Ligand exchange in cyclopentadienylcobalt diselenolenes. Isolation and characterization of the Se3-chelate, C5H5Co[(SeC8H12)2Se]

Morley, Christopher P.; Vaughan, Richard R.

doi:10.1016/0022-328x(93)83077-9

Cited by 17 publications

(3 citation statements)

References 13 publications

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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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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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“…After the removal of the solvent from the filtrate, the residue was subjected to chromatographic workup using silica-gel TLC plates. Elution with hexane/CH 2 Cl 2 (70:30 v/v) yielded green, [Cp*Co{k 2 -Se,Se-Se 2 C 2 HPh}], 4 (0.016 g, 20 %), [26,37] some other low yield compounds could not be isolated.…”

Section: Synthesis Ofmentioning

confidence: 99%

“…revealed 4 as cobalt-seleniumm etallaheterocycle,[ Cp*Co{k 2 -Se,Se-Se 2 C 2 HPh}],w hich was spectroscopically characterised earlier by Morley'sg roup. [26] The solid-state structure of 4 is shown in Figure 4. Compound 4 might have formed through the borane displacement from 2,which was confirmedb ytrapping the free borane as BH 3 •PCy 3 adduct.…”

Section: Introductionmentioning

confidence: 99%

Chalcogen Stabilized bis‐Hydridoborate Complexes of Cobalt: Analogues of Tetracyclo[4.3.0.0^2,4.0^3,5]nonane

Joseph

Gomosta

Prakash

et al. 2020

Chemistry A European J

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Treatment of Li[BH3ER] (E=Se or Te, R=Ph; E=S, R=CH2Ph) with [Cp*CoCl]2 led to the formation of hydridoborate complexes, [{CoCp*Ph}{Cp*Co}{μ‐EPh}{μ‐κ2‐E,H‐EBH3}], 1a and 1 b (1 a: E=Se; 1 b: E=Te) and a bis‐hydridoborate species [Cp*Co{μ‐κ2‐Se,H‐SeBH3}]2, 2. All the complexes, 1 a, 1 b and 2 are stabilized by β‐agostic type interaction in which 1 b represents a novel bimetallic borate complex with a rare B−Te bond. QTAIM analysis furnished direct proof for the existence of a shared and dative B‐chalcogen and Co‐chalcogen interactions, respectively. In parallel to the formation of the hydridoborate complexes, the reactions also yielded tetracyclic species, [Cp*Co{κ3‐E,H,H‐E(BH2)2‐C5Me5H3}], 3 a and 3 b (3 a: E=Se and 3 b: E=S), wherein the bridgehead boron atoms are surrounded by one chalcogen, one cobalt and two carbon atoms of a cyclopentane ring. Molecules 3 a and 3 b are best described as the structural mimic of tetracyclo[4.3.0.02,4.03,5]nonane having identical structure and similar valence electron counts.

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ChemInform Abstract: Ligand Exchange in Cyclopentadienylcobalt Diselenolenes. Isolation and Characterization of the Se3‐Chelate, C5H5Co((SeC8H12)2Se).

Morley

Vaughan

1993

ChemInform

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Ligand exchange in cyclopentadienylcobalt diselenolenes. Isolation and characterization of the Se3-chelate, C5H5Co[(SeC8H12)2Se]

Cited by 17 publications

References 13 publications

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]

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]

Chalcogen Stabilized bis‐Hydridoborate Complexes of Cobalt: Analogues of Tetracyclo[4.3.0.0^2,4.0^3,5]nonane

ChemInform Abstract: Ligand Exchange in Cyclopentadienylcobalt Diselenolenes. Isolation and Characterization of the Se3‐Chelate, C5H5Co((SeC8H12)2Se).

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Ligand exchange in cyclopentadienylcobalt diselenolenes. Isolation and characterization of the Se3-chelate, C5H5Co[(SeC8H12)2Se]

Cited by 17 publications

References 13 publications

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]

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]

Chalcogen Stabilized bis‐Hydridoborate Complexes of Cobalt: Analogues of Tetracyclo[4.3.0.02,4.03,5]nonane

ChemInform Abstract: Ligand Exchange in Cyclopentadienylcobalt Diselenolenes. Isolation and Characterization of the Se3‐Chelate, C5H5Co((SeC8H12)2Se).

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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]

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]

Chalcogen Stabilized bis‐Hydridoborate Complexes of Cobalt: Analogues of Tetracyclo[4.3.0.0^2,4.0^3,5]nonane