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boron dimer | 14452-61-0

中文名称
——
中文别名
——
英文名称
boron dimer
英文别名
(boron)2;boron cluster;Diboron;boranylidyneborane
boron dimer化学式
CAS
14452-61-0
化学式
B2
mdl
——
分子量
21.622
InChiKey
ZOCHARZZJNPSEU-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

  • 物理描述:
    Diborane is a colorless gas with an offensive odor. It is toxic by inhalation. Diborane is decomposed by water giving off hydrogen, another flammable gas and boric acid a non-regulated material. Its vapors are heavier than air. Long term exposure to low concentrations or short term exposure to high concentrations can result in adverse health effects from inhalation. It is used in electronics. Rate of onset: Immediate Persistence: Minutes to hours Odor threshold: 2.5 ppm Source/use/other hazard: Intermediate chemical manufacturing; very flammable.
  • 颜色/状态:
    Colorless gas
  • 气味:
    Repulsively, sickly-sweet odor
  • 沸点:
    -92.5 °C
  • 熔点:
    -165 °C
  • 闪点:
    -130 °F (EPA, 1998)
  • 溶解度:
    Decomposes (NTP, 1992)
  • 密度:
    0.210 at 15 °C; 0.33 at -29.6 °C; 0.447 at -112 °C
  • 蒸汽密度:
    1 (EPA, 1998) (Relative to Air)
  • 蒸汽压力:
    Vapor pressure, kPa at 25 °C:
  • 稳定性/保质期:

    Conditions contributing to instability: Temperatures above -18 °C (0 °F).

  • 自燃温度:
    Spontaneous ignition temp in air about 40-50 °C
  • 分解:
    Heat can cause /diborane/ to decompose violently ...
  • 粘度:
    Gas: 0.00785 mPa.s at 101.325 kPa at 10 °C. Liquid: 0.177 mPa.s at -109.2 °C.
  • 腐蚀性:
    Diborane will attack some forms of plastics, rubber, and coatings.
  • 汽化热:
    14.28 kJ/mol at -92.4 °C
  • 表面张力:
    18.6 mN/m at 121.6 °C
  • 电离电位:
    11.38 eV
  • 聚合:
    Will polymerize to form liquid pentaborane
  • 气味阈值:
    Diborane: 2.0000 mg/cu m (low); 4.0000 mg/cu m (high)

计算性质

  • 辛醇/水分配系数(LogP):
    -0.76
  • 重原子数:
    2
  • 可旋转键数:
    0
  • 环数:
    0.0
  • sp3杂化的碳原子比例:
    0.0
  • 拓扑面积:
    0
  • 氢给体数:
    0
  • 氢受体数:
    0

SDS

SDS:392537ee3cc258f3fbbae33ffcf0f7cd
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反应信息

  • 作为反应物:
    描述:
    boron dimer 在 methane 作用下, 以 solid matrix 为溶剂, 生成 methylborylene
    参考文献:
    名称:
    与甲烷的金属原子反应。硼、铝、镓和铟原子和二聚体
    摘要:
    为了进一步了解单个原子上的 CH 键断裂过程,作者将他们的研究扩展到 B 原子,并将这些与 Al、Ga 和 In 原子进行了比较。为了在类似条件下研究所有这些系统,作者设计了一个矩阵隔离单元,该单元利用准分子激光器作为热源蒸发大量 B、Al、Ga 和 In。基本矩阵单元与他们之前描述的相似。然而,激光束(75 mJ/脉冲和大约 5 脉冲/秒)通过冷窗口的中心(窗口中的一个孔)被引导到目标上,目标被气化,并且随着激光束在其中钻孔目标 排出的蒸汽沿激光束路径返回并射到窗口上。这种设计允许几乎任何材料蒸发,并且在每个激光脉冲后立即沉积蒸汽(因此顺序是脉冲-沉积-脉冲-沉积等,并且光不应干扰传播到窗口的气态物质)。使用这种激光蒸发方法结合 UV-vis 和 IR 光谱,作者监测了 B、B/sub 2/、Al、Al/sub 2/、Ga 和 In 原子更多 » 以及二聚体在氩气存在下的行为(Ar) 和
    DOI:
    10.1021/ja00282a044
  • 作为产物:
    描述:
    boron trioxide 、 甲烷copper(II) oxide 作用下, 生成 boron dimer
    参考文献:
    名称:
    Nischk, Zeitschrift fur Elektrochemie, 1923, vol. 29, p. 383
    摘要:
    DOI:
  • 作为试剂:
    描述:
    参考文献:
    名称:
    Regioselective Homologation of Bis(boronate) Intermediates Derived from Rhodium-Catalyzed Diboration of Simple Alkenes
    摘要:
    烷基-1,2-二(卡氏硼酸酯)的区域选择性同系物化可以通过用TMSCHN2处理这些活性中间体来实现。报告了一种便利的工艺,其中烯烃的双硼化和随后的同系物化反应在同一个反应烧瓶中完成。
    DOI:
    10.1055/s-2005-869873
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文献信息

  • Lithium 3-triphenylmethoxy-1-trans-alkenyl-dialkyl alanates
    申请人:American Cyanamid Company
    公开号:US03932479A1
    公开(公告)日:1976-01-13
    This disclosure describes 3-triphenylmethoxy-1-alkynes, 3-triphenylmethoxy-1-trans-alkenyl-dialkyl-alanes, and lithium 3-triphenylmethoxy-1-trans-alkenyl-dialkyl alanates useful as intermediates for the preparation of certain 11-hydroxy- and 11-deoxy-9-keto(or hydroxy)-prostanoic acid derivatives which possess bronchodilator, hypotensive, and anti-ulcer activity.
    本披露描述了3-三苯甲氧基-1-炔基、3-三苯甲氧基-1-顺式烯基-双烷基铝和3-三苯甲氧基-1-顺式烯基-双烷基丙酸盐,作为制备某些具有支气管扩张、降压和抗溃疡活性的11-羟基-和11-去氧-9-酮(或羟基)前列腺酸生物的中间体。
  • Leukotriene antagonists containing tetrazolyl groups
    申请人:SmithKline Beecham Corporation
    公开号:US05143931A1
    公开(公告)日:1992-09-01
    This invention relates to alkanoic acid compounds having phenyl and heteroarylthio substituents which are useful as leukotriene antagonists and pharmaceutical compositions containing such compounds. This invention also relates to methods of treating diseases in which leukotrienes are a factor by administration of an effective amount of the above compounds or compositions.
    本发明涉及具有苯基和杂环代基取代基的烷基酸化合物,其可用作白三烯拮抗剂和含有此类化合物的药物组合物。本发明还涉及通过给予上述化合物或组合物的有效量来治疗白三烯是因素的疾病的方法。
  • Complexes of macrocyclic compounds
    申请人:Schering Corporation
    公开号:US04156683A1
    公开(公告)日:1979-05-29
    Novel macrocyclic (monocyclic and bicyclic) compounds having nitrogen bridgehead atoms and having in the hydrocarbon bridging chains at least two additional hetero atoms selected from the group consisting of sulfur, oxygen, and nitrogen, when admixed with a compatible cation-donor compound form stable cation-containing macrocyclic complexes which, in turn, can be conveniently dissociated by addition of acid or a quaternizing agent. The novel macrocyclics are valuable for use in the same way and for the same purposes as chelating agents.
    该文献描述的是新型大环化合物,包括单环和双环化合物,具有氮桥头原子,并且在烃桥链中至少含有两个额外的杂原子,包括、氧和氮。当与相容的阳离子供体化合物混合时,形成稳定的阳离子含有的大环化合物复合物,这些复合物可以通过加入酸或季化剂方便地解离。这些新型大环化合物可用于与螯合剂相同的方式和目的。
  • Piperidinyl and piperazinyl compounds substituted with bicyclo-heterocyclylalkyl groups useful as CCR3 receptor antagonists
    申请人:Gong Leyi
    公开号:US20050090504A1
    公开(公告)日:2005-04-28
    Compounds having the Formula (I), are useful as CCR3 receptor antagonists, wherein Ar is aryl or heteroaryl; Q is —C(═O)— or C 1-2 alkylene; X is N( + )R 9a , or N; Y is CR 9b , or N; R 2 is hydrogen or alkyl; R 3 and R 4 are as defined in the specification; U c is a mono- or bicyclic group as defined in the specification; n is 0 or 1; and p is 0, 1, 2, 3 or 4.
    化合物的分子式为(I),可用作CCR3受体拮抗剂,其中Ar为芳基或杂环芳基;Q为—C(═O)—或C1-2烷基;X为N(+)R9a或N;Y为CR9b或N;R2为氢或烷基;R3和R4如规范中定义;Uc为单环或双环基团,如规范中定义;n为0或1;p为0、1、2、3或4。
  • Substituted thieno-benzodiazepines
    申请人:American Cyanamid Company
    公开号:US04168269A1
    公开(公告)日:1979-09-18
    This disclosure describes substituted 9,10-dihydro-4H-thieno[3,4-b] [1,5]benzodiazepines which possess analgesic activity.
    本披露描述了具有镇痛活性的取代的9,10-二氢-4H-噻吩[3,4-b][1,5]苯并二氮平。
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