Supramolecular compounds with coordination polymeric chains of Ag ions, p -sulfonatocalix[4]arene and ethylenediamine

Complexes (en) 0.5 [{Ag 2 (en) 2 }{Ag 4 (en) 4 } 2 (SC4) 2 ]·17H 2 O( 1 ) and [Ag 5 (en) 5 (H 2 O) 2 ][Ag 8 (en) 8 (H 2 O) 2 (SC4) 2 ][Na(H 2 O) 4 ][Na 6 (H 2 O) 16 (SC4) 2 ]·50H 2 O ( 2 ), SC4 = p -sulfonatocalix[4]arene pentaanion, en = ethylenediamine, were synthesized from sodium p -sulfonatocalix[4]arene (Na 4 SC4), Ag + ions in aqueous solution of pH = 11 at room temperature. Single-crystal structures were determined by X-ray diffraction. In 1 , two 20-membered macrocycles consisting of four Ag + ions and four en molecules are combined together by weak Ag–Ag metal bonds in which the Ag + ions are coordinated by sulfonate oxygen atoms of SC4 with a weak Ag–O interaction. Two Ag + ions in a ten-membered ring, Ag 2 (en) 2 , link two hydroxyl oxygen atoms of two SC4, forming a chain extending along the a -axis. In 2 four Ag + ions and four en molecules form a chain with SC4 as pendants through Ag–O interaction. Another SC4 coordinates to three Na + ions, forming a Na 3 -SC4-H 2 O chain through sharing a water molecule. The third chain is formed by three Ag + ions and three en molecules. These chains stretch towards different directions forming a 3D supramolecular architecture stabilized by hydrogen bonds.