The author of 《Syntheses and crystal structures of a new family of hybrid perovskites: C5H14N2·ABr3·0.5H2O (A = K, Rb, Cs)》 were Ferrandin, Sarah; Slawin, Alexandra M. Z.; Harrison, William T. A.. And the article was published in Acta Crystallographica, Section E: Crystallographic Communications in 2019. Quality Control of 1-Methylpiperazine The author mentioned the following in the article:
The syntheses and crystal structures of three hybrid perovskites, viz. poly[1-methylpiperizine-1,4-diium [tri-μ-bromido-potassium] hemihydrate], {(C5H14N2)[KBr3]·0.5H2O}n, (I), poly[1-methylpiperizine-1,4-diium [tri-μ-bromido-rubidium] hemihydrate], {(C5H14N2)[RbBr3]·0.5H2O}n, (II), and poly[1-methylpiperizine-1,4-diium [tri-μ-bromido-caesium] hemihydrate], {(C5H14N2)[CsBr3]·0.5H2O}n, (III), are described. These isostructural (space group Amm2) phases contain a three-dimensional, corner-sharing network of distorted ABr6 octahedra (A = K, Rb, Cs) with the same topol. as the classical perovskite structure. The doubly protonated C5H14N22+ cations occupy interstices bounded by eight octahedra and the water mols. lie in square sites bounded by four octahedra. N-H···Br, N-H···(Br,Br), N-H···O and O-H···Br hydrogen bonds consolidate the structures. The experimental part of the paper was very detailed, including the reaction process of 1-Methylpiperazine(cas: 109-01-3Quality Control of 1-Methylpiperazine)
1-Methylpiperazine(cas: 109-01-3) can be used as mimic template in the preparation of molecularly imprinted microspheres (MIMs). It was also used to prepare the difunctional strong anion-exchange stationary phase from a 1,4-diazacyclohexane derivative..Quality Control of 1-Methylpiperazine
Referemce:
Piperazine – Wikipedia,
Piperazines – an overview | ScienceDirect Topics