Investigating the Formation of Different (NH 4) 2 [ M (H 2 O) 5 (NH 3 CH 2 CH 2 COO)] 2 [V 10 O 28 ]· n H 2 O (M = Co II , Ni II , Zn II , n = 4; M = Cd II , Mn II , n = 2) Crystallohydrates.

Autor:	Chrappová, Jana, Pateda, Yogeswara Rao, Bartošová, Lenka, Rakovský, Erik
Předmět:	CRYSTAL structure SPACE groups NUCLEAR magnetic resonance spectroscopy CARBON dioxide CRYSTALS
Zdroj:	Crystals (2073-4352); Aug2024, Vol. 14 Issue 8, p685, 13p
Abstrakt:	Three hybrid compounds based on decavanadates, i.e., (NH4)2[Co(H2O)5(β-HAla)]2[V10O28]·4H2O (1), (NH4)2[Ni(H2O)5(β-HAla)]2[V10O28]·4H2O (2), and (NH4)2[Cd(H2O)5(β-HAla)]2[V10O28]·2H2O (3), (where β-Hala = zwitterionic form of β-alanine) were prepared by reactions in mildly acidic conditions (pH ~ 4) at room temperature. These compounds crystallise in two structure types, both crystallising in monoclinic P21/n space group but with dissimilar cell packing, i.e., as tetrahydrates (1 and 2) and as a dihydrate (3). An influence of crystal radii and spin state of the central atom in [M(H2O)5(β-HAla)]2+ complex cations on the crystal packing leading to the formation of different crystallohydrate forms was investigated together with previously prepared (NH4)2[Zn(H2O)5(β-HAla)]2[V10O28]·4H2O (4) and (NH4)2[Mn(H2O)5(β-HAla)]2[V10O28]·2H2O (5) and spin states of [M(H2O)5(β-HAla)]2+ (M = Co2+, Ni2+, and Mn2+) cations in solution were confirmed by 1H-NMR paramagnetic effects. FT-IR and FT-Raman spectra for 1–5 are in agreement with the X-ray structure analysis results. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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