Lipophilic strontium and calcium alkyls, amides and phenoxides; X-ray structures of the crystalline square-planar [{trans-Sr(NR′2)2(µ-1,4-dioxane)}∞] and tetrahedral [CaR2(1,4-dioxane)2]; R′= SiMe3, R = CH(SiMe3)2]
Lipophilic strontium and calcium alkyls, amides and phenoxides; X-ray structures of the crystalline square-planar [{trans-Sr(NR′2)2(µ-1,4-dioxane)}∞] and tetrahedral [CaR2(1,4-dioxane)2]; R′= SiMe3, R = CH(SiMe3)2]
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亲脂性锶和钙烷基、酰胺和酚盐；4-二恶烷)2]；
DOI：
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发表时间：
1991
期刊：
影响因子：
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通讯作者：
B. Royo
中科院分区：
文献类型：
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作者：
F. Cloke;P. Hitchcock;M. Lappert;G. A. Lawless;B. Royo
在环境温度下，用 ArOH (Ar = C6H2But3-2,4,6) 或 HNR'2 在四氢呋喃中处理自燃锶粉末，分别得到结晶 [Sr(OAr)2(THF)4] 或 [Sr(NR'2)2(THF)2]3，并用 1,4-二恶烷 3 得到结晶[{反式-Sr(NR′2)2(μ-1,4-二恶烷)}∞]4;钙蒸气和 RBr 在 THF 中于 77 K 共缩合得到 [CaR2(THF)3]5，其与 1,4-二恶烷一起得到 [CaR2(1,4-二恶烷)2]6； X 射线结构揭示碱土金属环境对于 4[Sr-N 2.449(7), Sr-O 2.533(9)A] 是方形平面，但对于 6[Ca-C 2.483(5), Ca-O 2.373(4)A] 是四面体，其中二恶烷作为桥联二齿 4 或单齿 6 配体。
Treatment of pyrophoric strontium powder in tetrahydrofuran with ArOH (Ar = C6H2But3-2,4,6) or HNR′2 at ambient temperature affords crystalline [Sr(OAr)2(THF)4] or [Sr(NR′2)2(THF)2]3, respectively, and 3 with 1,4-dioxane yields crystalline [{trans-Sr(NR′2)2(µ-1,4-dioxane)}∞]4; co-condensation of calcium vapour and RBr in THF at 77 K affords [CaR2(THF)3]5, which with 1,4-dioxane gives [CaR2(1,4-dioxane)2]6; X-ray structures reveal the alkaline earth metal environment to be square-planar for 4[Sr-N 2.449(7), Sr-O 2.533(9)A] but tetrahedral for 6[Ca-C 2.483(5), Ca-O 2.373(4)A] with dioxane as a bridging bidentate 4 or monodentate 6 ligand.