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Crystal Structure and Infrared Spectroscopy of Bis(2-hydrazinopyridine)palladium(ii) Chloride and its Isotopomers
Piotr
Drożdżewski A C,
Marta
Musiała A,
Maria
Kubiak B
A
Faculty of Chemistry, Wrocław University of Technology, 50-370 Wrocław, Poland.
B
Faculty of Chemistry, University of Wrocław, 50-383 Wrocław, Poland.
C
Corresponding author. Email: piotr.drozdzewski@pwr.wroc.pl
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Australian Journal of Chemistry 59(5) 329–335 http://dx.doi.org/10.1071/CH06097
Submitted: 23 March 2006
Accepted: 16 May 2006
Published online: 13 June 2006
Abstract
Two forms of [Pd(hypy)2]Cl2 complex have been prepared. The reaction of PdCl2 with 2-hydrazinopyridine (hypy) ligand carried out in DMF solution produces the title complex 1, whereas its recrystallization from methanol gives [Pd(hypy)2]Cl2·2MeOH 2. The latter compound was the subject of full, single-crystal X-ray analysis, which revealed the planar structure of the metal vicinity and trans-orientation of the ligands, chelating the metal through amine and pyridine nitrogen atoms. The vibrations of the complex cation [Pd(hypy)2]2+ were investigated using IR spectroscopy and DFT modelling employing the B3LYP functional and LanL2DZ basis set. The vibrations of the hydrazine moiety and palladium(ii) environment, detected by N-deuteration and 104Pd/110Pd stable isotope labelling, were also reproduced in the calculations.
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