Synthesis and characterisation of cyclopentadienylcobalt and pentamethylcyclopentadienylcobalt diselenolenes

Morley, Christopher P.; Vaughan, Richard R.

doi:10.1039/dt9930000703

Cited by 23 publications

(5 citation statements)

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“…The reactions of 1,2,3-selenadiazoles with low-valent transition metal compounds have previously been used, by us 15 and others, 16 to prepare a wide variety of selenium-containing complexes. In particular we have shown that cyclopentadienylcobalt 17 and palladium 18 diselenolenes bearing hydrocarbon substituents may be produced by this route. Palladium diselenolenes can also be prepared from 1,4-diselenins, the products of thermolysis of 1,2,3-selenadiazoles.…”

Section: Introductionmentioning

confidence: 98%

Synthesis, characterisation and photochemistry of platinum diselenolenes

et al. 2010

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The reaction between [Pt(PPh(3))(4)] and cycloocteno-1,2,3-selenadiazole or bis-cycloocteno-1,4-diselenin in toluene under reflux yielded the poorly soluble mononuclear platinum diselenolene [Pt(Se(2)C(8)H(12))(PPh(3))(2)], 1c. Treatment of [Pt(C(2)H(4))(PR(3))(2)] with a bis-cycloalkeno-1,4-diselenin in a mixture of 1,4-dioxane, THF and toluene under reflux led in good yield to the platinum diselenolenes [Pt(Se(2)C(n+4)H(2n+4))(PR(3))(2)] (R = Et (2), Bu (3); n = 3 (b), 4 (c)). The analogous complexes [Pt(Se(2)C(8)H(12))(L)] (L = dppm: 4c; L = dppe: 5c; L = dppp: 6c) were prepared from 1c via ligand exchange with chelating phosphines. All new compounds have been characterised by multinuclear NMR, IR and UV-visible spectroscopy and mass spectrometry, and their luminescence properties have been examined. The molecular structures of [Pt(Se(2)C(7)H(10))(PEt(3))(2)] (2b), [Pt(Se(2)C(8)H(12))(PEt(3))(2)] (2c) and [Pt(Se(2)C(8)H(12))(dppm)] (4c) have been determined by X-ray crystallography.

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Section: Introductionmentioning

confidence: 98%

Synthesis, characterisation and photochemistry of platinum diselenolenes

et al. 2010

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“…The reactions of 1,2,3-selenadiazoles with low-valent transition metal compounds have previously been used, by us and others, to prepare a wide variety of selenium- containing complexes. In particular, we have shown that cyclopentadienylcobalt diselenolenes can be produced by this route …”

Section: Introductionmentioning

confidence: 99%

Synthesis and Properties of Palladium Diselenolenes: X-ray Crystal Structures of [Pd{SeC(R¹)C(R²)Se}(PBu₃)₂] [R¹, R² = (CH₂)_n, n = 4, 5, 6]

2004

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The reaction between [Pd(2)(dba)(3)] (dba = dibenzylideneacetone), tributylphosphine, and a bis(cycloalkeno)-1,4-diselenin leads to either a mononuclear diselenolene [Pd[SeC(R(1))=C(R(2))Se](PBu(3))(2)] or a dinuclear diselenolene [Pd(2)[SeC(R(1))=C(R(2))Se](2)(PBu(3))(2)] [R(1), R(2) = (CH(2))(n), n = 4, 5, 6] depending on the stoichiometry employed. Treatment of the dinuclear diselenolenes with 1,2-bis(diphenylphosphino)ethane (dppe) provides a high-yielding route to the mononuclear species [Pd[SeC(R(1))=C(R(2))Se](dppe)]. All new compounds have been characterized by standard spectroscopic and analytical techniques, in particular by multinuclear NMR spectroscopy; the structure of each of the mononuclear tributylphosphine complexes has been determined by X-ray crystallography. Computational studies show that the observed asymmetry of the diselenolenes in the solid state is a result primarily of intramolecular repulsive interactions between the ligands.

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“…(1)]. 12 We now present the results of a study of the reactions of 1,2,3-selenadiazoles with the bis(triphenylphosphine)palladium(0) moiety, which is isolobal with cyclopentadienylcobalt(). 13…”

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Dinuclear diselenolenes derived from cycloalkeno-1,2,3-selenadiazoles and tetrakis(triphenylphosphine)palladium

Ford¹,

Khanna²,

Morley³

et al. 1999

J. Chem. Soc., Dalton Trans.

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Synthesis and characterisation of cyclopentadienylcobalt and pentamethylcyclopentadienylcobalt diselenolenes

Cited by 23 publications

References 21 publications

Synthesis, characterisation and photochemistry of platinum diselenolenes

Synthesis, characterisation and photochemistry of platinum diselenolenes

Synthesis and Properties of Palladium Diselenolenes: X-ray Crystal Structures of [Pd{SeC(R¹)C(R²)Se}(PBu₃)₂] [R¹, R² = (CH₂)_n, n = 4, 5, 6]

Dinuclear diselenolenes derived from cycloalkeno-1,2,3-selenadiazoles and tetrakis(triphenylphosphine)palladium

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Synthesis and characterisation of cyclopentadienylcobalt and pentamethylcyclopentadienylcobalt diselenolenes

Cited by 23 publications

References 21 publications

Synthesis, characterisation and photochemistry of platinum diselenolenes

Synthesis, characterisation and photochemistry of platinum diselenolenes

Synthesis and Properties of Palladium Diselenolenes: X-ray Crystal Structures of [Pd{SeC(R1)C(R2)Se}(PBu3)2] [R1, R2 = (CH2)n, n = 4, 5, 6]

Dinuclear diselenolenes derived from cycloalkeno-1,2,3-selenadiazoles and tetrakis(triphenylphosphine)palladium

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Synthesis and Properties of Palladium Diselenolenes: X-ray Crystal Structures of [Pd{SeC(R¹)C(R²)Se}(PBu₃)₂] [R¹, R² = (CH₂)_n, n = 4, 5, 6]