N-butyl-N',N'-dimethylselenourea | 91772-94-0

• 分子结构分类: 有机化合物 - 有机1,3-偶极化合物 - 炔丙基型1，3-偶极有机化合物
• 英文名称: N-butyl-N',N'-dimethylselenourea
• 英文别名: N'-butyl-N,N-dimethylcarbamimidoselenoic acid
• CAS: 91772-94-0
• 化学式: C₇H₁₆N₂Se
• 分子量: 207.177
• InChiKey: YITQPGHIHXBGBE-UHFFFAOYSA-N

物化性质

• 沸点：
  224.9±23.0 °C(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  0.6
• 重原子数：
  10
• 可旋转键数：
  4
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.86
• 拓扑面积：
  15.6
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  N-butyl-N',N'-dimethylselenourea 、 硫酸二甲酯 以 水 为溶剂， 生成 N,N-Dimethyl-N'-n-butyl-Se-methyl-isoselenoharnstoff
  参考文献：
  名称：

  Collard-Charon,C.; Renson,M., Bulletin des Societes Chimiques Belges, 1963, vol. 72, p. 149 - 165

  摘要：

  DOI：
• 作为产物：
  描述：

  异腈基正丁烷 、 二甲胺 在 selenium 作用下， 以 甲苯 为溶剂， 反应 1.0h， 以88%的产率得到N-butyl-N',N'-dimethylselenourea
  参考文献：
  名称：

  A Library of Selenourea Precursors to PbSe Nanocrystals with Size Distributions near the Homogeneous Limit

  摘要：

  We report a tunable library of N,N,N'-trisubstituted selenourea precursors and their reaction with lead oleate at 60-150 degrees C to form carboxylate-terminated PbSe nanocrystals in quantitative yields. Single exponential conversion; kinetics can be tailored over 4 orders of magnitude by adjusting the selenourea structure. The wide range of conversion reactivity allows the extent of nucleation ([nanocrystal] = 4.6-56.7 mu M) and the size following complete precursor conversion (d = 1.7-6.6 nm) to be controlled. Narrow size distributions (sigma = 0.5-2%) are obtained whose spectral line widths are dominated (73-83%) by the intrinsic single particle spectral broadening, as observed using spectral hole burning measurements. The intrinsic broadening decreases with increasing size (fwhm = 320-65 meV, d = 1.6-4.4 nm) that derives from exciton-phonon structure and exciton phonon coupling rather than broadening caused by the size distribution.

  DOI：

  10.1021/jacs.6b11021

文献信息

• Use of sulfur and selenium compounds as precursors to nanostructured materials
  申请人：THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK

  公开号：US10253256B2

  公开（公告）日：2019-04-09

  The presently disclosed subject matter provides processes for preparing nanocrystals, including processes for preparing core-shell nanocrystals. The presently disclosed subject matter also provides sulfur and selenium compounds as precursors to nanostructured materials. The presently disclosed subject matter also provides nanocrystals having a particular particle size distribution.

  目前公开的主题提供了制备纳米晶体的过程，包括制备核壳纳米晶体的过程。目前公开的主题还提供硫和硒化合物作为纳米结构材料的前体。目前公开的主题还提供具有特定粒径分布的纳米晶体。
• Reaction of <i>N</i>,<i>N</i>-Dimethylselenocarbamoyl Chloride with Nucleophiles. Preparation of Diselenocarbamates, Selenothiocarbamates, and Selenoureas
  作者：Mamoru Koketsu、Yoshihisa Fukuta、Hideharu Ishihara

  DOI：10.1021/jo015872d

  日期：2002.2.1

  Reactions of N,N-dimethylselenocarbamoyl chloride prepared by using LiAlHSeH with nucleophiles such as lithium alkylselenolate, lithium alkylthiolate, and amines afford the corresponding diselenocarbamates, selenothiocarbamates, and selenoureas. The crystal structure of the Se-phenyl N,N-dimethyldiselenocarbamate was also determined by X-ray diffraction.