Synthesis and crystal structures of decamethylferrocenium salts of anilate anions derived from bromanilic acid, chloranilic acid and cyananilic acid

✍ Scribed by Md.Badruz Zaman; Masaaki Tomura; Yoshiro Yamashita

• Publisher: Elsevier Science
• Year: 2001
• Tongue: English
• Weight: 251 KB
• Volume: 318
• Category: Article
• ISSN: 0020-1693
• DOI: 10.1016/s0020-1693(01)00411-x

✦ Synopsis

Four complexes were synthesized using bis(pentamethylcyclopentadienyl)iron Fe(C 5 Me 5 ) 2 as an organometallic donor and three anilic acids (2, BA, 2, CA and 2, CNA) as an organic acceptor. The molecular-based structures with different stoichiometric ratios [1:1, 1:1:1(H 2 O) and 2:1] of these complexes have been determined by X-ray crystallographic analysis and elemental analysis. These complexes have a one-dimensional alternated stacking arrangement as

Close contacts between the bromine atoms and oxygen atoms of the BA units are observed in the structure Fe(C 5 Me 5 ) 2 (1) of 1:1 composition. Interestingly, the structures Fe(C 5 Me 5 ) 2 (H 2 O) (2) and Fe(C 5 Me 5 ) 2 (H 2 O) (3) of 1:1:1(H 2 O) ratio contain one-dimensional molecular tape structures with the combination of the CA or the CNA units and water molecules via O-H•••O hydrogen bonds. Different stoichiometric ratios and structures are found from the CNA complexes Fe(C 5 Me 5 ) 2 (H 2 O) (3) and [Fe(C 5 Me 5 ) 2 ] 2 (CNA) (4).