Inclusion complex formation of diferrocenyldimethylsilane with beta-cyclodextrin

• Tipo: Artigo em Revista Científica Internacional
• Data: 2005

Autores

Fernandes, JA (Autor) Outra; Lima, S (Autor) Outra; Braga, SS (Autor) Outra; Ribeiro Claro, P (Autor) Outra; Rodriguez Borges, JE (Autor) FCUP; Teixeira, C (Autor) Outra; Pillinger, M (Autor) Outra; Teixeira Dias, JJC (Autor) Outra; Goncalves, IS (Autor) Outra

Revista

Título: Journal of Organometallic Chemistry

Vol. 690

Páginas: 4801-4808

ISSN: 0022-328X

Editora: Elsevier

Indexação

ISI Web of Knowledge - 23 Citações

Scopus - 24 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Química

Outras Informações

ID Authenticus: P-000-0R6

DOI: 10.1016/j.jorganchem.2005.07.073

Abstract (EN): An inclusion compound comprising P-cyclodextrin (P-CD) and diferrocenyldimethylsilane, Fc-SiMe2-Fc [Fc = (eta(5)-C5H5)Fe(eta(5)- C5H4)], has been prepared and characterized in the solid state by powder X-ray diffraction (XRD), thermogravimetric analysis (TGA) and magic angle spinning (MAS) NMR spectroscopy (C-13, Si-29). Elemental analysis indicated that the host:guest molar ratio in the product was approximately 1.5. Ab initio calculations in vacuo were carried out in order to investigate the possible inclusion modes. The first structure, designated form 2a, was determined assuming a barrel-type conformation, with parallel head-to-head cyclodextrins. A second V-shaped complex (2b) was also found by allowing variation of the angle between the cyclodextrins. Form 2a was assumed to be the best approximation to the real structure, since this geometrical arrangement favors the formation of a channel-type packing motif.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 8