New paper published. Congratullations!!

Single-crystal-to-single-crystal transformation and catalytic properties of new organically template perhalidometallates, Rayes, A.; Zárate-Roldán, S.; Ara, I.; Moncer, M.; Dege, N.; Gimeno, M. C.; Ayed, B.; Herrera, R. P. Catalysts 2021, 11, 758. https://doi.org/10.3390/catal11070758.

Abstract. Two new organic–inorganic salts of perhalidometallates with protonated organic amine cations have been synthesized and characterized by X-ray diffraction and thermal analysis. (CHBMAH2)ZnBr4·3/2H21 and (CHBMAH2)ZnCl44 [(CHBMAH2)2+: 1,3-cyclohexanebis(methylammonium)] were obtained in single-crystal form. The crystal packing in all of the obtained compounds is governed by the formation of various non-covalent intermolecular forces between tetrahalidometallate anions and organic cations, assisted by water molecules in the hydrates. Hirshfeld surface analysis denotes that the most important contributions to the crystal packing are X···H/H···X (X: Cl, Br, I) and H···H interactions. Interestingly, the compound 1,3-cyclohexanebis(methylammonium)tetrachloridozincate (II) dihydrate, (CHBMAH2)ZnCl4·2H22, undergoes thermally-triggered single-crystal-to-single-crystal (SCSC) transformation upon dehydration to produce a supramolecular solid compound, 1,3-cyclohexanebis(methylammonium) tetrachloridozincate (II), (CHBMAH2)ZnCl44. The SCSC transformation causes changes in the lattice parameters and a structural rearrangement. Furthermore, the catalytic properties of (CHBMAH2)ZnCl4·2H22 and (CHBMAH2)CdI4·2H23 have been explored in the acetalization process using various uncommon alcohols, beyond methanol or ethanol, for the first time in the literature, with outstanding results, and opening the door to the formation of alternative acetals.

Keywords: perhalidometallates; X-ray crystal structure; thermal analysis; Hirshfeld surface analysis; catalysis; acetalization

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