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首页> 外文期刊>Zeitschrift fur Naturforschung, B. A Journal of Chemical Sciences >Dimers (Al_2N_6)~(12-)and Chains _(infinity)~1 (AlN_(4/2)~(3-)) in the Crystal Structures of Ca_6(Al_2N_6) and Ba_3(Al_2N_4)
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Dimers (Al_2N_6)~(12-)and Chains _(infinity)~1 (AlN_(4/2)~(3-)) in the Crystal Structures of Ca_6(Al_2N_6) and Ba_3(Al_2N_4)

机译:Ca_6(Al_2N_6)和Ba_3(Al_2N_4)晶体结构中的二聚体(Al_2N_6)〜(12-)和链_(无穷大)〜1(AlN_(4/2)〜(3-))

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摘要

Pale yellow transparent single crystals of Ca_6[Al_2N_6] (P2_1/c, No. 14, a = 693.7 (3), b = 614.9 (3), c = 987.1 (5) pm, #beta# = 94.01 (5) deg; Z = 4) and colourless transparent single crystals of Ba_3[Al_2N_4] (Pnna, No.52, a = 617.9 (2), b = 1005.2 (4), c = 1023.0 (4) pm; Z = 4) were obtained from reactions of mixtures of the representative metals with nitrogen at T_(max) = 1000 deg C. The crystal structure of Ca_6[Al_2N_6] contains isolated units [Al_2N_6]~(12-) built of two edge-sharing tetrahedra. Ba_3[Al_2N_4] is an isotype of Sr_3[Al_2N_4]. The crystal structure contains infinite chains _(infinity)~1 [AlN_(4/2)~(3-)] of trans edge-sharing tetrahedra.
机译:浅黄色透明单晶Ca_6 [Al_2N_6](P2_1 / c,No.14,a = 693.7(3),b = 614.9(3),c = 987.1(5)pm,#beta#= 94.01(5)度; Z = 4)和Ba_3 [Al_2N_4]的无色透明单晶(Pnna,No.52,a = 617.9(2),b = 1005.2(4),c = 1023.0(4)pm; Z = 4)。 T_(max)= 1000℃时,代表金属与氮的混合物反应而得。Ca_6 [Al_2N_6]的晶体结构包含由两个边缘共享的四面体构成的孤立单元[Al_2N_6]〜(12-)。 Ba_3 [Al_2N_4]是Sr_3 [Al_2N_4]的同种型。晶体结构包含反边共享四面体的无限链_(无穷大)〜1 [AlN_(4/2)〜(3-)]。

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