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A dirnethylamine-occluding galloarsenate,designated as GaAsO4-2,was prepared hydrothermally and determined structurally by single crystal X-ray diffraction technique. The compound crystallizes in nionoclinic space group P21/n with unit cell con-stants:a=18. 011(4),b=10. 466(4),c=19. 035(4)A ,β=113. 97(6)°,V= 3278. 81 A3,Dc =3. 06gcm-3,Z=4. The three-dimensional net of GaAsO4-2 constructed by Ga, As,O and F atoms has three kinds of open channels. One is formed by 10-T (T = Ga or As)rings packed along [010],the other two are formed by zigzag packing of 8-T rings a-long [100]and [001]. The dimethylamine molecules as templates are located inside the 10-T channels with their NH group pointing toward the channel wall.
A dirnethylamine-occluding galloarsenate, designated as GaAsO4-2, was prepared hydrothermally and determined structurally by single crystal X-ray diffraction technique. The compound crystallizes in nionoclinic space group P21 / n with unit cell constants: a = 18. 011 B = 10.466 (4), c = 19.035 (4) A, β = 113.97 (6) °, V = 3278. 81 A3, Dc = 3. 06gcm-3, Z = 4 The three-dimensional net of GaAsO4-2 constructed by Ga, As, O and F atoms has three kinds of open channels. One is formed by 10-T (T = Ga or As) rings packed along [010], the other two are formed by zigzag packing of 8-T rings a-long [100] and [001]. The dimethylamine molecules as templates are located inside the 10-T channels with their NH groups pointing toward the channel wall.