title: Synthesis, spectroscopic and thermal investigations of solid charge-transfer complexes of 1,4,7-trimethyl-1,4,7-triazacyclononane and the acceptors iodine, TCNE, TCNQ and chloranil.
abstract: The solid charge-transfer complexes formed in the reaction of the electron donor 1,4,7-trimethyl-1,4,7-triazacyclononane (TMTACN) with the acceptors iodine, tetracyanoethylene (TCNE) and 7,7,8,8-tetracyanoquinodimethane (TCNQ) have been isolated. These were characterized through electronic and infrared spectra as well as thermal and elemental analysis. The results show that the formed solid CT-complexes have the formulas [(TMTACN)I]I3, [(TMTACN)(TCNE)5] and [(TMTACN)(TCNQ)3] in full agreement with the known reaction stoichiometries in solution. The chloranil CT-solid complex cannot be isolated in pure form.
authors.affiliation: Department of Chemistry and Earth Sciences, College of Arts and Sciences, Qatar University, P.O. Box 2713, Doha, Qatar. siham@qu.edu.qa
authors.forename: Siham Y
authors.initials: SY
authors.lastname: Alqaradawi
authors.forename: Hassan S
authors.initials: HS
authors.lastname: Bazzi
authors.forename: Adel
authors.initials: A
authors.lastname: Mostafa
authors.forename: El-Metwally
authors.initials: el-M
authors.lastname: Nour
mesh_terms: D001372:Aza Compounds / Q000737:chemistry*; D002703:Chloranil / Q000737:chemistry*; D005030:Ethylenes / Q000737:chemistry*; D007455:Iodine / Q000737:chemistry*; D008027:Light; D008956:Models, Chemical; D009570:Nitriles / Q000737:chemistry*; D009584:Nitrogen / Q000737:chemistry; D010777:Photochemistry / Q000379:methods; D013053:Spectrophotometry / Q000379:methods*; D013055:Spectrophotometry, Infrared / Q000379:methods; D013696:Temperature
chemical_list: C499747:1,4,7-trimethyl-1,4,7-triazacyclononane; D001372:Aza Compounds; D005030:Ethylenes; D009570:Nitriles; D002703:Chloranil; C013703:tetracyanoquinodimethane; D007455:Iodine; C003393:tetracyanoethylene; D009584:Nitrogen