
%0 Journal Article
%A Chen, Xiao-Ming 
%A Huang, Xiao-Chun 
%A Tong, Ming-Liang 
%A Tong, Ye-Xiang 
%A Ng, Seik Weng 
%T Synthesis and Crystal Structures of Two Monomeric Zinc(II) Complexes Containing Carboxylate and Aqua Ligands
%J Australian Journal of Chemistry
%D 1997/10/14
%V 50
%N 8
%P 865-868
%K 
%R https://doi.org/10.1071/C97019
%U https://www.publish.csiro.au/paper/C97019 
%X Two monomeric zinc(II) complexes of betaine (Me3N+CH2CO2&#175; = bet), &#91;Zn(bet)2(H2O)Cl&#93; (ClO4) (1) and &#91;Zn(bet)3(H2O)&#93; (ClO4)2 (2), have been prepared and characterized by single-crystal structural analysis. The zinc atom in both complexes is coordinated in a distorted tetrahedral geometry: the zinc atom in complex (1) is surrounded by one aqua ligand (Zn&#8211;O 1&#183;979(3) &#197;), one chloro ligand (Zn&#8211;Cl 2&#183;218(1) &#197; ) and two monodentate carboxylate groups (Zn&#8211;O 1&#183;946(2) &#197;); the zinc atom in complex (2) is ligated by one aqua ligand (Zn&#8211;O 1&#183;997(6) &#197;) and three monodentate carboxylategroups (Zn&#8211;O 1&#183;943(5)&#8211;2&#183;106(8) &#197;). In both complexes, the aqua ligand forms strong donor hydrogenbonds with adjacent carboxylate oxygens (for complex (1), O &#183; &#183; &#183; O is 2&#183;689(2) &#197;; for complex (2), O &#183; &#183; &#183; O are 2&#183;67(1) and 2&#183;709(8) &#197;); these interactions are discussed in the context of zinc complexesand enzyme active sites. 
