Synthesis, Structure and Magnetic Properties of a Two- Dimensional Nickel(II) Coordination Polymer, {[Ni(pzdc)(pyz)].2H₂O}_n (H₂pzdc = pyrazine-23-dicarboxylic acid; pyz = pyrazine)

Takashi Okubo Department of Chemistry, Tokyo Metropolitan University, Minamiohsawa, Hachiouji, Tokyo, 192-03, Japan

Mitsuru Kondo Department of Chemistry, Tokyo Metropolitan University, Minamiohsawa, Hachiouji, Tokyo, 192-03, Japan

Satoshi Kawata Department of Chemistry, Tokyo Metropolitan University, Minamiohsawa, Hachiouji, Tokyo, 192-03, Japan

Susumu Kitagawa Department of Chemistry, Tokyo Metropolitan University, Minamiohsawa, Hachiouji, Tokyo, 192-03, Japan

Akira Miyazaki Department of Chemistry, Tokyo Institute of Technology, Meguro-ku, Tokyo, 152, Japan

Toshiaki Enoki Department of Chemistry, Tokyo Institute of Technology, Meguro-ku, Tokyo, 152, Japan

Abstract

A title compound has been synthesized and characterized. The complex crystallizes in the orthorhombic space group Cmcm with a = 7.004(2) Å, b = 12.748(2) Å, c = 13.665(2) Å, V = 1220.1(3) Å³ and Z = 4. The complex consists of two-dimensional square arrays of nickel(II) ions bridged by pzdc² and pyz ligands. Each nickel ion has a slightly distorted octahedral coordination with N₄O₂ chromopher. The magnetic susceptibility data over a range of 2–300 K were fitted by using an Heisenberg antiferromagnet with a mean field approximation. The obtained J and zJ' values are −1.70 cm⁻¹ and −0.70 cm⁻¹, respectively.

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Synthesis, Structure and Magnetic Properties of a Two- Dimensional Nickel(II) Coordination Polymer, {[Ni(pzdc)(pyz)].2H₂O}_n (H₂pzdc = pyrazine-23-dicarboxylic acid; pyz = pyrazine)

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Synthesis, Structure and Magnetic Properties of a Two- Dimensional Nickel(II) Coordination Polymer, {[Ni(pzdc)(pyz)].2H2O}n (H2pzdc = pyrazine-23-dicarboxylic acid; pyz = pyrazine)

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Synthesis, Structure and Magnetic Properties of a Two- Dimensional Nickel(II) Coordination Polymer, {[Ni(pzdc)(pyz)].2H₂O}_n (H₂pzdc = pyrazine-23-dicarboxylic acid; pyz = pyrazine)