title: A study of adduct formation of heterocyclic nitrogen bases with nickel(II) chelate of di(6-chloro-2-methylphenyl)carbazone.
abstract: The study of the adduct formation of Ni(II) di(6-chloro,2-methylphenyl)carbazonate has been undertaken by synthesising and characterizing it by magnetic susceptibility, UV-VIS, IR and 1H-NMR spectral measurements. The distorted square planar Ni(II) chelate forms adducts with heterocyclic nitrogen bases; spectrophotometric method has been employed for the study of the adduct formation in a monophase chloroform. Both bidentate and unsaturated monodentate heteronuclear nitrogen bases form hexacoordinated adducts with 1:1 and 1:2 stoichiometry, respectively (metalchelate:base). However, the saturated nitrogen bases form pentacoordinated adducts with 1:1 stoichiometry. The results are discussed in terms of basicity and steric factors of the bases.
authors.affiliation: Department of Chemistry Karnatak University, Dharwad, India. karuni@bgl.vsnl.net.in
authors.forename: A H
authors.initials: AH
authors.lastname: Siddalingaiah
authors.forename: A F
authors.initials: AF
authors.lastname: Dodamani
authors.forename: P S
authors.initials: PS
authors.lastname: Kanavi
mesh_terms: D002614:Chelating Agents / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy; D009532:Nickel / Q000737:chemistry; D009942:Organometallic Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D012664:Semicarbazones / Q000138:chemical synthesis / Q000737:chemistry*; D013055:Spectrophotometry, Infrared / Q000379:methods*; D014638:Vanadates / Q000737:chemistry*
chemical_list: D002614:Chelating Agents; D009942:Organometallic Compounds; D012664:Semicarbazones; C424689:bis(di(6-chloro-2-methylphenyl)carbazonate)nickel(II); C424688:di(6-chloro-2-methylphenyl)carbazone; D014638:Vanadates; D009532:Nickel