Reactivity of the HoPc2I in the Acetylacetone (cas 123-54-6)–water system

Add time:09/28/2019    Source:sciencedirect.com

Reactivity of holmium diphthalocyanine with iodide HoPc2I in the acetylacetone/water system has been investigated. Depending on the water quantity in the system the solvothermal reaction of HoPc2I with acacH/water leads to formation of four different compounds. All these four compounds were obtained in the crystalline form. In equilibrium proportion of HoPc2I to water (molar proportion of 1:1) in excess of acacH the unique complex of [Ho(oPc)(acac)(OAc)]I·0.5(CH3COCH3) – (1) has been obtained. The neutral open phthalocyanine chelate ligand (oPc) is formed from phthalocyaninate ligand in sequence of numerous processes. The oPc chelate ligand shows alternate single and double bonds due to presence of imine bridge (NH). The imine bridge breaks the π-delocalisation within the whole oPc chelate ligand. The sequence of single and double bonds in the oPc ligand has been confirmed by DFT calculations. Increasing of water quantity in the reacting system leads to formation of three different holmium acetates: anhydrous holmium acetate Ho(CH3COO)3 – 2, bis(holmiumacetate) monohydrate [Ho(CH3COO)3]2·H2O – 3 and bis[holmium(diacetate)(triaqua)iodide] monohydrate [Ho(CH3COO)2(H2O)3I]2·H2O – 4. These three holmium acetates differ in the amount of water and have different structures.

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