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Hydrothermal Synthesis and Characterization of Chabazite-Type Cobaltoaluminophosphate with an Encapsulated Cobalt Complex: Co3Al3(PO4)6Co(DETA)2 · (H2O)3

✍ Scribed by Yao-Hua Xu; Zhi Yu; Xiao-Feng Chen; Shu-Hua Liu; Xiao-Zeng You

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
154 KB
Volume
146
Category
Article
ISSN
0022-4596

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✦ Synopsis

A chabazite-type cobaltoaminophosphate containing mixedvalence Co atoms with the encapsulated cobalt complex Co 3 Al 3 (PO 4 ) 6 Co(DETA) 2 ' 3(H 2 O) (DETA, diethyltriamine) has been hydrothermally synthesized and structurally determined. The compound with a chabazite structure crystallizes in the rhombohedral space group R3 with a ‫؍‬ 13.792(2) A > , c ‫؍‬ 14.997(4) A > , V ‫؍‬ 2470.6(9) A > 3 , and Z ‫؍‬ 2. The negative open framework contains Co II O 4 units and is disordered with AlO 4 units in the same position. The charge-balancing cations, [Co(DETA) 2 ] 3؉ , are located in the big cages. The compound was characterized by infrared spectroscopy, di4use re6ectance spectrocopy, X-ray photoelectron spectroscoy, and di4erential thermal analyses thermogravimetry. The results show that the compound can exist up to 3003C in N 2 .

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