
TY  - JOUR
A1  - Chen, Xiao-Ming 
A1  - Huang, Xiao-Chun 
A1  - Tong, Ming-Liang 
A1  - Tong, Ye-Xiang 
A1  - Ng, Seik Weng 
T1  - Synthesis and Crystal Structures of Two Monomeric Zinc(II) Complexes Containing Carboxylate and Aqua Ligands
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1997
VL  - 50
IS  - 8
SP  - 865
EP  - 868
KW  - 
UR  - https://doi.org/10.1071/C97019 
N2  - 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. 
ER  -

