OLIGOMERIC CHROMIUM(III) POLICATION SPECIES-PILLARED LAYERED TETRATITANATES ANION

Hari Sutrisno; Endang Dwi Siswani

doi:10.22146/ijc.21706

OLIGOMERIC CHROMIUM(III) POLICATION SPECIES-PILLARED LAYERED TETRATITANATES ANION

https://doi.org/10.22146/ijc.21706

Hari Sutrisno^(1*), Endang Dwi Siswani⁽²⁾

(1) Department of Chemistry Education, Faculty of Mathematics and Natural Sciences, Yogyakarta State University (UNY), Karangmalang, Yogyakarta 55281
(2) Department of Chemistry Education, Faculty of Mathematics and Natural Sciences, Yogyakarta State University (UNY), Karangmalang, Yogyakarta 55281
(*) Corresponding Author

Abstract

Intercalation of oligomeric chromium(III) polycation species in layered tetratitanates was prepared by three steps: 1) ion-exchange of H⁺ for K⁺ in potasium tetratitanates, 2) intercalation of n-alchylamine (n-propylamine, n-butylamine, n-amylamine, and n-hexylamine) compounds in layered hydrogen tetratitanates by adding an aqueous solution of 5M n-alchylamine to hydogen titanates with stiring at room temperature, and 3) intercalation of oligomeric chromium(III) polycation species by mixing butylamine-intercalated tetratitanates with an aqueous solution of CrCl₃.6H₂O at pH various. The procedure was carried out by Chimie Douce method. The results showed that all of n-alchylamine-intercalated tetratitanates crystallize on monoclinic crystal system with the Bravais lattice C. The hight intensity of the first peaks (200) indicated that butylamine and amylamine-intercalated tetratitanates have a remarkably high crystallinity without impurities phase. The interlayered distance (d) and the lattice parameter projected along a increase with increasing the amount of C-atoms in n-alchylamine. At pH=1.3, [CrCl(H₂O)₅]²⁺ or [CrCl₂(H₂O)₄]⁺ species was pillared more efective in layered tetratitanates than [Cr(H₂O)₆]³⁺spesies and just one spesies, Cr(H₂O)₆]³⁺ at pH=1.7. On the contrary, [Cr(OH)(H₂O)₅]²⁺ or [Cr(OH)₂(H₂O)₄]⁺ was intercalated more effevtive than [Cr(H₂O)₆]³⁺ species at pH=5.3.

Keywords

tetratitanates; intercalation; oligomeric chromium(III) species; Chimie Douce

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DOI: https://doi.org/10.22146/ijc.21706