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Structurally characterized trinuclear nickel(II) and copper(II) Salamo-type complexes: syntheses, Hirshfeld analyses and fluorescent properties

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Two trinuclear Ni(II) and Cu(II) coordination compounds [{Ni(L1)(C2H5OH)}2(μ-OAc)2Ni]·2C2H5OH (1) and [{Cu(L2)(CH3OH)}2(μ-OAc)2Cu]·2CH3OH (2) constructed from asymmetrical Salamo-type ligands H2L1 and H2L2 (H2L1 = 5-(N,Nʹ-diethylamino)-2,2ʹ-[ethylenediyldioxybis(nitrilomethylidyne)]diphenol and H2L2 = 2,2ʹ-[ethylenediyldioxybis(nitrilomethylidyne)]naphtholphenol) were synthesized and characterized by physicochemical and spectroscopic methods. Complex 1 is a centrosymmetrical trinuclear Ni(II) coordination compound. Three hexa-coordinated Ni(II) atoms have slightly distorted octahedral geometries. Complex 2 contains three hexa-coordinated Cu(II) atoms bearing distorted octahedral geometries too. In addition, the thermal analyses and Hirshfeld surfaces analyses of complexes 1 and 2 have been discussed in detail.

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Fundings from the National Science Foundation (21761018) and the Program for Excellent Team of Scientific Research in Lanzhou Jiaotong University (201706) are gratefully acknowledged.

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Correspondence to Wen-Kui Dong.

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Zhang, Y., Liu, L., Peng, Y. et al. Structurally characterized trinuclear nickel(II) and copper(II) Salamo-type complexes: syntheses, Hirshfeld analyses and fluorescent properties. Transit Met Chem 44, 627–639 (2019).

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