CuICuIIand AgI: P -isocyanobenzoates as novel 1D semiconducting coordination oligomers

Two novel semiconducting coordination oligomers with 1D chain structures, namely [H0.07 CuI0.65CuII0.14(μ-p-CNC6H4CO2)·0.9H2O]n and [Ag(μ-p-CNC6H4CO2)]n, were obtained and characterized by XRD powder patterns, and XPS, EPR, UV-vis-NIR, IR and Raman spectroscopy. According to XRD analysis, CuICuII-ICNBA is an amorphous solid, while AgI-ICNBA crystalizes with a monoclinic unit cell in the C2/c space group (Z = 4). The composition and further information of CuICuII-ICNBA were obtained from the spectroscopic data. In correspondence with the quantification of terminal groups from high-resolution XPS spectra, CuICuII-ICNBA and AgI-ICNBA are composed of an average of 9 and 7 monomer units, respectively, resulting in 1D-oligomers. The spectroscopic evidence indicates that CuICuII-ICNBA is better described as a non-stoichiometric coordination oligomer (where non-integer ratios of metal ions can be accommodated), while AgI-ICNBA is stoichiometric. In both materials, each metal center is linked by two μ-η1:η1-p-isocyanobenzoate ligands forming microfibers of around 120 nm (CuICuII-material) and 310 nm (AgI-material) in average diameters with optical band gaps of 2.60 eV and 2.17 eV, respectively. © 2020 The Royal Society of Chemistry.

Reguera L.1, 2, 3 , Cano A.1, 4 , Rodríguez-Hernández J.5 , Rivera D.G.2, 3 , Van Der Eycken E.V. , Ramírez-Rosales D.7 , Reguera E.1
Royal Society of Chemistry
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  • 1 Instituto Politécnico Nacional, Centro de Investigación en Ciencia Aplicada y Tecnología, Avanzada U. Legaria, Ciudad México, Mexico
  • 2 Laboratory for Organic and Microwave-Assisted Chemistry (LOMAC), Department of Chemistry, University of Leuven (KU Leuven), Belgium
  • 3 Universidad de la Habana, Facultad de Química, La Habana, Cuba
  • 4 Fermi National Laboratory, Batavia, IL 60510, United States
  • 5 Centro de Investigacion en Quimica Aplicada, Saltillo, Coahuila, Mexico
  • 6 Peoples Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya street, Moscow, 117198, Russian Federation
  • 7 Instituto Politécnico Nacional, Esfm, Ave. Instituto Politécnico Nacional S/N, Edif. 9 U.P. Zacatenco, Col. San Pedro Zacatenco, Mexico City, 07738, Mexico
Ключевые слова
Amorphous materials; Electron spin resonance spectroscopy; Energy gap; Metal ions; Metals; Oligomers; Silver halides; X ray diffraction; X ray photoelectron spectroscopy; Amorphous solids; Average diameter; IR and Raman spectroscopy; Monoclinic units; Non-stoichiometric; Powder patterns; Spectroscopic data; Spectroscopic evidence; Silver metallography
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