Coordinatively unsaturated molybdenum and tungsten acetylene complexes [M(η5-C5 H5)Cl(CF3 CCCF3)2]: reactions with charged and uncharged nucleophiles

Jack L. Davidson

Coordinatively unsaturated molybdenum and tungsten acetylene complexes [M(η⁵-C₅ H₅)Cl(CF₃ CCCF₃)₂]: reactions with charged and uncharged nucleophiles

Jack L. Davidson

School of Engineering & Physical Sciences

Research output: Contribution to journal › Article › peer-review

Abstract

The bis-alkyne complex [M(?⁵-C₅ H₅)Cl(CF₃ CCCF₃)₂] (M = W) undergoes metathetical reactions with TlSR (R = Ph, 4-MeC₆ H₄, Et, i-Pr or t-Bu) to give complexes of stoichiometry [W(?⁵-C₅ H₅)SR(CF₃ CCCF₃)₂] which, with the more electron donating groups R, exist as sulphur-bridged dimers. Thallium acetate gives [M(?⁵-C₅ H₅)MeC(O)O(CF₃ CCCF₃)₂] (M = Mo, W) with a monodentate acetate ligand while Na S₂ CNR₂ (R = Et) gives [M(?⁵-C₅ H₅)S₂ CNR₂ (CF₃ CCCF₃)₂] (M = Mo, W) containing a bidentate dithiocarbamate ligand. [W(?⁵-C₅ H₅)S-4-MeC₆ H₄ (CF₃ CCCF₃)₂] gives 1 1 adducts in reactions with uncharged nucleophiles PEt₃, PMe₂ Ph and P(OMe)₃. Acetylene propeller rotation is observed in several of these derivatives. © 1980.

Original language	English
Pages (from-to)	C19-C22
Journal	Journal of Organometallic Chemistry
Volume	186
Issue number	1
Publication status	Published - 19 Feb 1980

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title = "Coordinatively unsaturated molybdenum and tungsten acetylene complexes [M(η5-C5 H5)Cl(CF3 CCCF3)2]: reactions with charged and uncharged nucleophiles",

abstract = "The bis-alkyne complex [M(?5-C5 H5)Cl(CF3 CCCF3)2] (M = W) undergoes metathetical reactions with TlSR (R = Ph, 4-MeC6 H4, Et, i-Pr or t-Bu) to give complexes of stoichiometry [W(?5-C5 H5)SR(CF3 CCCF3)2] which, with the more electron donating groups R, exist as sulphur-bridged dimers. Thallium acetate gives [M(?5-C5 H5)MeC(O)O(CF3 CCCF3)2] (M = Mo, W) with a monodentate acetate ligand while Na S2 CNR2 (R = Et) gives [M(?5-C5 H5)S2 CNR2 (CF3 CCCF3)2] (M = Mo, W) containing a bidentate dithiocarbamate ligand. [W(?5-C5 H5)S-4-MeC6 H4 (CF3 CCCF3)2] gives 1 1 adducts in reactions with uncharged nucleophiles PEt3, PMe2 Ph and P(OMe)3. Acetylene propeller rotation is observed in several of these derivatives. {\textcopyright} 1980.",

author = "Davidson, \{Jack L.\}",

year = "1980",

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language = "English",

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journal = "Journal of Organometallic Chemistry",

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T1 - Coordinatively unsaturated molybdenum and tungsten acetylene complexes [M(η5-C5 H5)Cl(CF3 CCCF3)2]

T2 - reactions with charged and uncharged nucleophiles

AU - Davidson, Jack L.

PY - 1980/2/19

Y1 - 1980/2/19

N2 - The bis-alkyne complex [M(?5-C5 H5)Cl(CF3 CCCF3)2] (M = W) undergoes metathetical reactions with TlSR (R = Ph, 4-MeC6 H4, Et, i-Pr or t-Bu) to give complexes of stoichiometry [W(?5-C5 H5)SR(CF3 CCCF3)2] which, with the more electron donating groups R, exist as sulphur-bridged dimers. Thallium acetate gives [M(?5-C5 H5)MeC(O)O(CF3 CCCF3)2] (M = Mo, W) with a monodentate acetate ligand while Na S2 CNR2 (R = Et) gives [M(?5-C5 H5)S2 CNR2 (CF3 CCCF3)2] (M = Mo, W) containing a bidentate dithiocarbamate ligand. [W(?5-C5 H5)S-4-MeC6 H4 (CF3 CCCF3)2] gives 1 1 adducts in reactions with uncharged nucleophiles PEt3, PMe2 Ph and P(OMe)3. Acetylene propeller rotation is observed in several of these derivatives. © 1980.

AB - The bis-alkyne complex [M(?5-C5 H5)Cl(CF3 CCCF3)2] (M = W) undergoes metathetical reactions with TlSR (R = Ph, 4-MeC6 H4, Et, i-Pr or t-Bu) to give complexes of stoichiometry [W(?5-C5 H5)SR(CF3 CCCF3)2] which, with the more electron donating groups R, exist as sulphur-bridged dimers. Thallium acetate gives [M(?5-C5 H5)MeC(O)O(CF3 CCCF3)2] (M = Mo, W) with a monodentate acetate ligand while Na S2 CNR2 (R = Et) gives [M(?5-C5 H5)S2 CNR2 (CF3 CCCF3)2] (M = Mo, W) containing a bidentate dithiocarbamate ligand. [W(?5-C5 H5)S-4-MeC6 H4 (CF3 CCCF3)2] gives 1 1 adducts in reactions with uncharged nucleophiles PEt3, PMe2 Ph and P(OMe)3. Acetylene propeller rotation is observed in several of these derivatives. © 1980.

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M3 - Article

SN - 0022-328X

VL - 186

SP - C19-C22

JO - Journal of Organometallic Chemistry

JF - Journal of Organometallic Chemistry

IS - 1

ER -

Coordinatively unsaturated molybdenum and tungsten acetylene complexes [M(η⁵-C₅ H₅)Cl(CF₃ CCCF₃)₂]: reactions with charged and uncharged nucleophiles

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