Structural preferences and pp coupling constants in some five-coordinate cobalt(I) complexes

R. Mason; G. R. Scollary; Daniel L DuBois; D. W. Meek

doi:10.1016/S0022-328X(00)87243-5

Structural preferences and pp coupling constants in some five-coordinate cobalt(I) complexes

R. Mason, G. R. Scollary, Daniel L DuBois, D. W. Meek

Pacific Northwest National Laboratory

Research output: Contribution to journal › Article

21 Citations (Scopus)

Abstract

Phosphorus-31 NMR and X-ray crystallography show that the two similar chelating triphosphine ligands PhP(CH₂CH₂PPh₂)₂(2,2-P₃) and PhP(CH₂CH₂CH₂ PPh₂)₂(33-P₃) form cobalt(I) complexes having trigonal-bipyramidal and square-pyramidal structures, respectively. The structures and PP coupling constants of [Co(33-P₃)(P(OMe)₃)CO]BF₄·1THF and [Co(22-P₃)(P(OMe)₃)₂]BF₄ are given, and the change from square-pyramidal geometry in [Co(33-P₃)P(OMe)₃)CO]⁺ to trigonal-bipyramidal in [Co(22-P₃)(P(OMe)₃)₂]⁺ may be rationalized in terms of a decreased "chelate bite angle" for the PhP(CH₂CH₂PPh₂)₂ ligand.

Original language	English
Journal	Journal of Organometallic Chemistry
Volume	114
Issue number	2
DOIs	https://doi.org/10.1016/S0022-328X(00)87243-5
Publication status	Published - Jul 20 1976

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ASJC Scopus subject areas

Biochemistry
Chemical Engineering (miscellaneous)
Inorganic Chemistry
Organic Chemistry
Physical and Theoretical Chemistry
Materials Science (miscellaneous)
Materials Chemistry

Cite this

Mason, R., Scollary, G. R., DuBois, D. L., & Meek, D. W. (1976). Structural preferences and pp coupling constants in some five-coordinate cobalt(I) complexes. Journal of Organometallic Chemistry, 114(2). https://doi.org/10.1016/S0022-328X(00)87243-5

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title = "Structural preferences and pp coupling constants in some five-coordinate cobalt(I) complexes",

abstract = "Phosphorus-31 NMR and X-ray crystallography show that the two similar chelating triphosphine ligands PhP(CH2CH2PPh2)2(2,2-P3) and PhP(CH2CH2CH2 PPh2)2(33-P3) form cobalt(I) complexes having trigonal-bipyramidal and square-pyramidal structures, respectively. The structures and PP coupling constants of [Co(33-P3)(P(OMe)3)CO]BF4·1THF and [Co(22-P3)(P(OMe)3)2]BF4 are given, and the change from square-pyramidal geometry in [Co(33-P3)P(OMe)3)CO]+ to trigonal-bipyramidal in [Co(22-P3)(P(OMe)3)2]+ may be rationalized in terms of a decreased {"}chelate bite angle{"} for the PhP(CH2CH2PPh2)2 ligand.",

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AU - Mason, R.

AU - Scollary, G. R.

AU - DuBois, Daniel L

AU - Meek, D. W.

PY - 1976/7/20

Y1 - 1976/7/20

N2 - Phosphorus-31 NMR and X-ray crystallography show that the two similar chelating triphosphine ligands PhP(CH2CH2PPh2)2(2,2-P3) and PhP(CH2CH2CH2 PPh2)2(33-P3) form cobalt(I) complexes having trigonal-bipyramidal and square-pyramidal structures, respectively. The structures and PP coupling constants of [Co(33-P3)(P(OMe)3)CO]BF4·1THF and [Co(22-P3)(P(OMe)3)2]BF4 are given, and the change from square-pyramidal geometry in [Co(33-P3)P(OMe)3)CO]+ to trigonal-bipyramidal in [Co(22-P3)(P(OMe)3)2]+ may be rationalized in terms of a decreased "chelate bite angle" for the PhP(CH2CH2PPh2)2 ligand.

AB - Phosphorus-31 NMR and X-ray crystallography show that the two similar chelating triphosphine ligands PhP(CH2CH2PPh2)2(2,2-P3) and PhP(CH2CH2CH2 PPh2)2(33-P3) form cobalt(I) complexes having trigonal-bipyramidal and square-pyramidal structures, respectively. The structures and PP coupling constants of [Co(33-P3)(P(OMe)3)CO]BF4·1THF and [Co(22-P3)(P(OMe)3)2]BF4 are given, and the change from square-pyramidal geometry in [Co(33-P3)P(OMe)3)CO]+ to trigonal-bipyramidal in [Co(22-P3)(P(OMe)3)2]+ may be rationalized in terms of a decreased "chelate bite angle" for the PhP(CH2CH2PPh2)2 ligand.

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10.1016/S0022-328X(00)87243-5