μ-1,4-Bis(diphenylphosphino)phenylene-P:P'-bis[μ3-benzylidyne-octacarbonyl-triangulo-tricobalt(3Co—Co)]

Alexander, Nagarajan; Robinson, Brian H.

doi:10.1107/s010827019601503x

Cited by 3 publications

(2 citation statements)

References 2 publications

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“…Deformation also extends to the Co-C1 distances with the C1-Co3 bond, 1.9332(12) Å much longer than the C1-Co1, 1.8993(12) Å and C1-C2, 1.8982(12) Å vectors. Similar variations have been observed previously in di-cluster systems with two cluster units bridged by bidentate phosphine ligands [14,15]. The distortion is further manifest by the apical methyl substituent inclining away from the phosphine substituent with a C2-C1ÁÁÁCg1 angle of 174.2°( Cg1 is the centroid of the Co1, Co2, Co3 triangle).…”

Section: Resultssupporting

confidence: 81%

“…Analysis of the principal Co-P dimensions using VISTA [16] shows the coordination environment of the phosphine ligand to be reasonably similar to those of the eight other structures of methinyltricobalt clusters substituted with a single monodentate phosphine ligand [4,14,15,17] that are reported in the Cambridge Structural Database (CSD Version 5.28 to January 2007) [18]. The Co1-P1 distance 2.2337(3) Å agrees well with the mean value of 2.233(4) Å for the comparable structures as do the P1-Co1-C1 and P1-Co1-Co3 angles, 112.87(4) and 162.361(12) compared to means of 110(1) and 158(1), respectively.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

μ3-ethylidyne-triphenylphosphine-octacarbonyltricobalt: a re-determination from diffractometer data

2007

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The structure of the title compound was originally reported from film data (Brice et al., Inorg Chem 9:362, 1970) and comprises a triangle of cobalt atoms capped by an ethylidyne substituent to form an approximately tetrahedral cluster unit. The triphenylphosphine ligand lies in an equatorial position with respect to the plane of the cobalt triangle. Two carbonyl groups, one axial the other equatorial, complete the coordination sphere of the cobalt atom bound to phosphorus. The other two cobalt atoms each carry two equatorial and one axial carbonyl ligand. The Co-Co bond cis to the phosphine substituent is significantly longer than the other two Co-Co distances. The crystal structure is stabilised by C-HÁÁÁp interactions and C-HÁÁÁO hydrogen bonds.

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Section: Resultssupporting

confidence: 81%