Publication Date:
2017-07-18
Description:
Three open-framework gallium phosphates [C 6 H 16 N 2 ][Ga(HPO 4 )(PO 4 )] ( 1 ), {H[C 6 H 16 N 2 ] 2 [Ga 7 (OH) 2 (PO 4 ) 8 ]} ( 2 ), and {H[C 4 H 12 N 2 ] 2 [Ga 7 (OH) 2 (PO 4 ) 8 ] · 2H 2 O} ( 3 ) were solvothermally synthesized in the presence of 2,6-dimethylpyrazine, N-ethylpiperazine, and piperazine as templates, respectively. Compound 1 possesses an infinite one-dimensional chain structure connected by hydrogen-bond interactions to generate a 3D supramolecular framework. Compounds 2 and 3 show similar inorganic framework structures, which may be viewed as the assembly of a secondary building unit (SBU), Ga 6 P 8 containing two GaO 4 , two GaO 5 , two GaO 6 as well as eight PO 4 groups. The SBUs are linked with each other by vertex-sharing oxygen atoms to form 2D sheets, which are further connected by GaO 4 tetrahedra to result in the final 3D open-framework with left- and right-handed helical chains. In these materials, the well-ordered organic species reside in the voids of structures and interact with the framework by way of hydrogen bonds.
Print ISSN:
0044-2313
Electronic ISSN:
1521-3749
Topics:
Chemistry and Pharmacology
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