Structure of η<sup>5</sup>-cyclopentadienyl(η<sup>6</sup>-2,4,6-triphenylphosphorin)manganese(I)

Fischer, Joachim; Cian, A. De; Nief, François

doi:10.1107/s0567740881005074

Cited by 14 publications

(3 citation statements)

References 8 publications

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“…The average distance between iron and the six atoms of the heterocycle is 2.17 Å. This distance is only slightly shorter than the value of 2.29 Å found in (η 6 -2,4,6-triphenylphosphinine)Cr(CO) 3 25 but is identical to the value found in Cp(η 6 -2,4,6-triphenylphosphinine)Mn . The bonding distances and angles within the phosphinine ring of 3 are also similar to the values found for coordinated 2,4,6-triphenylphosphinine in the CpMn complex.…”

Section: Resultssupporting

confidence: 75%

“…This distance is only slightly shorter than the value of 2.29 Å found in (η 6 -2,4,6-triphenylphosphinine)Cr(CO) 3 25 but is identical to the value found in Cp(η 6 -2,4,6-triphenylphosphinine)-Mn. 26 The bonding distances and angles within the phosphinine ring of 3 are also similar to the values found for coordinated 2,4,6-triphenylphosphinine in the CpMn complex. Obviously neither the identity of the transition metal nor the presence of alkyl, aryl, or silyl substituents on the phosphinine ring can cause significant structural changes in (η 6 -phosphinine)metal complexes.…”

Section: Resultssupporting

confidence: 72%

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(η⁴-1,5-Cyclooctadiene)(η⁶-phosphinine)iron(0): Novel Room-Temperature Catalyst for Pyridine Formation^,¹

Knoch¹,

Kremer²,

Schmidt³

et al. 1996

Organometallics

106

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Two routes are described for the synthesis of (η4-1,5-cyclooctadiene)(η6-phosphinine)iron(0) complexes. A three-component reaction of iron vapor with COD and 2-(trimethylsilyl)-4,5-dimethylphosphinine at low temperature yields 20% (COD)(2-(trimethylsilyl)-4,5-dimethylphosphinine)Fe(0) (3), whereas ligand exchange of one COD ligand of the in situ prepared metal vapor product (COD)2Fe by 2-(trimethylsilyl)-4,5-dimethylphosphinine or (η1-2-chloro-4,5-dimethylphosphinine)Cr(CO)5 gives corresponding (COD)(phosphinine)Fe(0) complexes in more than 80% isolated yield. As the phosphinine derivatives are prochiral, complexation leads to the racemate of two enantiomers. Both enantiomers are found in the unit cell of single crystalline 3 and are related by an inversion center. Complex 3 is a novel room-temperature catalyst for the [2 + 2 + 2] cyclic addition reaction of one molecule of butyronitrile with two molecules of methyl propargyl ether giving up to 160 mol of pyridine derivatives/mol 3. A chemically robust species, 3 is an air-stable crystalline material, but exposure to oxygen in solution causes slow decomposition.

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Section: Resultssupporting

confidence: 75%

Section: Resultssupporting

confidence: 72%

(η⁴-1,5-Cyclooctadiene)(η⁶-phosphinine)iron(0): Novel Room-Temperature Catalyst for Pyridine Formation^,¹

Knoch¹,

Kremer²,

Schmidt³

et al. 1996

Organometallics

106

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“…Phosphabenzenes with an intermediate degree of substitution, such as 4-cyclohexylphosphabenzene lb, react with Mo(CO), to give a u-n adduct (4b) [lO]. [12,13] and free phosphabenzenes [15,16]. However, the only u-complex for which a crystal structure has been reported is the 2,4,6-triphenylphosphabenzenechromium pentacarbonyl(5) related to 2a [16].…”

Section: Introductionmentioning

confidence: 99%

The molecular and crystal structure of pentacarbonyl(phosphabenzene)molybdenum(0)

Butler

Colburn

Abu‐Orabi

1985

Journal of Organometallic Chemistry

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Pentacarbonyl(phosphabenzene)molybdenum(O) crystallites in the Pbam space group with 2 = 8, a 15.880(4), b 20.162(4) and c 7.971(3) A. The crystal structure was determined and refined from 1404 independent reflections to R, = 0.034. The pentacarbonylmolybdenum moiety is symmetrically coordinated to the phosphorus atom of the phosphabenzene ring, which closely resembles the free ligand in geometry.

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Niederkoordinierte Phosphor-, Arsen-, Antimon- und Bismut-Mehrfachbindungssysteme als Komplexliganden

Scherer

1985

Angew. Chem.

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Professor Max Schmidt zum 60. Geburtstag gewidmet Isolierbare sowie am Metallzentrum erzeugte niederkoordinierte (Koordinationszahl eins bis drei) Mehrfachbindungssysteme des Phosphors und seiner Homologen sind vielseitige Liganden. Sie konnen a n Ubergangsmetallfragmenten als 2e-, 4e-, 6e-und 8e-Donor-Liganden fungieren und terminal(q'), side-on(q2), kanten-und/oder flacheniiberbriickend a n das (die) Metallatom(e) koordiniert sein. Das vielfach noch vorhandene (p-p)x-Bindungssystem der Liganden ist zu Additionen und intra-oder intermolekularen Cycloadditionen befahigt. Einige der dabei gebildeten Polycyclen sind neuartige, mehrzahnige Ligandensysteme.

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Structure of η⁵-cyclopentadienyl(η⁶-2,4,6-triphenylphosphorin)manganese(I)

Cited by 14 publications

References 8 publications

(η⁴-1,5-Cyclooctadiene)(η⁶-phosphinine)iron(0): Novel Room-Temperature Catalyst for Pyridine Formation^,¹

(η⁴-1,5-Cyclooctadiene)(η⁶-phosphinine)iron(0): Novel Room-Temperature Catalyst for Pyridine Formation^,¹

The molecular and crystal structure of pentacarbonyl(phosphabenzene)molybdenum(0)

Niederkoordinierte Phosphor-, Arsen-, Antimon- und Bismut-Mehrfachbindungssysteme als Komplexliganden

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Structure of η5-cyclopentadienyl(η6-2,4,6-triphenylphosphorin)manganese(I)

Cited by 14 publications

References 8 publications

(η4-1,5-Cyclooctadiene)(η6-phosphinine)iron(0): Novel Room-Temperature Catalyst for Pyridine Formation,1

(η4-1,5-Cyclooctadiene)(η6-phosphinine)iron(0): Novel Room-Temperature Catalyst for Pyridine Formation,1

The molecular and crystal structure of pentacarbonyl(phosphabenzene)molybdenum(0)

Niederkoordinierte Phosphor-, Arsen-, Antimon- und Bismut-Mehrfachbindungssysteme als Komplexliganden

Contact Info

Product

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Structure of η⁵-cyclopentadienyl(η⁶-2,4,6-triphenylphosphorin)manganese(I)

(η⁴-1,5-Cyclooctadiene)(η⁶-phosphinine)iron(0): Novel Room-Temperature Catalyst for Pyridine Formation^,¹

(η⁴-1,5-Cyclooctadiene)(η⁶-phosphinine)iron(0): Novel Room-Temperature Catalyst for Pyridine Formation^,¹