A new polar supramolecular 3D framework [Zn(pyz)(H2O)4]%pht

A new Zn(II) complex, [Zn(pyz)(H2O)4]%pht (1) (pyzZpyrazine; phtZ1,2-benzenedicarboxylate) has been hydrothermally synthesized and characterized. Complex 1 features a novel polar 3D framework with a 1D polycationic chain ½ZnðpyzÞðH2OÞ4 2nC n , between which pht2K dianions are encapsulated via the supramolecular interaction. Its powder SHG is of about three times as large as that of KH2PO4. q 2005 Elsevier B.V. All rights reserved