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Crystal Structure of Tricarbonyl‐[2,3‐η: O ‐σ‐(7,7‐dimethoxy‐5,6‐dimethylidenebicyclo[2.2.1]hept‐2‐ene)]iron
Author(s) -
Barbay Yvan,
Ioset Jacques,
Roulet Raymond,
Chapuis Gervais
Publication year - 1986
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19860690123
Subject(s) - chemistry , monoclinic crystal system , ligand (biochemistry) , crystallography , crystal structure , metal , ene reaction , group (periodic table) , stereochemistry , trigonal bipyramidal molecular geometry , bond length , atom (system on chip) , medicinal chemistry , organic chemistry , biochemistry , receptor , computer science , embedded system
The product of the reaction of [Fe(benzalacetone)(CO) 3 ] with 7,7‐dimethoxy‐5,6‐dimethylidenebicyclo[2.2.1] hept‐2‐ene is tricarbonyl‐[2,3‐η: O ‐σ‐(7,7‐dimethoxy‐5,6‐dimethylidenebicyclo [2.2.1]hept‐2‐ene)]iron. Crystals are monoclinic, space group P 2 1 / c with a = 6.612(2), b = 11.610(4), c = 18.604(6) Å, and β = 95.91(2)°. The coordination at the metal atom is trigonal bipyramidal. The equatorial sites are occupied by 2 CO's and by the midpoint of the endocyclic double bond of the organic ligand. The axial sites are occupied by one CO group and the O‐atom of one MeO group of the C(OMe) 2 bridge. It is an uncommon example of a d 8 metal carbonyl complex bearing an O‐bonded ligand.