3-benzyl-3'-bromodiphenylmethane | 143328-32-9

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: 3-benzyl-3'-bromodiphenylmethane
• 英文别名: 1-benzyl-3-[(3-bromophenyl)methyl]benzene
• CAS: 143328-32-9
• 化学式: C₂₀H₁₇Br
• 分子量: 337.259
• InChiKey: OQBGXOKTBGFIPU-UHFFFAOYSA-N

物化性质

• 沸点：
  432.8±14.0 °C(Predicted)
• 密度：
  1.275±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  5.63
• 重原子数：
  21.0
• 可旋转键数：
  4.0
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.1
• 拓扑面积：
  0.0
• 氢给体数：
  0.0
• 氢受体数：
  0.0

反应信息

• 作为反应物：
  描述：

  3-benzyl-3'-bromodiphenylmethane 在 chromium(VI) oxide 、 硫酸 、 二乙胺 作用下， 以 四氢呋喃 、 水 、 丙酮 、 甲苯 为溶剂， 生成 1,3,5-Tris<3-((3-benzyl)-benzyl)benzoyl>benzol
  参考文献：
  名称：

  Nakamura, Nobuo; Inoue, Katsuya; Iwamura, Hiizu, Angewandte Chemie, 1993, vol. 105, # 6, p. 900 - 901

  摘要：

  DOI：
• 作为产物：
  描述：

  1-苄基-3-溴苯 在 lithium aluminium tetrahydride 、 三氯化铝 、 magnesium 作用下， 以 乙醚 为溶剂， 生成 3-benzyl-3'-bromodiphenylmethane
  参考文献：
  名称：

  Nakamura, Nobuo; Inoue, Katsuya; Iwamura, Hiizu, Angewandte Chemie, 1993, vol. 105, # 6, p. 900 - 901

  摘要：

  DOI：

文献信息

• Toward Dendritic Two-Dimensional Polycarbenes: Syntheses of ‘Starburst’-Type Nona- and Dodecadiazo Compounds and Magnetic Study of Their Photoproducts
  作者：Kenji Matsuda、Nobuo Nakamura、Katsuya Inoue、Noboru Koga、Hiizu Iwamura

  DOI：10.1246/bcsj.69.1483

  日期：1996.6

  ‘Starburst’-type nona- and dodecadiazo compounds were designed and synthesized by using the cyclotrimerization of ethynyl ketones as a key step. Construction of the larger dodecadiazo compounds was facilitated by using a trimethylsilyl protecting group for an acetylenic moiety. The diazo compounds were photolyzed in MTHF solid solution at cryogenic temperatures and analyzed by means of Faraday magnetometry and ESR spectroscopy. From the field dependence of the magnetization, the nonacarbene, the photoproduct of nonadiazo compound, was evidenced to have a nonadecet (S = 9) ground state. This spin multiplicity is the highest value ever reported for purely organic materials. On the other hand, the spin multiplicity was low and antiferromagnetic interaction operated in the photoproduct of the dodecadiazo compound. This result was interpreted not in terms of the intermolecular antiferromagnetic interaction but of the intramolecular cross-linking between the carbene centers. In the ‘Starburst’-type polycarbenes with extended branching, the reactive carbene centers can become mutually too close to each other in space and so appear to recombine readily. This study showed one of the limitations of the extension of the carbene network by way of flexible ‘Starburst’-type structures.

  以乙炔酮的环三聚化为关键步骤，设计并合成了 "星爆 "型壬二氮和十二烷二氮化合物。通过使用三甲基硅烷保护基团来保护乙炔基，有助于合成较大的十二重氮化合物。重氮化合物在 MTHF 固溶体中低温光解，并通过法拉第磁力仪和 ESR 光谱进行分析。从磁化的磁场依赖性来看，壬二氮化合物的光致产物壬二碳烯被证明具有非十进制（S = 9）基态。这一自旋多重性是迄今为止纯有机材料所报道的最高值。另一方面，十二烷偶氮化合物的光反应产物中自旋倍率较低，存在反铁磁相互作用。对这一结果的解释不是分子间的反铁磁作用，而是碳烯中心之间的分子内交联。在具有扩展分支的 "星爆 "型聚碳酸酯中，活性碳烯中心在空间上会相互过于靠近，因此很容易发生重组。这项研究显示了通过灵活的 "星爆型 "结构扩展碳烯网络的局限性之一。
• Magnetic properties of 1 : 4 complexes of CoCl2 and pyridines carrying carbenes (S0 = 4/2, 6/2, and 8/2) in diluted frozen solution; influence of carbene multiplicity on heterospin single-molecule magnets
  作者：Satoru Karasawa、Kimihiro Nakano、Jun-ichi Tanokashira、Noriko Yamamoto、Takahito Yoshizaki、Noboru Koga

  DOI：10.1039/c2dt31288c

  日期：——

  The microcrystalline sample of a parent complex, [CoCl2(py)4], showed a single-molecule magnet (SMM) behavior with an effective activation barrier, Ueff/kB, of 16 K for reversal of the magnetism in the presence of a dc field of 3 kOe. Pyridine ligands having 2–4 diazo moieties, DYpy; Y = 2, 3l, 3b, and 4, were prepared and confirmed to be quintet, septet, septet, and nonet in the ground state, respectively, after irradiation. The 1 : 4 complexes, CoCl2(DYpy)4; Y = 2, 3l, 3b, and 4 in frozen solutions after irradiation showed the magnetic behaviors of SMMs with total spin multiplicity, Stotal = 17/2, 25/2, 25/2, and 33/2, respectively. Hysteresis loops depending on the temperature were observed and the values of coercive force, Hc, at 1.9 K were 12, 8.4, 11, and 8.1 kOe for CoCl2(CYpy)4; Y = 2, 3l, 3b, and 4, respectively. In dynamic magnetic susceptibility experiments, ac magnetic susceptibility data obeyed the Arrhenius law to give Ueff/kB values of 94, 92, 93, and 87 K for CoCl2(CYpy)4; Y = 2, 3l, 3b, and 4, respectively, while the relaxation times for CoCl2(CYpy)4; Y = 2 and 3l, obtained by dc magnetization decay in the range of 3.5–1.9 K slightly deviated downward from Arrhenius plots on cooling. The dynamic magnetic behaviors for CoCl2(CYpy)4 including [CoCl2(py)4] and CoCl2(C1py)4 suggested that the generated carbenes interacted with the cobalt ion to increase the relaxation time, τq, due to the spin quantum tunneling magnetization, which became larger with increasing Stotal of the complex.

  母体复合物[CoCl2(py)4]的微晶样品显示了单分子磁（SMM）行为，在 3 kOe 直流电场存在下，磁性反转的有效激活势垒 Ueff/kB 为 16 K。我们制备了具有 2â4 重氮分子（DYpy；Y = 2、3l、3b 和 4）的吡啶配体，并在辐照后确认其基态分别为五元、七元、七元和壬元。1â:â4 复合物 CoCl2(DYpy)4; Y = 2、3l、3b 和 4 在冷冻溶液中经辐照后显示出 SMM 的磁性行为，总自旋倍率分别为 Stotal = 17/2、25/2、25/2 和 33/2。在 1.9 K 时，CoCl2(CYpy)4；Y = 2、3l、3b 和 4 的矫顽力 Hc 值分别为 12、8.4、11 和 8.1 kOe。在动态磁感应强度实验中，交流磁感应强度数据符合阿伦尼乌斯定律，CoCl2(CYpy)4; Y = 2、3l、3b 和 4 的 Ueff/kB 值分别为 94、92、93 和 87 K，而 CoCl2(CYpy)4; Y = 2 和 3l 在 3.5â1.9 K 范围内通过直流磁化衰减获得的弛豫时间在冷却时略微向下偏离阿伦尼乌斯图。CoCl2(CYpy)4（包括 [CoCl2(py)4] 和 CoCl2(C1py)4）的动态磁性行为表明，由于自旋量子隧道磁化，生成的碳烯与钴离子相互作用，增加了弛豫时间 Ïq，而弛豫时间随着复合物 Stotal 的增加而变大。
• Iwamura, Hiizu; Nakamura, Nobuo; Koga, Noboru, Molecular Crystals and Liquid Crystals Science and Technology, Section A: Molecular Crystals and Liquid Crystals, 1992, vol. 218, p. 207 - 212
  作者：Iwamura, Hiizu、Nakamura, Nobuo、Koga, Noboru、Sasaki, Shigeru

  DOI：——

  日期：——