Synthesis and physicochemical characterization of zinc(II) and cadmium(II) complexes with simple ligands

Abstract

In order to study the physicochemical properties of Zn II and Cd II complexes, complexes with ''simple'' supporting ligands were synthesized. Various coordination types were obtained, such as ZnN 2 S 2 in [Zn(SCH 2 CF 3 ) 2 (L)] (L = sp, ( ) )-sparteine or hp, homopiperazine), ZnN 2 O 2 in [Zn(OCH(CF 3 ) 2 ) 2 (sp)], ZnO 2 S 2 in (Et 4 N) 2 [Zn(OCH 2 (CF 2 ) 3 CH 2 O)(SCH 2 CF 3 ) 2 ], ZnN 3 S in [Zn(SR)(tacn iPr )](ClO 4 ) (tacn iPr = 1,4,7-triisopropyl-1,4,7-triazacyclononane; SR = 1-adamantanethiolate, SC 10 H 15 , 1-cyclohexanethiolate, SC 6 H 11 , or SCH 2 CF 3 ), CdN 3 S in [Cd(SC 10 H 15 )(tacn iPr )](ClO 4 ) and [Cd 3 (SCH 2 CF 3 ) 6 (tacn iPr ) 2 ]. The far-i.r., Raman and u.v.-vis. absorption spectra of the complexes are discussed, and the crystal structures of two of the complexes were determined.