Interpenetrating 3D Framework Based on Inorganic Lanthanide Sulfate Rod Secondary Building Unit Involving In Situ Cleavage of a Sulfide–Sulfide Bond

Abstract

One novel two-fold interpenetrating 3D coordination polymer [Dy(L)(SO₄)(H₂O)] (1) (H₂L = 6-hydroxypyridine-3-carboxylic acid) has been synthesized and characterized by elemental analyses and single-crystal X-ray diffraction, respectively. Interestingly, L and sulfate anions came from the in situ cleavage of a sulfide–sulfide bond of the flexible 6,6′-dithiodinicotinic acid in the hydrothermal reactions. In the structure of 1, the L ligands connect the (–Dy–SO₄–)_∞ inorganic rod secondary building units to form a 3D (3,5)-connected (4².6⁵.8³)(4².6) net, interlocking the 3D network leads to a twofold parallel interpenetration network. In addition, thermal stability of 1 was also investigated.

Keywords:

• secondary building units
• in situ reaction
• network
• thermal stability

Supplementary Material

Crystallographic data for the structural analyses have been deposited to the Cambridge Crystallographic Data Center, CCDC No. 996159 Copies of this information may be obtained free of charge from The Director, CCDC, 12 Union Road, 265 Cambridge, CB2 1EZ, UK (Fax: [phone]; E-mail: [email protected], or http://www.ccdc.cam. ac.uk).