Synthesis and structural characterization of acetatobis(triphenylphosphine)dicarbonylmanganese(I), (CH3CO2)Mn(CO)2[P(C6H5)3]2: An organometallic complex containing a chelating acetate ligand
| Autor: | Lawrence F. Dahl, Gary L. Simon, W. K. Dean, Paul M. Treichel |
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| Rok vydání: | 1973 |
| Předmět: |
Ligand
Stereochemistry Organic Chemistry chemistry.chemical_element Manganese Biochemistry Medicinal chemistry Inorganic Chemistry Bond length Acetic acid chemistry.chemical_compound chemistry Octahedron Materials Chemistry Molecule Physical and Theoretical Chemistry Triphenylphosphine Monoclinic crystal system |
| Zdroj: | Journal of Organometallic Chemistry. 50:193-207 |
| ISSN: | 0022-328X |
| DOI: | 10.1016/s0022-328x(00)95106-4 |
| Popis: | The accidental but intriguing synthesis of acetatobis(triphenylphosphine)dicarbonylmanganese(I), (CH 3 CO 2 )Mn(CO) 2 [P(C 6 H 5 ) 3 ] 2 , has been accomplished by the reaction of NaMn(CO) 5 with (CH 3 ) 3 SiCl followed by the addition of triphenylphosphine and acetic acid. A three-dimensional single-crystal X-ray diffraction analysis has shown an octahedral-like molecule containing a symmetrically oxygen-chelating acetate group, the first such group to be reported in a metal carbonyl complex. The two triphenylphosphine ligands occupy mutually trans positions with the two carbonyl ligands possessing the remaining cis sites in the octahedral complex. The compound crystallizes with four molecules in a monoclinic unit cell of space group symmetry and of dimensions a = 17.744(2) A, b = 9.692(1) A, c = 20.004(2) A, and β = 106.195(4)°. The relatively long MnO(acetate) bond lengths [2.066(6) and 2.069(7) A] and the relatively short MnCO bond lengths [1.701(12) and 1.760(13) A] and the relatively short MnP(C 6 H 5 ) 3 bond lengths [2.260(3) and 2.275(3) A], compared to the corresponding MnCO and MnP(C 6 H 5 ) 3 bond lengths in other manganese carbonyl triphenylphosphine complexes, are rationalized on the basis that the acetate ligand in this molecule functions primarily as a σ-donor. |
| Databáze: | OpenAIRE |
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