EPR on bis(1,2-dithiosquarato)cuprate(II) in the bis(1,2-dithiosquarato)nickelate(II) host lattice – structure and spectroscopy‡
-
Peter Strauch
,
Alexander Kossmann
EPR spectroscopy is a well suited analytical tool to monitor the electronic situation around paramagnetic metal centres as copper(II) and therefore the structural influences on the paramagnetic ion. 1,2-Dithiosquaratometalates are available by direct synthesis from metal salts with dipotassium-1,2-dithiosquarate and the appropriate counter cations. Synthesis and characterisation of bis(benzyltributylammonium)1,2-dithiosquaratonickelate(II), (BzlBu3N)2[Ni(dtsq)2], and bis(benzyltributylammonium)1,2-dithiosquaratocuprate(II), (BzlBu3N)2[Cu(dtsq)2], with benzyltributylammonium as the counter ion is reported and the X-ray structures of two complexes, (BzlBu3N)2[Ni(dtsq)2] and (BzlBu3N)2[Cu(dtsq)2], are presented. Both complexes, crystallising in the monoclinic space group P21/c, are isostructural with only small differences in the coordination sphere due to the different metal ions. The diamagnetic nickel complex is therefore well suited as a host lattice for the paramagnetic Cu(II) complex to measure EPR for additional structural information.
‡Presented at the XXV. International Conference on Coordination and Bioinorganic Chemistry, Smolenice, Slovakia, 31 May – 5 June 2015.
Acknowledgements.
The authors want to express their thanks to Ms Dr. Alette Winter and Ms. Dr. Ines Starke (University of Potsdam, Institute of Chemistry) for recording the EPR and mass spectra, respectively.
Supplementary data
Crystallographic data for the structures reported in this paper have been deposited with the Cambridge Crystallographic Data Centre, CCDC no. 1061144 and CCDC no. 1061145. Copies of the information may be obtained free of charge from: The Director, CCDC, 12 Union Road, Cambridge, CB21EZ, UK (fax: +44-1223-336033; e-mail: deposit@ccdc.cam.ac.uk or http://www.ccdc.cam.ac.uk/data_request/cif).
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© 2015 Institute of Chemistry, Slovak Academy of Sciences
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