REACTIONS OF 1-3-η-ALLYL-MANGANESE AND -RHENIUM TETRACARBONYLS WITH PHOSPHINES, PHOSPHITES, AND TRIPHENYLARSINE. THE CRYSTAL AND MOLECULAR STRUCTURE OF 1-3-η-ALLYLDICARBONYLBIS(TRIMETHYL PHOSPHITE)MANGANESE(I)

Article abstract of DOI:10.1039/DT9800002129

The complexes n3, or PMePh2; M=Re, L=PPh3> and have been prepared from using thermal or photolytic methods.Taking the allyl group as bidentate, the complexes are considered to possess pseudo-octahedral stuctures, the carbonyl ligands being facial in the tricarbonyls and cis in the dicarbonyls.The 1H NMR spectra are characteristic of η³-allyl species and show strong 1H-31P coupling.The mass spectra of the complexes have also been obtained and fragmentation pathway suggested mainly on the basis of observed metastable peaks.Crystals of are monoclinic with a=18.618(11), b=9.218(7), c=10.607(11), β=102.1(1) deg, Z=4, and space group P2₁/a. 1 742 Independent reflections above background have been collected on a diffractometer and refined to R 0.059.The metal atom has a distorted octahedral environment, being bonded to two mutually trans phosphorus atoms, two cis carbonyls , and an allyl group .

Full text of DOI:10.1039/DT9800002129

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