Syntheses and Structures of Two Reduced Open-framework Titanophosphates

Bulletin of the Korean chemical society

Yongnan Zhao¹  Young-Uk Kwon¹  Jianguo Yu¹ 

关键词: Hydrothermal synthesis;    Open-structure;    Single crystal structure;    Titanophosphate;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

Using metallic Ti powder as raw materials and 1,2-diaminocyclohexane (DACH) as the trial template, two novel reduced titanophosphate open-structures were hydrothermally isolated by varying the H3PO4/H2O ratio to adjust the pH value. TiPO-1 crystallizes in orthorhombic Pbca space group with cell parameters a = 21.956(3) A, b = 8.6268(11) A, c = 7.2883(9) A, V = 1380.5(3) A³, Z = 4. TiPO-2 crystallizes in triclinic space group P with parameters a = 5.1620(10) A, b = 8.815(2) A, c = 10.655(3) A, �? = 99.45o, �? = 102.94o, �? = 91.06o, V = 465.34 A³. TiPO-1 is constructed by infinite -Ti-O-Ti-O- linkage that is capped by PO4 groups to form a chain structure with protonated DACH molecules occupying the interchain spaces. TiPO-2 represents a rare 3-D reduced titanophosphate with 12-MR channels. The structure of TiPO-2 is a neutral framework with water molecules located in the channels.

【 授权许可】

Unknown