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首页> 外文期刊>Acta Crystallographica Section E: Crystallographic Communications >Investigations of new potential photo-acid generators: crystal structures of 2-[(E)-2-phenyl­ethen­yl]phenol (ortho­rhom­bic polymorph) and (2E)-3-(2-bromo­phen­yl)-2-phenyl­prop-2-enoic acid
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Investigations of new potential photo-acid generators: crystal structures of 2-[(E)-2-phenyl­ethen­yl]phenol (ortho­rhom­bic polymorph) and (2E)-3-(2-bromo­phen­yl)-2-phenyl­prop-2-enoic acid

机译:新的潜在光产酸剂的研究:2-[((E)-2-苯基乙烯基]苯酚(斜方晶型)和(2E)-3-(2-溴苯基)-2-苯基丙-2-烯酸的晶体结构

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The title compounds, C14H12O, (I), and C15H11BrO2, (II), were prepared and characterized as part of our studies of potential new photo-acid generators. In (I), which crystallizes in the ortho­rhom­bic space group Pca21, compared to P21 for the previously known monoclinic polymorph [Cornella & Martin (2013). Org. Lett. 15, 6298–6301], the dihedral angle between the aromatic rings is 4.35 (6)° and the OH group is disordered over two sites in a 0.795 (3):0.205 (3) ratio. In the crystal of (I), mol­ecules are linked by O—H⋯π inter­actions involving both the major and minor –OH disorder components, generating [001] chains as part of the herringbone packing motif. The asymmetric unit of (II) contains two mol­ecules with similar conformations (weighted r.m.s. overlay fit = 0.183 Å). In the crystal of (II), both mol­ecules form carboxyl­ate inversion dimers linked by pairs of O—H⋯O hydrogen bonds, generating R22(8) loops in each case. The dimers are linked by pairs of C—H⋯O hydrogen bonds to form [010] chains.
机译:制备了标题化合物C14H12O(I)和C15H11BrO2(II),并将其表征为我们对潜在的新型光酸产生剂的研究的一部分。在(I)中,它在正交晶空间群Pca21中结晶,与先前已知的单斜晶型多晶型物的P21 / n相比[Cornella&Martin(2013)。单位来吧15,6298–6301],芳香环之间的二面角为4.35(6)°,OH基团在两个位置上以0.795(3):0.205(3)的比率无序排列。在(I)的晶体中,分子通过涉及主要和次要-OH紊乱成分的O-H⋯π相互作用连接,产生了[001]链,作为人字形填充图案的一部分。 (II)的不对称单元包含两个具有相似构象的分子(加权r.m.s.重叠拟合= 0.183Å)。在(II)的晶体中,两个分子均形成由成对的O-H = O氢键连接的羧酸盐反转二聚体,分别产生R22(8)环。二聚体通过成对的CHOH氢键连接形成[010]链。

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