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相关概念视频

Glassware Calibration01:11

Glassware Calibration

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Accurate calibration of glassware, such as volumetric flasks, pipettes, and burettes, is essential to ensure accurate measurements in the analytical laboratory. Calibration helps maintain consistency across measurements and prevents errors arising from inaccurate volumes.
Volumetric flasks: Volumetric flasks are designed to prepare aqueous solutions of precise volumes accurately with a calibration line on the neck. To calibrate a volumetric flask, it is important to fill it with distilled...
2.0K

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相关实验视频

Updated: May 4, 2026

Assay for Phosphorylation and Microtubule Binding Along with Localization of Tau Protein in Colorectal Cancer Cells
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Assay for Phosphorylation and Microtubule Binding Along with Localization of Tau Protein in Colorectal Cancer Cells

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4 - - 库尔库明的使用.

Phuong-Truc T Pham1, Mamoun M Bader2

  • 1Department of Chemistry Pennsylvania State Scranton Dunmore PA 18512 USA.

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PubMed
概括
此摘要是机器生成的。

这项研究详细介绍了4-chloro-5-hydroxy-1,7-bis-(4-hydroxy-3-methoxyphenyl) hepta-1,4,6-trien-3-one.one 的晶体结构. 该分子具有近平面形状,具有分子内键,并通过分子间键和pi-pi堆叠在晶格中形成链.

关键词:
晶体结构 晶体结构这是一种黄素衍生物.通过键形成键.

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科学领域:

  • 晶体学 晶体学是指结晶学.
  • 有机化学 有机化学
  • 分子结构分子结构

背景情况:

  • 了解有机化合物的三维结构对于预测其特性和反应性至关重要.
  • 详细的结构分析提供了对调节材料性质的分子间相互作用的见解.

研究的目的:

  • 为了阐明4-chloro-5-hydroxy-1,7-bis-(4-hydroxy-3-methoxyphenyl) hepta-1,4,6-trien-3-one 的晶体结构.
  • 在固态中研究分子构造和分子间相互作用.

主要方法:

  • 用单晶X射线衍射分析来确定晶体结构.
  • 对键长度,键角,二面角和键网络的分析.

主要成果:

  • 标题化合物C21H19ClO6采用近平面形状,末端基之间的二面角为2.61~7°.
  • 在分子内确定了三个分子内O-HO键.
  • 在晶格中,分子通过分子间O-HO键排列成 [201] 链.
  • 观察到微弱的芳香 π-π 堆叠相互作用,最短的中心心-中心心分离度为 3.7279(8) Å.

结论:

  • 晶体结构显示出由键和π-π堆叠驱动的特定分子排列.
  • 接近平面的几何形状和已识别的键是影响该化合物的固态包装和潜在性质的关键特征.