EPR on bis(1,2 dithiosquarato)cuprate(II) in the bis(1,2 dithiosquarato)nickelate(II) host lattice structure and spectroscopy+
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.
Chemical Papers