3D Ni(II)/Cu(II) Supermolecular Frameworks Based on Pyridylamine and Fumarate Co‐ligands Containing a Trinodal (4, 5, 6)‐Connected Network and a (H2O)16 Water Cluster. Issue 2 (8th January 2013)

• Record Type: Journal Article
• Authors: Kang, Yifan; Liu, Qing; Yin, Wenting; Zhang, Wentao; Liu, Ping
• Is Part Of: Chinese journal of chemistry. Volume 31:Issue 2(2013:Feb.)
• Page Start: 256
• Page End: 262
• Publication Date: 2013-01-08
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1002/cjoc.201200851
• Languages: English
• ISSNs: 1001-604X

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>Two new complexes, [Ni(dpypda)(H₂O)₃]·(fum) (<bold>1</bold>) and [Cu₂(dpypda)₂(fum)₂]_{<italic>n</italic>}·8<italic>n</italic>H₂O (<bold>2</bold>) (dpypda=<italic>N</italic>², <italic>N</italic>⁴‐di(pyridin‐2‐yl)pyrimidine‐2, 4‐diamine, fum=fumarate), have been synthesized and characterized by single‐crystal X‐ray diffraction. Complex <bold>1</bold> is a discrete unit, exhibiting a (4, 5, 6)‐connected framework formed by hydrogen bonding interactions and electrostatic interactions between free fum dianions and mononuclear [Ni(dpypda)(H₂O)₃]²⁺ cations. However, in complex <bold>2</bold>, two crystallographically independent fum dianions adopt the alternative mode of mixed monodentate bridging and chelating and bis(monodentate) bridging Cu(II) atoms to produce a one‐dimensional (1D) in?nite zigzag chain. And there are unique (H₂O)₁₆ water clusters which consist of one cyclic (H₂O)₄ tetramer and two cyclic (H₂O)₅ pentamer with six dangling water molecules in its 3D supramolecular framework. Both <bold>1</bold> and <bold>2</bold> are characterized by IR and elemental analysis, and the TG properties were also investigated for <bold>2</bold>.</p> </abstract>