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]
| Autor: | Barry L. Westcott, Ahmad Husain, Khwaja Salahuddin Siddiqi, Kristin M. Kopp-Vaughn, Shahab A.A. Nami |
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| Rok vydání: | 2010 |
| Předmět: |
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Molecular Molecular Structure Magnetic moment Chemistry Spectrum Analysis X-ray Crystal structure Conductivity Crystallography X-Ray Atomic and Molecular Physics and Optics Analytical Chemistry Ion Magnetics Crystallography chemistry.chemical_compound Chlorides Metals Electrochemistry Thermodynamics Salts Nonane Instrumentation Bimetallic strip Pyrolysis Spectroscopy |
| Zdroj: | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy. 75:444-447 |
| ISSN: | 1386-1425 |
| DOI: | 10.1016/j.saa.2009.11.004 |
| Popis: | New bimetallic complex salts corresponding to the formulation [Ni(L)][MCl4] have been synthesized by the facile reaction between [Ni(L)](ClO4)2 and [MCl2(PPh3)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)][CoCl4] 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. |
| Databáze: | OpenAIRE |
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