Bis(triphenylphosphineoxide) manganese(III) chloride

manganese(III) chloride, bis(triphenylphopshine oxide)
Names
Systematic IUPAC name
trichloridobis(triphenylphopshineoxide)manganese(III)
Other names
MnCl3(OPPh3)2
Identifiers
3D model (JSmol)
  • InChI=1S/2C18H15OP.3ClH.Mn/c2*19-20(16-10-4-1-5-11-16,17-12-6-2-7-13-17)18-14-8-3-9-15-18;;;;/h2*1-15H;3*1H;/q;;;;;+3/p-3
    Key: QFCMPBNNKDBSLH-UHFFFAOYSA-K
  • [Mn+3].[Cl-].[Cl-].[Cl-].O=P(c1ccccc1)(c2ccccc2)c3ccccc3.O=P(c1ccccc1)(c2ccccc2)c3ccccc3
Properties
C36H30Cl3MnO2P2
Molar mass 717.87 g·mol−1
Appearance blue solid
Melting point 140 °C (284 °F; 413 K) (with decomposition)
μeff = 4.96 μB.H. (solid-state), 4.83 μB.H. (DCM)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Bis(triphenylphosphineoxide) manganese(III) chloride is a coordination complex of manganese(III) chloride. Unlike most compounds containing "Mn(III)Cl3", [MnCl3(OPPh3)2] can be stored under normal laboratory conditions.[1] It is a blue, paramagnetic solid.

Synthesis and reactions

Treatment of meta-stable solutions of Mn(III)Cl3 with triphenylphosphine oxide results in precipitation of solid [MnCl3(OPPh3)2]. This compound was first prepared using the thermally unstable ethereal adduct (dioxane)Mn(III)Cl3.[2] A convenient synthesis starts from Mn(OAc)2, trimethylsilylchloride, and potassium permanganate.[3]

[MnCl3(OPPh3)2] can be used as a starting material in coordination chemistry.[3]

[MnCl3(OPPh3)2] can also be used as a stoichiometric reagent in alkene dihalogenation reactions.[3]

References

  1. ^ Goedecke, Catharina (2022-09-08). "Bench-Stable Manganese(III) Chloride Source". ChemistryViews. Retrieved 2022-09-08.
  2. ^ Uson, R.; et al. (1976). "Pentacoordinate Neutral Manganese(III) Complexes". Transition. Met. Chem. 1 (3): 122–126.
  3. ^ a b c Saju, Ananya; Griffiths, Justin R.; MacMillan, Samantha N.; Lacy, David C. (2022-09-06). "Synthesis of a Bench-Stable Manganese(III) Chloride Compound: Coordination Chemistry and Alkene Dichlorination". Journal of the American Chemical Society. 144 (37): 16761–16766. Bibcode:2022JAChS.14416761S. doi:10.1021/jacs.2c08509. ISSN 0002-7863. PMID 36067378. S2CID 252110339.

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