摩熵化学
数据库官网
小程序
打开微信扫一扫
首页 分子通 化学资讯 化学百科 反应查询 关于我们
请输入关键词

18-methylenepentatriacontane | 251921-62-7

中文名称
——
中文别名
——
英文名称
18-methylenepentatriacontane
英文别名
18-Methylidenepentatriacontane;18-methylidenepentatriacontane
18-methylenepentatriacontane化学式
CAS
251921-62-7
化学式
C36H72
mdl
——
分子量
504.968
InChiKey
LKXQCUFLMPAUJB-UHFFFAOYSA-N
BEILSTEIN
——
EINECS
——
  • 物化性质
  • 计算性质
  • ADMET
  • 安全信息
  • SDS
  • 制备方法与用途
  • 上下游信息
  • 反应信息
  • 文献信息
  • 表征谱图
  • 同类化合物
  • 相关功能分类
  • 相关结构分类

物化性质

  • 沸点:
    563.9±17.0 °C(predicted)
  • 密度:
    0.817±0.06 g/cm3(Temp: 20 °C; Press: 760 Torr)(predicted)

计算性质

  • 辛醇/水分配系数(LogP):
    19.2
  • 重原子数:
    36
  • 可旋转键数:
    32
  • 环数:
    0.0
  • sp3杂化的碳原子比例:
    0.94
  • 拓扑面积:
    0
  • 氢给体数:
    0
  • 氢受体数:
    0

反应信息

  • 作为反应物:
    描述:
    18-methylenepentatriacontane吡啶dimethyl sulfide borane 、 sodium hydroxide 、 二溴三苯基膦 作用下, 以 四氢呋喃二氯甲烷N,N-二甲基甲酰胺甲苯乙腈 为溶剂, 反应 317.75h, 生成
    参考文献:
    名称:
    卟啉大环在变化的松散度上的滑移:对聚合物通过大环环的机理的启示。
    摘要:
    聚合物通过大环的穿线可能直接发生,即通过发现聚合物链的末端,或通过聚合物链先折叠然后再以发夹状构象穿过大环的过程。我们目前对大环卟啉受体(H 2 1)穿入一侧受阻而另一侧敞开的分子受阻的动力学和热力学研究。敞开侧由在折叠容易程度和体积上各不相同的组修饰。另外,这些线包含大环受体的紫精结合位点,其位于封闭基团附近。H 2 1的穿线率在各种条件下,通过记录作为时间的函数的卟啉的荧光猝灭,所述卟啉的荧光猝灭是在受体H 2 1到达紫精结合位点时发生的。动力学数据表明,如果受体遇到与折叠的聚合物链类似的方式在空间上受到阻碍的开放面,则不可能进行穿线。这表明聚合物不可能通过折叠链机制穿过大环化合物。
    DOI:
    10.1002/chem.201403740
  • 作为产物:
    描述:
    三十五烷-18-醇正丁基锂三苯基膦 作用下, 以 四氢呋喃正己烷 为溶剂, 反应 92.0h, 生成 18-methylenepentatriacontane
    参考文献:
    名称:
    Effects of Molecular Geometry on the STM Image Contrast of Methyl- and Bromo-Substituted Alkanes and Alkanols on Graphite
    摘要:
    Scanning tunneling microscopy (STM) images have been collected for a series of substituted alkanes and alkanols that form ordered overlayers at room temperature on highly ordered pyrolytic graphite surfaces. Molecules that have been imaged possess an internal bromide, with or without terminal alcohol groups (HO(CH2)(9)CHBr(CH2)(10)OH and H3C(CH2)(16)CHBr(CH2)(16)CH3), an internal -OH group (H3C(CH2)(16)CHOH(CH2)(16)CH3), and an internal methyl group (H3C(CH2)(16)CHCH3(CH2)(16)CH3). These data allow comparison to the STM image contrast reported previously for molecules in which -OH, -Br, and -CH3 groups were located in terminal positions of alkane chains adsorbed onto graphite surfaces. When the functional groups were in gauche positions relative to the alkyl chain, and thus produced molecular features that protruded toward the tip, the functional groups were observed to produce bright regions in a constant current STM image, regardless of the STM contrast behavior observed for these same functional groups when they were in terminal positions of adsorbed alkyl chains. These observations are in excellent agreement with theoretical predictions of the STM behavior of such systems. Additionally, several interesting packing structures have been observed that have yielded insight into the intermolecular forces that control the packing displayed by these overlayers.
    DOI:
    10.1021/jp992257t
点击查看最新优质反应信息