Dinickel(Ii) Complexes with Pyridine-Substituted Bis(Triazolylmethyl)Amine Ligands: Structures and Magnetic Properties

22 Pages Posted: 23 Jul 2020

See all articles by Preeyanuch Sangtrirutnugul

Preeyanuch Sangtrirutnugul

Mahidol University

Vasut Nakarajouyphon

affiliation not provided to SSRN

Jeeranun Inthong

affiliation not provided to SSRN

Kwanchanok Udomsasporn

affiliation not provided to SSRN

Khamphee Phomphrai

affiliation not provided to SSRN

Nobuto Yoshinari

affiliation not provided to SSRN

Takumi Konno

affiliation not provided to SSRN

Abstract

Coordination behavior of newly prepared bis(triazolylmethyl)amine-type ligands, bis[(1-R-1H-1,2,3-triazol-4-yl)methyl]amine [R = CH2Ph (L1), CH2-2-pyridyl (L2)] and 1-(1-Benzyl-1H-1,2,3-triazol-4-yl)-N-((1-(pyridin-2-ylmethyl)-1H-1,2,3-triazol-4-yl)methyl)methanamine (L3), toward NiII ions was investigated. The reaction of NiCl2·6H2O with the benzyl-substituted bis(triazolylmethyl)amine ligand L1 afforded the mononuclear NiII complex Ni(L1)2Cl2 (1). On the other hand, the dinuclear NiII complexes, [Ni2(L2)2Cl2]Cl2 (2) and [Ni2(L3)2Cl2]Cl2 (3), were obtained when NiCl2·6H2O was reacted with the pyridine-substituted ligands, L2 and L3, respectively. Single-crystal X-ray analysis revealed that two octahedral NiII centers in 2 and 3 are bridged by two triazole rings through nitrogen donors to generate the dinuclear complexes with a syn arrangement. Meanwhile, treatment of Ni(NO3)2 with  L2 afforded the related dinickel(II) complex, [Ni2(L2)2(NO3)2](NO3)2 (2'), in which two non-bridging triazole rings and two nitrate ions were positioned in an anti arrangement. Complexes 2 and 3 showed the antiferromagnetic coupling between two NiII centers (S = 1), with J values following the trend: 2' > 2 > 3.

Keywords: Amine-triazole ligands, Bridging triazole, Dinickel complex, Antiferromagnetism

Suggested Citation

Sangtrirutnugul, Preeyanuch and Nakarajouyphon, Vasut and Inthong, Jeeranun and Udomsasporn, Kwanchanok and Phomphrai, Khamphee and Yoshinari, Nobuto and Konno, Takumi, Dinickel(Ii) Complexes with Pyridine-Substituted Bis(Triazolylmethyl)Amine Ligands: Structures and Magnetic Properties. Available at SSRN: https://ssrn.com/abstract=3658721

Preeyanuch Sangtrirutnugul (Contact Author)

Mahidol University ( email )

69 Vipawadee Rangsit Road
Phayatai, Bangkok, Nakhonpathom 10400
Thailand

Vasut Nakarajouyphon

affiliation not provided to SSRN

No Address Available

Jeeranun Inthong

affiliation not provided to SSRN

No Address Available

Kwanchanok Udomsasporn

affiliation not provided to SSRN

No Address Available

Khamphee Phomphrai

affiliation not provided to SSRN

No Address Available

Nobuto Yoshinari

affiliation not provided to SSRN

No Address Available

Takumi Konno

affiliation not provided to SSRN

No Address Available

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