caa a22 4500 463184831 CHVBK 20180406164849.0 cr unu---uuuuu 170326e20070801xx s 000 0 eng 10.1007/s10870-007-9212-y doi (NATIONALLICENCE)springer-10.1007/s10870-007-9212-y Synthesis and X-ray Crystal Structures of Two Luminescent Imidazopyridinium Derivatives from the Corresponding N-(aryl)-Pyridine-2-aldimines [Elektronische Daten] [Kamala Mitra, Subhendu Biswas, Shyamal Chattopadhyay, C. Lucas, Bibhutosh Adhikary] Syntheses and X-ray structural characterizations of two new luminescent imidazopyridinium derivatives, 2-(phenyl)-N(3)-(4(methyl)phenyl)-imidazo[1,5a] pyridinium perchlorate (1) and 2-(pyridyl)-N(3)-(4-(chloro)phenyl)-imidazo[1,5a] pyridinium perchlorate (2) are reported. The compounds are prepared in one step from N-(4-(methyl)phenyl) pyridine-2-aldimine and N-(4-(chloro)phenyl) pyridine-2-aldimine respectively in a transformation mediated by Mn(OAc)2-KMnO4 mixture. It is found that the molecular structures of the two compounds are similar. In the solid state, 1 forms a three-dimensional network through a series of hydrogen bonds between the cations and anions in the lattice while 2 forms a similar but less extensively linked network. The substitution of hydrogen at the 2-position of the imidazopyridinium ring by phenyl or 2-(pyridyl) affects the nature of their first excited states as detected by changes in their emission and absorption spectra. Springer Science+Business Media, LLC, 2007 Imidazopyridine nationallicence Manganese nationallicence Crystal structure nationallicence Emission spectra nationallicence Mitra Kamala Department of Chemistry, Bengal Engineering and Science University, Shibpur, 711 103, Howrah, India aut Biswas Subhendu Murshidabad College of Engineering and Technology, Cossimbazar Raj, 742102, Murshidabad, India aut Chattopadhyay Shyamal Department of Chemistry, Bengal Engineering and Science University, Shibpur, 711 103, Howrah, India aut Lucas C. Department of Chemistry, Memorial University of Newfoundland St. John's, A1B 3X7, Newfoundland, Canada aut Adhikary Bibhutosh Department of Chemistry, Bengal Engineering and Science University, Shibpur, 711 103, Howrah, India aut Journal of Chemical Crystallography Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 37/8(2007-08-01), 567-571 1074-1542 37:8<567 2007 37 10870 https://doi.org/10.1007/s10870-007-9212-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10870-007-9212-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Mitra Kamala Department of Chemistry, Bengal Engineering and Science University, Shibpur, 711 103, Howrah, India aut NATIONALLICENCE 700 1- Biswas Subhendu Murshidabad College of Engineering and Technology, Cossimbazar Raj, 742102, Murshidabad, India aut NATIONALLICENCE 700 1- Chattopadhyay Shyamal Department of Chemistry, Bengal Engineering and Science University, Shibpur, 711 103, Howrah, India aut NATIONALLICENCE 700 1- Lucas C. Department of Chemistry, Memorial University of Newfoundland St. John's, A1B 3X7, Newfoundland, Canada aut NATIONALLICENCE 700 1- Adhikary Bibhutosh Department of Chemistry, Bengal Engineering and Science University, Shibpur, 711 103, Howrah, India aut NATIONALLICENCE 773 0- Journal of Chemical Crystallography Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 37/8(2007-08-01), 567-571 1074-1542 37:8<567 2007 37 10870 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer