Mild hydrothermal synthesis, crystal structure, spectroscopic and magnetic properties of the [M=Fe, x=2.08, y=1.58; M=Co, Ni, x=2.5, y=2] compounds
作者:Joseba Orive、José L. Mesa、Estibaliz Legarra、Fernando Plazaola、María I. Arriortua、Teófilo Rojo
DOI:10.1016/j.jssc.2009.05.041
日期:2009.8
[MxIIM2.5-xIII(H2O)2(HPIIIO3)y(PVO4)2-yF] [M=Fe (1), x=2.08, y=1.58; M=Co (2), x=2.5, y=2; Ni (3), x=2.5, y=2] compounds have been synthesized using mild hydrothermal conditions at 170 °C during five days. Single-crystals of (1) and (2), and polycrystalline sample of (3) were obtained. These isostructural compounds crystallize in the orthorhombic system, space group Aba2, with a=9.9598(2), b=18.8149(4)
[MxIIM2.5-xIII(H 2 O)2(HPIIIO 3)y(PVO 4)2 -yF] [ M = Fe(1),x = 2.08,y = 1.58; M = Co(2),x = 2.5,y = 2; Ni(3),x = 2.5,y = 2]化合物已使用温和的水热条件在170°C下进行了五天的合成。获得了(1)和(2)的单晶以及(3)的多晶样品。这些同构化合物在正交系Aba 2空间群中结晶,其中a = 9.9598(2),b= 18.8149(4)和C ^ = 8.5751(2)一种(1),一个= 9.9142(7),b = 18.570(1)和C ^ = 8.4920(5)一种(2)和一个= 9.8038(2) ,对于(3),b = 18.2453(2)和c = 8.4106(1)Å,三相中Z = 8。X射线衍射研究表明,晶体结构由[ M O 5 F]和[ M O 4 F 2 ](M