title: Charge transfer complexes of picolines with sigma- and pi-acceptors.
abstract: In the present study CT complexes of 2-, 3- and 4-Picolines with (DDQ) 2, 3-dichloro-5, 6-dicyano parabenzoquinone (pi-acceptor) and (I2) Iodine (sigma-acceptor) have been investigated spectrophotometrically in three different solvents (CCl4, CHCl3 and CH2Cl2) at six different temperatures. The formation constants of the CT complexes were determined by the Benesi-Hildebrand equation. The thermodynamic parameters were calculated by Van(')t Hoff equation. The DeltaH degrees , DeltaG degrees and DeltaS degrees values are all negative implying that the formation of studied complexes is exothermic in nature.
authors: Chemistry Department, Quaid-i-Azam University, 45320 Islamabad, Pakistan. hunza_pk2@yahoo.com
authors: Humaira
authors: H
authors: Razzaq
authors: Rumana
authors: R
authors: Qureshi
authors: Naveed Kausar
authors: NK
authors: Janjua
authors: Farhat
authors: F
authors: Saira
authors: Samia
authors: S
authors: Saleemi
mesh_terms: D007477:Ions / Q000737:chemistry; D010847:Picolines / Q000737:chemistry*; D012997:Solvents / Q000737:chemistry; D013053:Spectrophotometry; D013816:Thermodynamics
chemical_list: D007477:Ions; D010847:Picolines; D012997:Solvents