Synthesis and structure of the new gallophosphate Mu-6 containing a gallium organic complex as part of the framework

✍ Scribed by P. Reinert; J. Patarin; B. Marler

• Publisher: Elsevier Science
• Year: 1998
• Tongue: English
• Weight: 522 KB
• Volume: 35
• Category: Article
• ISSN: 0992-4361
• DOI: 10.1016/s0992-4361(98)80434-7

✦ Synopsis

A new gallophosphate was synthesized in aqueous medium using the macrocycle 1,4,8,11-tetraazacyciotetradecane as organic species. The structure was determined by single crystal X-ray diffraction. The symmetry is monoclinic, space group C2/c, a=0.8842(3)nm, b=l.7781(2)nm, c=1.5805(3)nm, 13= 92.05(3) °. The structure consists of gallophosphate chains of gallium-corner-sharing Ga2P204 four-rings. Each chain is connected to the others via a gallium-organic complex leading to a three dimensional framework. This new gailophosphate shows low thermal stability, a complete amorphization being observed after calcination at 350°C. The results of ~3C and 31p solid state nmr spectroscopy are in agreement with the structure analysis.