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N-(3,5-Di-chloro-4-hy-droxy-phen-yl)acetamide. N - (3 5-Di-chloro-4-hy-droxy-phen-yl)乙酰胺。
Pub Date : 2026-01-29 eCollection Date: 2026-01-01 DOI: 10.1107/S2414314626000751
Rao M Uppu, Frank R Fronczek

The title compound, C8H7Cl2NO2, crystallizes in the triclinic space group P1 with three mol-ecules in the asymmetric unit. Two of them are essentially planar, with mean deviations of 13 non-hydrogen atoms of 0.029 and 0.030 Å, and differ only in the conformation of the O-H hydrogen atom. The third mol-ecule is quite nonplanar, with the CCNO acetamide plane forming a dihedral angle of 67.56 (5)° with the remainder of the mol-ecule. In the extended structure, the two almost planar mol-ecules form anti-parallel hydrogen-bonded chains through N-H⋯O inter-actions of the acetamide substituents. The N-H group of the nonplanar mol-ecule donates a bifurcated hydrogen bond to the O-H group and a Cl substituent of one of the planar mol-ecules. The O-H groups of all mol-ecules form inter-molecular hydrogen bonds to other O-H groups or carbonyl O atoms. Together, the hydrogen bonds generate a three-dimensional network.

标题化合物C8H7Cl2NO2在三斜空间群P1中结晶,在不对称单元中有三个分子。其中两个基本上是平面的,13个非氢原子的平均偏差分别为0.029和0.030 Å,不同的只是O-H氢原子的构象。第三个分子是非平面的,CCNO乙酰胺平面与其余分子形成67.56(5)°的二面角。在扩展结构中,两个几乎平面的分子通过乙酰胺取代基的N-H⋯O相互作用形成反平行的氢键链。非平面分子的N-H基团给O-H基团和一个平面分子的Cl取代基一个分叉的氢键。所有分子的O- h基团与其他O- h基团或羰基O原子形成分子间氢键。氢键一起形成了一个三维网络。
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引用次数: 0
4-Acetamido-3-chloro-phenyl acetate. 4-Acetamido-3-chloro-phenyl醋酸。
Pub Date : 2026-01-29 eCollection Date: 2026-01-01 DOI: 10.1107/S2414314626000763
Sindhu V Bai, Guoqiang Li, Patrick F Mensah, Frank R Fronczek, Rao M Uppu

In the title compound, C10H10ClNO3, the dihedral angles between the chloro-benzene ring and the acetamide and acetate planes are 40.70 (8) and 88.07 (8)°, respectively; the acetamide and acetate planes make a dihedral angle of 51.39 (9)°. In the extended structure, the mol-ecules are linked by N-H⋯O hydrogen bonds involving the acetamide group, forming C(4) chains propagating along the [010] direction.

在标题化合物C10H10ClNO3中,氯苯环与乙酰胺面和乙酸面之间的二面角分别为40.70(8)°和88.07(8)°;乙酰胺面和乙酸面成51.39(9)°的二面角。在扩展结构中,分子由涉及乙酰胺基团的N-H⋯O氢键连接,形成沿[010]方向传播的C(4)链。
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引用次数: 0
3,14-Diselena-4,5,12,13-tetra-aza-tri-cyclo-[9.3.0.02,6]tetra-deca-1(11),2(6),4,12-tetra-ene.
Pub Date : 2026-01-27 eCollection Date: 2026-01-01 DOI: 10.1107/S2414314626000635
Heiner Detert, Dieter Schollmeyer

The crystal structure of the third isomer of cyclooctenobis-1,2,3-selenadiazoles, C8H8N4Se2, is reported. The mol-ecule is located on a twofold rotation axis. The eight-membered ring adopts a twist-chair conformation with planar heterocycles. C-H⋯N hy-dro-gen bonds connect the mol-ecules into layers parallel to (101).

报道了环烯二唑-1,2,3-硒二唑的第三个异构体C8H8N4Se2的晶体结构。分子位于双旋转轴上。八元环为平面杂环扭椅构象。C-H⋯N氢键将分子连接成平行于(101)的层。
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引用次数: 0
Distrontium oxalate tetra-hydroxidocuprate(II). 四羟基乙酸草酸二钠(II)。
Pub Date : 2026-01-20 eCollection Date: 2026-01-01 DOI: 10.1107/S241431462600043X
Hibiki Kunisawa, Jun-Ichi Yamaura, Toshihiro Nomura

The crystal structure of distrontium oxalate tetra-hydroxidocuprate(II) or poly[tetra-μ-hydroxido-μ6-oxalato-copperdistrontium], Sr2(C2O4)[Cu(OH)4] or [Sr2Cu(C2O4)(OH)4] n , has been determined in the triclinic space group P1. The asymmetric unit contains one Sr, one Cu, two hydroxide groups, and half of an oxalate anion. By application of inversion symmetry, a square-planar {Cu(OH)4} unit and a complete oxalate anion are generated. The structure consists of a three-dimensional framework of edge-sharing {SrO4(OH)4} polyhedra decorated by {Cu(OH)4} units and oxalate groups. Only weak hydrogen bonds are observed within the framework.

在三斜空间群P1中,测定了草酸四羟二酸二锑(II)或聚[四μ-羟基-μ-草酸二锑铜],Sr2(C2O4)[Cu(OH)4]或[Sr2Cu(C2O4)(OH)4] n的晶体结构。不对称单元包含一个锶、一个铜、两个氢氧根和半个草酸阴离子。利用反转对称,生成了一个方形平面的{Cu(OH)4}单元和一个完整的草酸盐阴离子。该结构由{Cu(OH)4}单元和草酸基装饰的{SrO4(OH)4}多面体的三维框架组成。在骨架内只观察到弱氢键。
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引用次数: 0
5-{4-[(1R,3S,4S)-Neomenth-yloxy]phen-yl}-1H-tetra-zole. ——5场4 [(1R, 3S, 4S) -Neomenth-yloxy] phen-yl -1H-tetra-zole…….
Pub Date : 2026-01-16 eCollection Date: 2026-01-01 DOI: 10.1107/S2414314626000337
Heiner Detert, Dieter Schollmeyer

The monoclinic unit cell of the title compound, C17H24N4O, contains four mol-ecules, two A and two B. In the extended structure, the two similar conformers are connected into A-ribbons and B-ribbons. Three hydrogen bonds connect the mol-ecules within the ribbons, while π-π inter-actions between the phenyl and tetra-zole moieties of different mol-ecules [centroid-centroid distances of 3.5288 (11) and 3.6138 (11) Å] connect the A and B strands; the aromatic rings are nearly coplanar.

标题化合物c17h24n40o的单斜晶胞包含四个分子,两个A和两个b。在扩展结构中,两个相似的构象被连接成A带和b带。三个氢键连接了条带内的分子,而不同分子的苯基和四唑基团之间的π-π相互作用[质心距离为3.5288(11)和3.6138 (11)Å]连接了A链和B链;芳香环几乎共面。
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引用次数: 0
2,2,2-Tri-fluoro-ethyl 5-methyl-1H-pyrazole-3-carboxyl-ate. 2, 2, 2-Tri-fluoro-ethyl 5-methyl-1H-pyrazole-3-carboxyl-ate。
Pub Date : 2026-01-13 eCollection Date: 2026-01-01 DOI: 10.1107/S2414314626000192
Adriano Bof de Oliveira, Adailton João Bortoluzzi, Alex Fabiani Claro Flores

The title compound, C7H7F3N2O2, which exhibits disorder over the terminal tri-fluoro-methyl and methyl entities, is close to planar with the r.m.s. deviation for the non-H/-F atoms being 0.038 Å. In the crystal, the mol-ecules are linked by N-H⋯N inter-actions into a [010] chain with a C 1 1(3) motif. The Hirshfeld surface fingerprint plot analysis indicates that the major contributions for the crystal packing are from H⋯F/F⋯H (31.2%), H⋯H (15.9%), H⋯O/O⋯H (15.3%) and H⋯N/N⋯H (10.1%) contacts.

标题化合物C7H7F3N2O2在末端三氟甲基和甲基实体上表现出无序性,非h /-F原子的均方根偏差为0.038 Å,接近平面。在晶体中,分子通过N- h⋯N相互作用连接成具有c11(3)基序的[010]链。Hirshfeld表面指纹图谱分析表明,晶体堆积的主要贡献来自H⋯F/F⋯H(31.2%)、H⋯H(15.9%)、H⋯O/O⋯H(15.3%)和H⋯N/N⋯H(10.1%)接触。
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引用次数: 0
2-(4-Hy­droxy­phen­yl)acetamide 2 -乙酰胺(4-Hy-droxy-phen-yl)
Pub Date : 2025-11-01 DOI: 10.1107/S2414314625010077
Allison Kester , Taylor King , Marcus R. Bond
In the title mol­ecule, an isomer of acetamino­phen, the acetamide plane is perpendicular to the phenyl ring plane with the –NH2 group directed outward, in contrast to an in vacuo DFT geometry optimization in which the –NH2 group is directed inward.
In the title mol­ecule, C8H9NO2, which is an isomer of acetamino­phen [N-(4-hy­droxy­phen­yl)acetamide], the acetamide group plane subtends a dihedral angle of 89.95 (5)° with respect to the phenyl ring plane with the –NH2 group directed outward, in contrast to an in vacuo DFT geometry optimization in which the –NH2 group is directed inward. In the extended structure, N—H⋯O hydrogen bonds organize mol­ecules into stacks propagating along [100], with additional hydrogen bonding linking neighboring parallel stacks. A survey of known structures indicates that the structures of 2-phenyl­acetamide mol­ecules with any substitution at the 4-position on the phenyl ring can demonstrate different orientations for the acetamide group ranging from the –NH2 group directed almost completely outward to the –NH2 group directed almost completely inward.
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在标题分子中,乙酰氨基酚的同分异构体,乙酰酰胺平面垂直于苯基环平面,-NH2基团向外,与真空DFT几何优化相反,-NH2基团向内。在标题分子C8H9NO2中,乙酰氨基酚[N-(4-羟基苯基)乙酰胺]的异构体中,乙酰胺基团平面相对于苯基环平面呈89.95(5)°的二面角,- nh2基团向外,而在真空DFT几何优化中- nh2基团向内。在扩展结构中,N-H⋯O氢键将分子组织成沿着[100]传播的堆栈,附加的氢键连接相邻的平行堆栈。对已知结构的研究表明,2-苯基乙酰胺分子在苯基环4位上的任何取代都可以显示出乙酰胺基团的不同取向,从几乎完全向外的-NH2基团到几乎完全向内的-NH2基团。下载:下载高清图片(183KB)下载:下载全尺寸图片
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引用次数: 0
N,N′-Bis[tris­(hy­droxy­meth­yl)meth­yl]propane-1,3-di­amine (bis-tris propane) N,N ' -双[三-(羟基-甲基)甲基]丙烷-1,3-二胺(二-三丙烷)
Pub Date : 2025-11-01 DOI: 10.1107/S241431462500954X
Ismael Angel-Nieto , Rosa Elena Arroyo-Carmona , Aarón Pérez-Benítez , Sylvain Bernès
The crystal structure of a reagent frequently used for the preparation of buffer solutions is reported, showing that the mol­ecule lies on a crystallographic mirror plane, and has a bent conformation.
The title compound, C11H26N2O6, used for the preparation of buffer solutions and high-nuclearity coordination complexes, crystallizes with a half mol­ecule in the asymmetric unit. The full mol­ecule is completed through mirror symmetry m in the space group Pnma. The mol­ecular shape is bent and, as a consequence, some H atoms are disordered to avoid too short H⋯H intra­molecular contacts. Mol­ecules in the crystal are linked via O—H⋯N and N—H⋯O hydrogen bonds, forming chains along [100], which are further packed through other O—H⋯O hydrogen bonds between hy­droxy groups. The here-reported structure probably represents the less-stable form in a set of polymorphs.
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本文报道了一种常用于制备缓冲溶液的试剂的晶体结构,表明该分子位于晶体镜像平面上,并具有弯曲构象。标题化合物C11H26N2O6用于制备缓冲溶液和高核配位配合物,在不对称单元中与半分子结晶。整个分子是通过空间群Pnma中的镜像对称m来完成的。分子形状是弯曲的,因此,一些H原子是无序的,以避免太短的H⋯H分子内接触。晶体中的分子通过O - h⋯N和N - h⋯O氢键连接,沿着[100]形成链,这些链通过羟基之间的其他O - h⋯O氢键进一步排列。这里报道的结构可能代表了一组多态性中较不稳定的形式。下载:下载高清图片(326KB)下载:下载全尺寸图片
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引用次数: 0
catena-Poly[[[pentaaquadysprosium(III)]-μ-5-az­an­ium­ylisophthalato] dichloride monohydrate] catena-Poly[[pentaaquadysprosium(III)]-μ-5- aze - an - ium - ylysophthalate]二氯一水]
Pub Date : 2025-11-01 DOI: 10.1107/S241431462501020X
Ahlem Linda Boulkedid , Mehdi Boutebdja , Rochdi Ghallab
The title compound contains zigzag polymeric chains built up from nine-coordinated DyIII centers and bridging 5-az­an­ium­yl­isophthalate ligands.
In the title compound, {[Dy(C8H6NO4)(H2O)5]Cl2·H2O}n the central DyIII atom is nine-coordinated by four oxygen atoms from two symmetry-related chelating carboxyl­ate groups and five water mol­ecules, resulting in a distorted polyhedral geometry best described as ‘muffin’-type by continuous shape measure analysis. The bridging ligands generate infinite [10
] chains and the structure is consol­idated by an extensive hydrogen-bonding network and weak π–π stacking inter­actions.
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标题化合物包含由九个配位的DyIII中心和桥接的5-az - an - ium - yl -间苯二甲酸配体建立的之字形聚合物链。在标题化合物{[Dy(C8H6NO4)(H2O)5]Cl2·H2O}中,中心DyIII原子由两个对称相关的螯合羧酸基团和五个水分子组成的四个氧原子9配位,形成扭曲的多面体几何形状,通过连续形状测量分析,最佳描述为“松饼”型。桥接配体产生无限的[10]链,并通过广泛的氢键网络和弱π -π堆叠相互作用巩固结构。下载:下载高清图片(295KB)下载:下载全尺寸图片
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引用次数: 0
Bis{2-[bis­(2-hy­droxy­eth­yl)amino]­acetato}­zinc(II) monohydrate Bis {2 - (Bis (2-hy-droxy-eth-yl)氨基]-acetato}锌(II)一水
Pub Date : 2025-11-01 DOI: 10.1107/S241431462501003X
Erik Rakovský , Lenin Thulluvan Valappil , Yogeswara Rao Pateda , Lenka Bartošová , Jana Chrappová
The ZnII atom in the title compound has distorted octa­hedral N2O4 coordination geometry. The inter­molecular inter­actions in the crystal structure consist of O–H⋯O and weak C–H⋯O hydrogen bonds.
The title compound, [Zn(C6H12NO4)2]·H2O, crystallizes in the monoclinic space group P21/c with one formula unit per asymmetric unit. The ZnII atom is coordinated by a tertiary amine N atom, a carboxyl­ate O atom and a hy­droxy O atom from each of two bicine ligands, forming a distorted octa­hedral coordination environment. Inter­molecular inter­actions consist of O—H⋯O and weak C—H⋯O hydrogen bonds forming a three-dimensional supra­molecular network.
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标题化合物中的ni原子具有扭曲的八面体N2O4配位几何。晶体结构中的分子间相互作用由O - h⋯O和弱C-H⋯O氢键组成。标题化合物[Zn(C6H12NO4)2]·H2O在单斜空间群P21/c中结晶,每个不对称单元有一个公式单元。ni原子与来自两个双配体的叔胺N原子、羧酸O原子和羟基O原子配位,形成扭曲的八面体配位环境。分子间相互作用由O - h⋯O和弱C-H⋯O氢键组成,形成三维超分子网络。下载:下载高清图片(230KB)下载:下载全尺寸图片
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引用次数: 0
期刊
IUCrData
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