Three cationic nonporous copper(I) coordination polymers containing bis-pyrazolyl flexible ligands have been prepared and characterized, namely, [Cu(μ-bdb)1.5](PF6)n (1), [Cu(μ-bpb)2](PF6)n (2), and [Cu(μ-bpmb)2](PF6)n (3) (bdb = 1,4-bis(3,5-dimethylpyrazolyl) methyl)benzene; bpb = 1,4-bis(pyrazolyl)butane; bpmb = 1,4-bis(pyrazolyl)methyl)benzene). All compounds were characterized by infrared, powder X-ray diffraction, elemental and thermal analyses, and single-crystal X-ray diffraction. Compound 1, with methyl-substituted pyrazolyl ligand, forms a chain of alternating rings and ribbons in which the copper(I) centers are three coordinated in distorted trigonal planar geometry. In compounds 2 and 3 copper(I) atoms adopt distorted tetrahedral geometries giving two-dimensional sheet structures with 44-sql topology. Interestingly, iodine sorption experiments show that colorless crystals of 2 and 3 remain unchanged in the presence of iodine vapors, while the three-coordinated compound 1 immediately absorbs iodine and turns dark. Anion exchange behavior of compounds 1 and 2 was also investigated both in solution and in the solid state.

Three Cationic: Nonporous CuI-Coordination Polymers: Structural Investigation and Vapor Iodine Capture / E. Baladi, V. Nobakht, A. Tarassoli, D.M. Proserpio, L. Carlucci. - In: CRYSTAL GROWTH & DESIGN. - ISSN 1528-7483. - 18:11(2018 Nov), pp. 7207-7218.

Three Cationic: Nonporous CuI-Coordination Polymers: Structural Investigation and Vapor Iodine Capture

D.M. Proserpio
Penultimo
;
L. Carlucci
Ultimo
2018-11

Abstract

Three cationic nonporous copper(I) coordination polymers containing bis-pyrazolyl flexible ligands have been prepared and characterized, namely, [Cu(μ-bdb)1.5](PF6)n (1), [Cu(μ-bpb)2](PF6)n (2), and [Cu(μ-bpmb)2](PF6)n (3) (bdb = 1,4-bis(3,5-dimethylpyrazolyl) methyl)benzene; bpb = 1,4-bis(pyrazolyl)butane; bpmb = 1,4-bis(pyrazolyl)methyl)benzene). All compounds were characterized by infrared, powder X-ray diffraction, elemental and thermal analyses, and single-crystal X-ray diffraction. Compound 1, with methyl-substituted pyrazolyl ligand, forms a chain of alternating rings and ribbons in which the copper(I) centers are three coordinated in distorted trigonal planar geometry. In compounds 2 and 3 copper(I) atoms adopt distorted tetrahedral geometries giving two-dimensional sheet structures with 44-sql topology. Interestingly, iodine sorption experiments show that colorless crystals of 2 and 3 remain unchanged in the presence of iodine vapors, while the three-coordinated compound 1 immediately absorbs iodine and turns dark. Anion exchange behavior of compounds 1 and 2 was also investigated both in solution and in the solid state.
Chemistry (all); Materials Science (all); Condensed Matter Physics
Settore CHIM/03 - Chimica Generale e Inorganica
9-ott-2018
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2434/600768
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