Synthesis and characterization of [C5H5Fe(CO)2(ER3)]BF4 complexes (E = N, P, As, Sb and Bi): crystal structure determination of [C5H5Fe(CO)2(Bi(C6H5)3)]BF4

Autor:	Hans Schumann, Liliana Eguren
Rok vydání:	1991
Předmět:	Substitution reaction Chemistry Stereochemistry Bond strength Ligand Organic Chemistry Infrared spectroscopy Crystal structure Biochemistry Inorganic Chemistry Crystallography Homogeneous Atom Materials Chemistry Physical and Theoretical Chemistry Oxidative cleavage
Zdroj:	Journal of Organometallic Chemistry. 403:183-193
ISSN:	0022-328X
DOI:	10.1016/0022-328x(91)83099-p
Popis:	Group Vb donor ligands ER3 (E = N, P, As, Sb and Bi; R = CH3 C2H5, i-C2H7 and C6H5) react with [C5H5Fe(CO)2(THF)]BF4 under homogeneous or heterogeneous conditions to afford [C5H5Fe(CO)2(ER3BF4 complexes in good yields. Selected complexes of this type have also been obtained by oxidative cleavage of the FeFe bond in (Fe(C5H5)(CO)2]2 with the ferricenium cation [(C5H5)2Fe]+ in the presence of ER3. All the new complexes have been characterized by 1H, 13C, 31P NMR and IR spectroscopy; The complex [C5H5Fe(CO)2(Bi(C6H5)3)]BF4 has also been characterized by X-ray crystallography and shown to have a three-legged piano-stool geomety at the iron atom with a FeBi distance of 2.570(1) A. On the basis of NMR data, ligand substitution reactions, and comparison with results from the X-ray structures of related E(C6H5)3 complexes (E = P, As and Sb) it is concluded that the FeE bond strength decreases in the order P < As < Sb < N < Bi, this is discussed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c9f8ba0b8119a80ce09b6fa3b096a990 https://doi.org/10.1016/0022-328x(91)83099-p Zobrazit plný text záznamu