AbstractFive crystalline organic acid-base salts [(HL)·(dnsa−), L = 2,6-dimethylaniline, dnsa− = 3,5-dinitrosalicylate] (1), [(HL+)·(4-Hnpta−), 4-Hnpta− = 4-nitrophthalate] (2), [(HL)2·(nds)·(H2O)2, nds = 1,5-naphthalenedisulfonate] (3), [(HL)·(dnb)·(Hdnb), dnb = 3,5-dinitrobenzoate, Hdnb = 3,5-dinitrobenzoic acid] (4) and [(HL)·(dca), dca = dichloroacetate] (5) from 2,6-dimethylaniline and organic acids were prepared and characterized by XRD analysis, IR, mp and elemental analysis. Compound 1 adopts the triclinic, space group Pī, with a = 7.6261(6) Å, b = 8.3429(8) Å, c = 13.1147(12) Å, α = 91.3610(10)º, β = 102.755(2)º, γ = 102.597(2)º, V = 791.96(12) Å3, Z = 2. Compound 2 belongs to the monoclinic, space group P2(1)/c, with a = 14.2552(15) Å, b = 8.1436(8) Å, c = 14.5708(13) Å, α = 90°, β = 113.795(2)º, γ = 90°, V = 1547.7(3) Å3, Z = 4. Compound 3 crystallizes in the monoclinic, space group P2(1)/c, with a = 8.4784(7) Å, b = 17.4798(15) Å, c = 9.1119(8) Å, α = 90°, β = 99.742(2)º, γ = 90°, V = 1330.9(2) Å3, Z = 2. Compound 4 has orthorhombic, space group Pna2(1), with a = 24.5029(19) Å, b = 7.5322(9) Å, c = 26.665(2) Å, α = 90°, β = 90°, γ = 90°, V = 4921.3(8) Å3, Z = 8. Compound 5 crystallizes in the monoclinic, space group C2/c, with a = 19.8970(17) Å, b = 11.1850(11) Å, c = 13.1590(12) Å, α = 90°, β = 123.408(3)º, γ = 90°, V = 2444.6(4) Å3, Z = 8. For 1 it was the relatively weak phenol that has ionized, different from 2 to 5. All supramolecular architectures of 1–5 involve N–H⋯O H-bonds as well as CH3⋯O interactions. The other noncovalent interactions (CH⋯O, CH⋯Cl, O⋯C, O⋯N, O⋯O, Cl⋯Cl, C⋯π, O⋯π, CH3⋯π and π⋯π) in the crystal packing were also ascertained. These weak interactions combined, all compounds displayed 3D framework structures.Graphical AbstractIn the five prepared supramolecular assemblies there are plenty of weak bonding interactions such as directional H-bonds of N–H⋯O, O–H⋯O, O–H⋯S, O–H⋯N and noncovalent bonds of CH⋯O, CH3⋯O, CH⋯Cl, O⋯C, O⋯N, O⋯O, Cl–Cl, C⋯π, O⋯π, CH3⋯π, and aryl⋯aryl interactions. All compounds displayed the 3D framework structures

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来自 2,6-二甲基苯胺和有机酸的五种 3D 有机盐的晶体和分子结构

摘要五种结晶有机酸碱盐 [(HL)·(dnsa−), L = 2,6-二甲基苯胺, dnsa− = 3,5-二硝基水杨酸盐​​] (1), [(HL+)·(4-Hnpta−), 4-Hnpta− = 4-硝基邻苯二甲酸酯] (2), [(HL)2·(nds)·(H2O)2, nds = 1,5-萘二磺酸酯] (3), [(HL)·(dnb)·( Hdnb), dnb = 3,5-二硝基苯甲酸酯, Hdnb = 3,5-二硝基苯甲酸] (4) 和 [(HL)·(dca), dca = 二氯乙酸酯] (5) 来自 2,6-二甲基苯胺和有机酸制备并通过 XRD 分析、IR、mp 和元素分析表征。化合物1采用三斜空间群Pī，a = 7.6261(6) Å, b = 8.3429(8) Å, c = 13.1147(12) Å, α = 91.3610(10)º, β = 102.755(2)º , γ = 102.597(2)º, V = 791.96(12) Å3, Z = 2。化合物 2 属于单斜晶系，空间群 P2(1)/c，a = 14.2552(15) Å，b = 8.1436( 8) Å, c = 14.5708(13) Å, α = 90°, β = 113.795(2)º, γ = 90°, V = 1547.7(3) Å3, Z = 4。化合物 3 在单斜晶系中结晶，空间群 P2(1)/c，a = 8.4784(7) Å，b = 17.4798(15) Å，c = 9.1119(8) Å，α = 90°，β = 99.742( 2)º, γ = 90°, V = 1330.9(2) Å3, Z = 2. 化合物 4 为正交空间群 Pna2(1), a = 24.5029(19) Å, b = 7.5322(9) Å, c = 26.665(2) Å, α = 90°, β = 90°, γ = 90°, V = 4921.3(8) Å3, Z = 8。化合物 5 在单斜晶系中结晶，空间群为 C2/c，具有= 19.8970(17) Å, b = 11.1850(11) Å, c = 13.1590(12) Å, α = 90°, β = 123.408(3)º, γ = 90°, V = 2444.6(4) Å3 = 8. 对于 1，电离的是相对较弱的苯酚，与 2 到 5 不同。1-5 的所有超分子结构都涉及 N–H⋯O H 键以及 CH3⋯O 相互作用。晶体堆积中的其他非共价相互作用（CH⋯O、CH⋯Cl、O⋯C、O⋯N、O⋯O、Cl⋯Cl、C⋯π、O⋯π、CH3⋯π和π⋯π）分别为也确定了。这些弱相互作用结合在一起，所有化合物都显示出 3D 骨架结构。 图解摘要在五个制备的超分子组装体中，存在大量弱键相互作用，例如 N-H⋯O、O-H⋯O、O-H⋯S 的定向 H 键, O-H⋯N 和 CH⋯O, CH3⋯O, CH⋯Cl, O⋯C, O⋯N, O⋯O, Cl-Cl, C⋯π, O⋯π, CH3⋯π 的非共价键，和芳⋯芳基相互作用。所有化合物均显示 3D 骨架结构