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Synthesis, Structural and Thermal Studies of a New Nickel Complex Containing 2-Aminopyrimidine and Thiocyanate Mixed Ligands with a Three-Dimensional Network Structure

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Abstract

A new nickel(II) complex formulated as, trans-[Ni(amp)2(SCN)2(H2O)2]·2H2O (1), (amp = 2-aminopyrimidine) has been synthesized and characterized by elemental analysis, IR spectroscopy, its molecular and crystal structures were determined by X-ray crystal structure analysis and its thermal stability by TGA/DTA methods. 1 is a neutral complex and the central atom sits on an inversion center and is coordinated by two endocyclic nitrogen atoms of two 2-aminopyrimidine heterocycles, two oxygen atoms of two water molecules and two nitrogen atoms of SCN− ions. 2-aminopyrimidine molecules, thiocyanate ions and water molecules are in trans position. Thermal methods confirm two co-crystallized water molecules in 1. π–π stacking interactions and extensive O–H···O, O–H···N, O–H···S and N–H···N hydrogen bonds contribute to the formation of a three-dimensional supramolecular structure. Crystal data for complex at 120 K: triclinic, space group P-1, a = 7.2026(14), b = 7.8332(15), c = 9.0270(17) Å, α = 67.694(3), β = 72.732(4), γ = 77.012(4), Z = 1, R 1 = 0.0323.

Graphical Abstract

Trans-[Ni(amp)2(SCN)2(H2O)2]·2H2O (1), (amp = 2-aminopyrimidine) has been synthesized and, its molecular and crystal structures were determined by X-ray crystal structure analysis.

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Acknowledgments

The authors are grateful to Dr. Boris-Marko Kukovec for his valuable discussion. They also acknowledge Islamic Azad University, Yazd Branch, for the support of this work.

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Authors and Affiliations

  1. Department of Chemistry, Islamic Azad University Yazd Branch, Yazd, Iran

    Masoumeh Tabatabaee & Sania Saheli

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  1. Masoumeh Tabatabaee
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  2. Sania Saheli
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Correspondence to Masoumeh Tabatabaee.

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Tabatabaee, M., Saheli, S. Synthesis, Structural and Thermal Studies of a New Nickel Complex Containing 2-Aminopyrimidine and Thiocyanate Mixed Ligands with a Three-Dimensional Network Structure. J Chem Crystallogr 41, 670–673 (2011). https://doi.org/10.1007/s10870-010-9949-6

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  • DOI: https://doi.org/10.1007/s10870-010-9949-6

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