Abstract
Two three-dimensional pillar-layer Ag(I)-frameworks with helical arrays have been synthesized under room temperature. Compound I, {[Ag(2) (H(2)O) (L2)(2)L1]center dot H(2)O}(n) L(1) = hexamethylenetetramine, H(1)L2 = 3-Pyridinesulfonic acid), is constructed from two-dimensional (6,3) layers which are braced by helical arrays; Compound II, {[Ag(3)(L1)(2)(L3)]center dot 6H(2)O}(n) (H(3)L3 = citric acid), is created by two-dimensional layers which are made up of the mix-helical arrays and further pillared by L3 anions and Ag ions. Compound I and compound II have been characterized by single-crystal X-ray structure determination, powder X-ray diffraction, IR and TGA. Also, the water and methanol adsorption isotherms for Compound II have been studied. (C) 2010 Elsevier B.V. All rights reserved.
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