Elaboration of New Materials Using Hydrothermal Methods

Ursu, Daniel; Casut, Cristian; Miclău, Marinela

doi:10.3390/ma15217792

Cited by 2 publications

(1 citation statement)

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“…Compound (II), in which the C 6 H 8 N 2 organic molecule acts as a ligand (a Zn-N bond and a 1:1 Zn:P ratio) and (IV), in which the same organic species acts as a protonated C 6 H 9 N 2 + template (N-HÁ Á ÁO hydrogen bonds and a 3:4 Zn:P ratio) arose from similar syntheses, with the only difference being the source of zinc ions (zinc oxide and zinc acetate, respectively). Assuming that hydrothermal synthesis is not just an impenetrable 'black box' (Ursu et al, 2022), we may speculate that the acetate synthesis occurred at a lower pH, perhaps with some buffering action between acetic acid formed in situ and acetate ions, to allow for the protonation of the template.…”

Section: Database Surveymentioning

confidence: 99%

Consistent zincophosphite 4-ring `ladder' chain structural motif with isomeric ligands

et al. 2023

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The syntheses and crystal structures of four hydrothermally prepared organo–zinc phosphites, viz. poly[[(2-amino-3-methylpyridine)-μ3-phosphonato-zinc] hemihydrate], {[Zn(HPO3)(C6H8N2)]·0.5H2O} n , (I), poly[(2-amino-4-methylpyridine)-μ3-phosphonato-zinc], [Zn(HPO3)(C6H8N2)] n , (II), poly[(2-amino-5-methylpyridine)-μ3-phosphonato-zinc], [Zn(HPO3)(C6H8N2)] n , (III), and poly[bis(2-amino-4-methylpyridinium) [tetra-μ3-phosphonato-trizinc] monohydrate], {(C6H9N2)2[Zn3(HPO3)4]·H2O} n , (IV), are described. Compounds (I)–(III) are constructed from vertex-sharing ZnO3N tetrahedra (the organic molecule acting as a ligand) and HPO3 pseudo pyramids in a 1:1 ratio to generate the same motif of infinite 4-ring `ladder' chains propagating in the [010], [101] and [100] directions, respectively, whereas (IV) consists of (010) layers of vertex-sharing ZnO4 and HPO3 units in a 3:4 ratio with the protonated organic molecule acting as a template. When an excess of HCl is used in the synthesis, the simple hydrated molecular salt, bis(2-amino-3-methylpyridinium) tetrachlorozincate monohydrate, (C6H8N2)2[ZnCl4]·H2O, (V), arises. Compounds (I)–(V) feature extensive networks of hydrogen bonds, both classical (N—H...O, N—H...Cl, O—H...O) and non-classical (C—H...O, C—H...Cl) in nature, which help to consolidate the extended structures.

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Section: Database Surveymentioning

confidence: 99%