Abstract: A new three-dimensional open framework zinc nitrite {[Zn(NO_2)_3]~-·H_3O~+·H_2O}_n(Zn1) was synthesized by solvothermal method. The products was characterized by X-ray powder diffraction (XRD), IR spectra, Raman spectra, TG analysis and structurally determined by single-crystal X-ray diffraction analysis. The results indicated that the compound crystallizes in the trigonal symmetry, space group R-3c, with a=b=c=0.8814(6) nm, α=β=γ=55.51(2)°, V=2.0394(2) nm~3, Z=12, R_1=0.0325, wR_2=0.0829, GOF=1.077. The adjacent Zn centers are linked with O from NO_2~-to form 3-D structure of Zn1 containing 8-rings along [100] and [110] direction, respectively.

Key words: A new three-dimensional open framework zinc nitrite {[Zn(NO_2)_3]~-·H_3O~+·H_2O}_n(Zn1) was synthesized by solvothermal method. The products was characterized by X-ray powder diffraction (XRD), IR spectra, Raman spectra, TG analysis and structurally determined by single-crystal X-ray diffraction analysis. The results indicated that the compound crystallizes in the trigonal symmetry, space group R-3c, with a=b=c=0.8814(6) nm, α=β=γ=55.51(2)°, V=2.0394(2) nm~3, Z=12, R_1=0.0325, wR_2=0.0829, GOF=1.077. The adjacent Zn centers are linked with O from NO_2~-to form 3-D structure of Zn1 containing 8-rings along [100] and [110] direction, respectively.