Zirconium Phosphates of Variable Dimension Templated by Ethylene Diamine: Crystal Structures of 1-D [enH2][Zr(HPO4)3] and 2-D [enH2]0.5[Zr(PO4)(HPO4)]

✍ Scribed by Herman H-Y. Sung; Jihong Yu; Ian D. Williams

• Publisher: Elsevier Science
• Year: 1998
• Tongue: English
• Weight: 928 KB
• Volume: 140
• Category: Article
• ISSN: 0022-4596
• DOI: 10.1006/jssc.1998.7827

✦ Synopsis

Hydrothermal reaction of Zr(OPr) 4 with H 3 PO 4 in the presence of ethylene diamine and HF yields three crystalline phases; the 1-D [enH 2 ][Zr(HPO 4 ) 3 ], 1, which can grow as needles over 1 mm in length, the 2-D [enH 2 ] 0.5 [Zr(PO 4 )(HPO 4 )], 2, which is found as thin plates, and the previously reported fluorinated 3-D open-framework compound [enH 2 ] 0.5 [Zr 2 (PO 4 ) 2 (HPO 4 )F]. H 2 O, 3. The 1-D phase is the first of its type, with each Zr linked to neighboring metal atoms in the chain by three bridging phosphate groups via Zr-O-P-O-Zr linkages. Its crystals are monoclinic, space group C2/c, a ‫؍‬ 8.996(3), b ‫؍‬ 15.373(5), c ‫؍‬ 9.582(4) A s , ‫؍‬ 102.97(2)°, V ‫؍‬ 1287(1) A s 3 . Compound 2 is orthorhombic, space group Pnnm, a ‫؍‬ 24.087(4), b ‫؍‬ 5.381(1), c ‫؍‬ 6.660(1)A s , V ‫؍‬ 863.0(4) A s 3 . It is related to the 'double layer' sheet compound -ZrP and its ion exchanged analogues.