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 › peer-review

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

ASJC Scopus subject areas

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

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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.",

author = "R. Mason and Scollary, {G. R.} and DuBois, {Daniel L} and Meek, {D. W.}",

year = "1976",

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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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