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首页> 外文期刊>Acta Crystallographica Section E: Crystallographic Communications >Crystal structure of 2-chloro-1,3-(2,6-diiso-propyl-phen-yl)-4,5-dihydro-1H-imidazol-3-ium tetra-kis-(3,5-tri-fluoro-methyl-phen-yl)borate
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Crystal structure of 2-chloro-1,3-(2,6-diiso-propyl-phen-yl)-4,5-dihydro-1H-imidazol-3-ium tetra-kis-(3,5-tri-fluoro-methyl-phen-yl)borate

机译:2-氯-1,3-(2,6-二异丙基-苯基-苯基)-4,5-二氢-1H-咪唑-3-基四-(3,5-三氟)的晶体结构-甲基-苯基-苯基)硼酸酯

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摘要

The title compound, C27H38ClN2+·C32H12BF24?, was synthesized by reacting the product formed from a previous reaction between 1,3-bis-(2,6-diiso-propyl-phen-yl)imidazolinium-2-carboxyl-ate (SIPrCO2), and SOCl2, with sodium tetra-kis-[3,5-bis-(tri-fluoro-meth-yl)phen-yl]borate (NaBARF). In the cation, the imidazole ring is in a half-chair conformation and the formerly carbene carbon atom is bonded in a distorted trigonal–planar geometry with N—C—Cl angles of 122.96?(16) and 122.21?(16)° and an N—C—N angle of 114.83?(18)°. In the crystal, weak C—H?F hydrogen bonds link the cations and anions, forming a three-dimensional network. In addition, a short Cl?F contact of 3.213?? and several short F?F contacts less than the sum of the van der Waals radii [1.47?? + 1.47?? = 2.94??] are observed. The F atoms of two of the CF3 groups were refined as disordered over four sets of sites.
机译:通过使由先前反应形成的1,3-双-(2,6-二异丙基-苯基-苯基)咪唑啉-2-羧酸酯(SIPrCO2)反应生成的产物合成标题化合物C27H38ClN2 +·C32H12BF24 ,以及四氯化三[3,5-双-(三氟甲基)苯基)基硼酸钠(NaBARF)。在阳离子中,咪唑环为半椅构型,以前的卡宾碳原子以扭曲的三角平面几何结构键合,NC角为122.96?(16)和122.21?(16)°, NC角为114.83°(18)°。在晶体中,较弱的CHF氢键将阳离子和阴离子连接起来,形成三维网络。另外,一个短的Cl13F触点为3.213Ω。并且几个短F?F触点小于范德华半径[1.47? + 1.47 ?? = 2.94 ??]。两个CF3基团中的F原子在四组位点上被无序化。

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