The syntheses of 32 complexes of the type (η-C5H5)2Ti(OOCC6H4X)2 are reported together with their mass, 1H NMR, 13C NMR, mid- and far-IR spectra. The data are consistent with a model in which the TiOOC bond strength (weaker than that of TiCp and TiHal) is stabilized by electron-withdrawing substituents X on the phenyl rings. The electronic influence of X also extends into the cyclopentadienyl rings
的类型的32种复合物的合成(η-C 5 H ^ 5)2的Ti(OOCC 6 H ^ 4 X)2与它们的质量,一起报告1 H NMR,13 C NMR,中期和远红外光谱。该数据与通过苯环上的吸电子取代基X稳定了TiOOC键强度(比TiCp和TiHal的强度弱)的模型一致。X的电子影响也延伸到环戊二烯基环中。
Dynamic aspects in host–guest complexation by coordination nanotubes
Rod-like guests accommodated in self-assembled coordination nanotubes are shown to stay in the tubes without flipping along its length at room temperature, but rapidly exchange intermolecularly at high temperature.
Structural information of nanosized iron oxide clusters serendipitously poses the solution of long‐standing problems on nanomaterials: Intra/inter surfactant and core–surfactant interaction
作者:Jihyun Choi、Sungho Yoon
DOI:10.1002/bkcs.12456
日期:2022.2
information on the surface structure of surfactant-protected metal oxide nanoparticles (NPs) is limited due to the difficulties in preparing samples suitable for single-crystal x-ray diffraction analysis. Herein, we report the synthesis and x-ray structural analysis of 4-biphenylcarboxylic acid-protected nanosized iron oxide, comprising 11 Fe(III) ions, 6 O atoms, 6 (OH) ions, and 15 biphenylcarboxylates
由于难以制备适用于单晶 X 射线衍射分析的样品,有关表面活性剂保护的金属氧化物纳米粒子 (NPs) 表面结构的详细信息有限。在此,我们报告了 4-联苯羧酸保护的纳米氧化铁的合成和 X 射线结构分析,包括 11 个 Fe(III) 离子、6 个 O 原子、6 个 (OH) 离子和 15 个联苯羧酸盐。羧酸盐在核心中桥接相邻的 Fe(III) 离子,核心形成略微扭曲的五角三棱柱。此外,观察到纳米颗粒表面上的苯基之间的广泛嵌入。
Prostane derivatives, processes for their preparation and their pharmaceutical compositions
申请人:IMPERIAL CHEMICAL INDUSTRIES PLC
公开号:EP0010360A1
公开(公告)日:1980-04-30
The disclosure relates to 9β-aryloxy prostane derivatives, for example 16-(3-chlorophenoxy) -11α, 15a-dihydroxy-16 -methyl-9β-phenoxy -18, 19, 20-trinor-5-cis, 13-trans-prostadienoic acid, which possess high activity as abortifacients, cervical softeners, inducers of parturition or inhibitors of gastric acid production in mammals. These properties are typical of prostaglandin analogues of the E series, but chemically the new 9β-aryloxy prostane derivatives are prostaglandin F series analogues and are therefore more stable than the E series analogues previously used for the above purposes. The new derivatives are manufactured by known analogy processes, and are formulated in conventional manner.
本公开涉及 9β-芳氧基前列腺烷衍生物,例如 16-(3-氯苯氧基) -11α,15a-二羟基-16-甲基-9β-苯氧基-18,19,20-三去甲-5-顺式,13-反式-脯氨二烯酸,这些衍生物作为堕胎药、子宫颈软化剂、分娩诱导剂或哺乳动物胃酸分泌抑制剂具有很高的活性。这些特性是 E 系列前列腺素类似物的典型特征,但从化学角度看,新的 9β-aryloxy 前列腺素衍生物是前列腺素 F 系列类似物,因此比以前用于上述目的的 E 系列类似物更稳定。新的衍生物采用已知的类比工艺制造,并以常规方式配制。
Bis(substituted benzoato) complexes of bis(η-cyclopentadienyl)titanium(IV). Synthesis, mass, 1H, 13C NMR and IR spectroscopy