摘要:
A series of the first zinc(II) complexes of the general composition [Zn(L-n)(2)Cl-2]center dot xSolv (1-5) involving kinetin [N6-furfuryladenine, L-1, xSolv = CH3OH, complex 1] and its derivatives, i.e. N6-(5-methylfurfuryl)adenine (L-2, xSolv = 2H(2)O, 2), 2-chloro-N6-furfuryladenine (L-3, 3), 2-chloro-N6-(5-methylfurfuryl)adenine (L-4, 4) and 2-chloro-N6-furfuryl-9-isopropyladenine (L-5, 5), as N-donor ligands has been synthesized. The complexes have been fully characterized by elemental analyses (C, H, N), FTIR, Raman, H-1 and C-13 NMR spectroscopy, conductivity measurements, thermogravimetric (TG) and differential thermal (DTA) analyses. Single crystal X-ray analysis determined the molecular structures of 2-chloro-N6-furfuryl-9-isopropyladenine (L-5) and the complex [Zn(L-1)(2)Cl-2]center dot CH3OH. The Zn(II) ion is tetrahedrally coordinated by two chlorido ligands and two molecules of the L-1 organic compound. The two ligands L-1 are coordinated to the central Zn(II) ion via the N7 atoms. This conclusion can also be drawn from multinuclear NMR spectroscopic experiments. (C) 2010 Elsevier B.V. All rights reserved.