phosphine ligand, which is bounded as a chelate in a cis position. The average Cr-P and Cr-C bond lengths are 2.377 and 1.865?Å, respectively.

| S-EPMC2968563 | biostudies-literature

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