potassium carbide | 39326-89-1

• 分子结构分类: 有机化合物
• 英文名称: potassium carbide
• CAS: 39326-89-1
• 化学式: CK
• 分子量: 51.1093
• InChiKey: CIAXFBVXQWOYPA-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  None
• 重原子数：
  None
• 可旋转键数：
  None
• 环数：
  None
• sp3杂化的碳原子比例：
  None
• 拓扑面积：
  None
• 氢给体数：
  None
• 氢受体数：
  None

反应信息

• 作为反应物：
  描述：

  potassium carbide 、 碘化钾 、 n-butyl coumarate 、 3-氯-2-甲基丙烯 在 氮 、 水 、 正己烷 、 solution 、 disodium;carbonate 、 甲醇 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 70.0 ℃ 、1.33 kPa 条件下， 反应 21.0h， 以163.5 g (74.5% of theory) of product melting at 32°-33° C. are obtained的产率得到3-[4-(2-Methyl-2-Propenyl)Oxy-Phenyl]-2-Propenoic Acid n-Butyl Ester
  参考文献：
  名称：

  Organosilicon compounds their preparation and use

  摘要：

  具有至少一个通式##STR1##中R代表烷基，R'为二价烷基，氧烷基，烯基或氧烯基，Z代表烷基，烷氧基或羟基，a的值为0，1，2或3，c为0或1，其中Z和R'中至少有一个通过醚键连接到多价芳基，可用于吸收紫外线辐射。特别是如果是聚合物（例如具有二有机硅氧烷单元），它们可以被纳入防晒制剂中，以提高其对皮肤的稳定性。还公开了一种制备这些化合物的过程。

  公开号：

  US05077422A1
• 作为产物：
  描述：

  氢化钾 、 methane 以 gaseous matrix 为溶剂， 生成 potassium carbide
  参考文献：
  名称：

  Gas phase spectroscopy of alkali carbides: The pure rotational spectrum of KC (X 4Σ−)

  摘要：

  The pure rotational spectrum of the KC radical in its X 4Σ− ground state has been recorded using millimeter/submillimeter direct absorption spectroscopy. This study is the first gas phase observation of potassium carbide, and of any alkali metal carbide species. The molecule was produced under d.c. discharge conditions by the reaction of potassium vapor and CH4; the vapor was generated in a Broida-type oven. Eleven rotational transitions were measured for KC in the frequency range 344–515 GHz; fine structure was resolved in every transition, which consisted of a quartet pattern. The data were analyzed using nonlinear least-squares methods in a Hund’s case (b) basis, and rotational and fine structure parameters were accurately determined. The third-order contribution to the spin–rotation term was not found necessary for the data fit, although it has been suggested for states of quartet multiplicity and higher. The spin–spin interactions in KC appear to have a significant direct dipolar component. The bond length and electron configuration in KC have also been established, which suggest some covalent character to its bonding.

  DOI：

  10.1063/1.478367

文献信息

• Organosilicon compounds
  申请人：Dow Corning Limited

  公开号：US04912241A1

  公开（公告）日：1990-03-27

  Organosilicon compounds having at least one unit of the general formula ##STR1## in which R represents alkyl, R' is a divalent alkylene, oxyalkylene, alkenylene or oxyalkenylene, Z represents an alkyl, alkoxy or hydroxyl group, a has a value of 0, 1, 2 or 3 and c is 0 to 1, wherein at least one of Z and R' is linked to the multivalent aryl group via an ether linkage, are useful for absorbing UV radiation. Especially if polymeric (with e.g. diorganosiloxane units) they can be incorporated in sunscreen preparations to improve their substantivity to the skin. A process for preparing the compounds is also disclosed.

  具有至少一个通式##STR1##中R代表烷基，R'是二价烷基，氧烷基，烯基或氧烯基，Z代表烷基，烷氧基或羟基，a的值为0，1，2或3，c为0至1，其中至少一个Z和R'通过醚键连接到多价芳基，用于吸收紫外线辐射。特别是如果是聚合物（例如含二烷基硅氧烷单元），它们可以被纳入防晒制剂中，以提高它们对皮肤的持久性。还公开了制备该化合物的方法。