title: Synthesis, spectroscopic, magnetic and thermal properties of bimetallic salts, [Ni(L)][MCl4] [where M=Co(II), Zn(II), Hg(II) and L=3,7-bis(2-aminoethyl)-1,3,5,7-tetraazabicyclo(3.3.1)nonane]. X-ray structure of [Ni(L)][CoCl4].
abstract: New bimetallic complex salts corresponding to the formulation [Ni(L)][MCl(4)] have been synthesized by the facile reaction between [Ni(L)](ClO(4))(2) and [MCl(2)(PPh(3))(2)] in high yields [where M=Co(II), Zn(II), Hg(II) and L=3,7-bis(2-aminoethyl)-1,3,5,7-tetraazabicyclo(3.3.1)nonane]. The complexes were characterized by IR, electronic spectra, TGA/DSC, magnetic moment and conductivity measurements. The X-ray crystal structure for [Ni(L)][CoCl(4)] clearly establishes the cationic-anionic interaction. It crystallizes in the space group P1 with unit cell dimensions a=7.1740(15)A, b=8.1583(16)A and c=8.3102(16)A. A square-planar geometry is evident for the [Ni(L)](2+) cation while the anion is found to be tetrahedral. A two-step thermolytic pattern is observed in the pyrolysis of the bimetallic complex salts.
authors.affiliation: Department of Kulliyat, Faculty of Unani Medicine, Aligarh Muslim University, Aligarh, India.
authors.forename: Shahab A A
authors.initials: SA
authors.lastname: Nami
authors.forename: Ahmad
authors.initials: A
authors.lastname: Husain
authors.forename: K S
authors.initials: KS
authors.lastname: Siddiqi
authors.forename: Barry L
authors.initials: BL
authors.lastname: Westcott
authors.forename: Kristin
authors.initials: K
authors.lastname: Kopp-Vaughn
mesh_terms: D002712:Chlorides / Q000737:chemistry; D018360:Crystallography, X-Ray; D004563:Electrochemistry / Q000379:methods; D008280:Magnetics; D008670:Metals / Q000737:chemistry*; D008958:Models, Molecular; D015394:Molecular Structure; D012492:Salts / Q000737:chemistry*; D013057:Spectrum Analysis / Q000379:methods*; D013816:Thermodynamics
chemical_list: D002712:Chlorides; D008670:Metals; D012492:Salts