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Chloridotris(penta-fluoro-benzene-thiol-ato-κS)[tris-(4-fluoro-phen-yl)phosphine-κP]osmium(IV).

Arias A, Meléndez L, Bernès S, Arroyo M - Acta Crystallogr Sect E Struct Rep Online (2010)

Bottom Line: The phosphine ligand trans to the chloride ligand reveals a short Os-P bond length compared to other chloride-phosphine Os(IV) complexes (average = 2.40 Å).This strong bonding indicates that the inductive effect of the F atoms in the phosphine does not affect significantly its basicity, compared to triphenyl-phosphine.This feature is also consistent with the known poor trans influence of Cl(-).

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ABSTRACT
The title complex, [Os(C(6)F(5)S)(3)Cl(C(18)H(12)F(3)P)], displays a trigonal-bipyramidal Os(IV) coordination geometry with the S atoms of three thiol-ate ligands occupying the equatorial positions. The thiol-ate penta-fluoro-phenyl substituents are all placed above the equatorial plane, forming a claw-like cavity which accommodates the chloride ligand with a normal Os-Cl bond length. The phosphine ligand trans to the chloride ligand reveals a short Os-P bond length compared to other chloride-phosphine Os(IV) complexes (average = 2.40 Å). This strong bonding indicates that the inductive effect of the F atoms in the phosphine does not affect significantly its basicity, compared to triphenyl-phosphine. This feature is also consistent with the known poor trans influence of Cl(-). The crystal packing involves π-π contacts between inversion-related thiol-ate C(6)F(5) rings, with a centroid-centroid separation of 3.659 (8) Å.

No MeSH data available.


Related in: MedlinePlus

Part of the crystal structure with the shortest π–π contact showed by dashed line. Symmetry related molecules are represented by different colours; grey: asymmetric unit; gold: 1-x, 1-y, 1-z; green: 1-x, -1/2+y, 3/2-z; purple: x, 3/2-y, -1/2+z.
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Fap2: Part of the crystal structure with the shortest π–π contact showed by dashed line. Symmetry related molecules are represented by different colours; grey: asymmetric unit; gold: 1-x, 1-y, 1-z; green: 1-x, -1/2+y, 3/2-z; purple: x, 3/2-y, -1/2+z.


Chloridotris(penta-fluoro-benzene-thiol-ato-κS)[tris-(4-fluoro-phen-yl)phosphine-κP]osmium(IV).

Arias A, Meléndez L, Bernès S, Arroyo M - Acta Crystallogr Sect E Struct Rep Online (2010)

Part of the crystal structure with the shortest π–π contact showed by dashed line. Symmetry related molecules are represented by different colours; grey: asymmetric unit; gold: 1-x, 1-y, 1-z; green: 1-x, -1/2+y, 3/2-z; purple: x, 3/2-y, -1/2+z.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC2983803&req=5

Fap2: Part of the crystal structure with the shortest π–π contact showed by dashed line. Symmetry related molecules are represented by different colours; grey: asymmetric unit; gold: 1-x, 1-y, 1-z; green: 1-x, -1/2+y, 3/2-z; purple: x, 3/2-y, -1/2+z.
Bottom Line: The phosphine ligand trans to the chloride ligand reveals a short Os-P bond length compared to other chloride-phosphine Os(IV) complexes (average = 2.40 Å).This strong bonding indicates that the inductive effect of the F atoms in the phosphine does not affect significantly its basicity, compared to triphenyl-phosphine.This feature is also consistent with the known poor trans influence of Cl(-).

View Article: PubMed Central - HTML - PubMed

ABSTRACT
The title complex, [Os(C(6)F(5)S)(3)Cl(C(18)H(12)F(3)P)], displays a trigonal-bipyramidal Os(IV) coordination geometry with the S atoms of three thiol-ate ligands occupying the equatorial positions. The thiol-ate penta-fluoro-phenyl substituents are all placed above the equatorial plane, forming a claw-like cavity which accommodates the chloride ligand with a normal Os-Cl bond length. The phosphine ligand trans to the chloride ligand reveals a short Os-P bond length compared to other chloride-phosphine Os(IV) complexes (average = 2.40 Å). This strong bonding indicates that the inductive effect of the F atoms in the phosphine does not affect significantly its basicity, compared to triphenyl-phosphine. This feature is also consistent with the known poor trans influence of Cl(-). The crystal packing involves π-π contacts between inversion-related thiol-ate C(6)F(5) rings, with a centroid-centroid separation of 3.659 (8) Å.

No MeSH data available.


Related in: MedlinePlus