The recently proposed high-yield synthesis of the 1,4-bis(5-tetrazolyl)benzene ligand (H2btb) allowed the preparation of three new metal organic frameworks, namely Ag2(btb), 1, Cu2(btb), 2, and Cu2(OH)2(btb), 3. These polycrystalline materials were fully characterised by spectroscopic, gas adsorption, thermal and diffraction methods, the latter revealing rather dense frameworks for 1 and 3. Despite many different synthetic approaches, 2 invariably gave a poorly resolved, but highly reproducible, powder diffraction trace, hampering a complete structural characterisation. Magnetic measurements performed on 3 showed that it behaves as an antiferromagnetic material, the r.t. magnetic moment per Cu atom being only 1.24μB. The reactivity of 1 was proved in excess of triphenylphosphine (PPh3), allowing the isolation of the dinuclear species 4, [(PPh3)3Ag]2(btb). An additional species 5, formulated as [(PPh3)Ag]2(btb), could be selectively isolated on varying the reaction conditions; at variance, pyrazine, in solution or in molten form, did not react with 1.

Metalorganic frameworks based on the 1,4-bis(5-tetrazolyl) benzene ligand: the Ag and Cu derivatives / A. Maspero, S. Galli, V. Colombo, G. Peli, N. Masciocchi, S. Stagni, E. Barea, J.A.R. Navarro. - In: INORGANICA CHIMICA ACTA. - ISSN 0020-1693. - 362:12(2009), pp. 4340-4346.

Metalorganic frameworks based on the 1,4-bis(5-tetrazolyl) benzene ligand: the Ag and Cu derivatives

V. Colombo;G. Peli;
2009

Abstract

The recently proposed high-yield synthesis of the 1,4-bis(5-tetrazolyl)benzene ligand (H2btb) allowed the preparation of three new metal organic frameworks, namely Ag2(btb), 1, Cu2(btb), 2, and Cu2(OH)2(btb), 3. These polycrystalline materials were fully characterised by spectroscopic, gas adsorption, thermal and diffraction methods, the latter revealing rather dense frameworks for 1 and 3. Despite many different synthetic approaches, 2 invariably gave a poorly resolved, but highly reproducible, powder diffraction trace, hampering a complete structural characterisation. Magnetic measurements performed on 3 showed that it behaves as an antiferromagnetic material, the r.t. magnetic moment per Cu atom being only 1.24μB. The reactivity of 1 was proved in excess of triphenylphosphine (PPh3), allowing the isolation of the dinuclear species 4, [(PPh3)3Ag]2(btb). An additional species 5, formulated as [(PPh3)Ag]2(btb), could be selectively isolated on varying the reaction conditions; at variance, pyrazine, in solution or in molten form, did not react with 1.
Metal organic frameworks ; Nitrogen ligands ; X-ray powder diffraction ; Tetrazolate
Settore CHIM/03 - Chimica Generale e Inorganica
2009
Article (author)
File in questo prodotto:
File Dimensione Formato  
ICA12673.pdf

accesso aperto

Tipologia: Publisher's version/PDF
Dimensione 676.29 kB
Formato Adobe PDF
676.29 kB Adobe PDF Visualizza/Apri
Pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/223282
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 20
  • ???jsp.display-item.citation.isi??? 19
social impact