The Choice of N-Phenyl-aza-15-crown-5 of Isopolymolybdate and Heteropolymolybdotungstate

Abstract

Abstract: To study the effect of cyclic compounds on the structure of polyoxometalates, twonew supermolecular complexes of [Na (N-Ph)aza-15C₅ (Et₂O) ]₂Na₂Mo₈O₂₆ (Ⅰ) and [Na (N-Ph) aza-15C5(Et₂O) ]₂Na₂W_0.25Mo_7.75O₂₆ were synthesized.Their structures were character-ized by IR, ¹HNMR, H,H-COSYand elementary analysis, and determined by fourcircle X-ray diffractometer.The parameters of crystal structure of supermolecule(Ⅱ) are: monoclin-ic, space group P2_1/c, a=1.7644(4) nm, b=l.3702(3) nm, c=1.4507(3) nm, P=114.02 (3) o, Z=2.The crystal consists of sodium N-phenyl-aza-1 -crown-5 complex cationsand two-dimensional network anions of [Na₂W_xMo_{8-x/sub>O₂₆]_∞^2-.In comparison with the previ-ous reports, it was found that there were some relationship between the structure of thecyclic compound and the polymerization of the polyoxometalates, and the occupation of theWand Mo atoms, and the distribution of Wand Mo atoms in crystal lattice.}

Key words: N-Phenyl-aza-15-crown-5, Octaoxometalate, Supermolecule, Crystal structure

CLC Number:

O614.61

TrendMD:

LU Xiao-Ming, ZONG Rui-Fa, LIU Shun-Cheng, JIN Xiang-Lin, LIU Yu. The Choice of N-Phenyl-aza-15-crown-5 of Isopolymolybdate and Heteropolymolybdotungstate[J]. Chem. J. Chinese Universities, 1997, 18(12): 1911.

References

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