Synthesis, characterization, and magnetic properties of a coordination polymer of nickel: poly[μ⁴-dicyanamide-(2,9-dimethyl-1,10-phenanthroline-κ²N,N′)nickel(II)]

Abstract

A new coordination polymer of Ni²⁺, (dicyanamide, herein denoted dca) and 2,9-dimethyl-1,10-phenanthroline (dmphen), has been synthesized, structurally and magnetically characterized. {[Ni₂(dmphen)₂[µ-dca]₄} _n (1), which crystallizes in the monoclinic space group P2₁ /n, has a 2-D network that consists of double-bridged [Ni₂(dca)₂(dmphen)₂]²⁺ “dimers” connected via single-bridging dca ligands and exhibits a typical (6, 3) topological network. Each NiN6 octahedron comprises a bidentate dmphen and four µ_1,5-bridging dca anions. Magnetic susceptibility measurements indicate antiferromagnetic interactions between Ni(II) ions via the dca bridge.

Keywords:

• Nickel(II) compound
• X-ray structure
• Magnetic property
• Dicyanamide
• 2,9-Dimethyl-1,10-phenanthroline

Acknowledgments

We are grateful for the Natural Science Foundation Council of China (NSFC) (grant No. 20401003) and 111 Project (B07012) for the financial support.