Synthesis and structures of zinc alkoxo, aryloxo and hydroxo complexes with an amidodiamine ligand

Abstract The synthesis and characterization of zinc complexes bearing an amidodiamine ligand, (EtO) 4 Zn 3 [N(CH 2 CH 2 NMe 2 ) 2 ] 2 ( 1 ), [(Et 3 CO)ZnN(CH 2 CH 2 NMe 2 ) 2 ] 2 ( 2 ) and [(2,6- i Pr 2 C 6 H 3 O)ZnN(CH 2 CH 2 NMe 2 ) 2 ] 2 ( 3 ), [(Me 3 Si) 2 N]Zn[N(CH 2 CH 2 NMe 2 ) 2 ] ( 4 ) and [(Me 3 Si) 2 N] 2 Zn 2 (OH)[N(CH 2 CH 2 NMe 2 ) 2 ] ( 5 ), are reported. Compounds 1 – 3 are synthesised in the reactions of {Zn[N(CH 2 CH 2 NMe 2 ) 2 ] 2 } 2 with 2 equiv. of ethanol, 3-ethyl-3-pentanol and 2,6-diisopropylphenol, respectively. Compound 4 is obtained by the reaction of Zn[N(SiMe 3 ) 2 ] 2 with HN(CH 2 CH 2 NMe 2 ) 2 , and compound 5 is synthesised by reacting 4 with 1 equiv. of H 2 O. Compound 4 is characterized by NMR and MS while all of the other compounds are characterized with NMR, MS, elemental analysis and single-crystal X-ray diffraction. Compound 1 is a trinuclear species containing a Zn 3 N 2 O 2 core. Compounds 2 and 3 are dimeric with planar Zn 2 N 2 rings. Compound 5 is dimeric with a planar Zn 2 NO ring.