FeCl3-mediated oxidative fusion of meso-linked dibenzo[a,g]corannulene porphyrin dyads 6M afforded fused porphyrins 7M bearing a five-membered ring connection, but similar oxidation of beta-linked dyads 9M provided fused porphyrins 10M bearing a six-membered ring connection, both in a regiospecific manner. While fused dyads 10M exhibit modestly red-shifted absorption and fluorescence profiles, fused dyads 7M display characteristically red-shifted absorption bands reflecting antiaromatic dehydropurpurin electronic networks.
Imposing Curvature on a Polyarene by Intramolecular Palladium-Catalyzed Arylation Reactions: A Simple Synthesis of Dibenzo[<i>a</i>,<i>g</i>]corannulene
作者:Helge A. Reisch、Matthew S. Bratcher、Lawrence T. Scott
DOI:10.1021/ol005755p
日期:2000.5.1
Palladium catalysis has been found to offer an effective solution-phase alternative to gas-phase flash vacuum pyrolysis as a method for converting the planar ring system of 7, 10-di(2-bromophenyl)fluoranthene (4) to that of the C(28)H(14) bowl-shaped fullerene fragment dibenzo[a,g]corannulene (5).
Molecular curvature tradeoffs: Bending a planar trimercury unit over bowl-shaped polyaromatic hydrocarbons
作者:Alexander S. Filatov、Allison K. Greene、Edward A. Jackson、Lawrence T. Scott、Marina A. Petrukhina
DOI:10.1016/j.jorganchem.2011.01.038
日期:2011.8
located over the central five-membered ring of the corannulene core adding to the rare examples of a multiple metalcoordination to the inner surface of buckybowls. Upon coordination, the planar [Hg3] unit and the bowl-shaped polyaromatichydrocarbons attempt to match the geometric characteristics of each other. Thus, bending of the planar surface of [Hg3] ranging from 6.6° in 1 to 17.0° in 2 and flattening
三种碗形的聚芳烃,即1,2,5,6-四甲基cor喃烯(C 24 H 18),二苯并[ a,g ] ann喃烯(C 28 H 14)和双cor喃烯基(C 40 H 18)的反应与高度亲电的三聚汞络合物(C 18 F 12 Hg 3或[Hg 3 ])形成一维扩展的二元π加合物,[Hg 3 ·C 24 H 18 ](1),[Hg 3 ·C 28高14 ](2)和[(Hg 3)2 ·C 40 H 18 ](3),其具有在固态下与[Hg 3 ]的聚芳烃交替的聚芳烃分子。在1 - 3中,〔汞柱3 ]单元位于所述碗烯芯加入到多金属配位到buckybowls的内表面的罕见例子的中心五元环。通过配位,平面的[Hg 3 ]单元和碗形的聚芳族烃试图使彼此的几何特征相互匹配。因此,[Hg 3 ]的平面的弯曲范围在1的6.6°到17.0的in如图2所示,在这里报道的产品中,π碗的初始深度被展平了14–22%。
Site‐Directed Dimerization of Bowl‐Shaped Radical Anions to Form a σ‐Bonded Dibenzocorannulene Dimer
作者:Sarah N. Spisak、Alexander V. Zabula、Melisa Alkan、Alexander S. Filatov、Andrey Yu. Rogachev、Marina A. Petrukhina
DOI:10.1002/anie.201801537
日期:2018.5.22
Designed site‐directed dimerization of the monoanion radicals of a π‐bowl in the solid state is reported. Dibenzo[a,g]corannulene (C28H14) was selected based on the asymmetry of the charge/spin localization in the C28H14.− anion. Controlled one‐electron reduction of C28H14 with Cs metal in diglyme resulted in crystallization of a new dimer, [Cs+(diglyme)}2(C28H14−C28H14)2−] (1), as revealed by single
报道了固态π碗单阴离子自由基的设计定点二聚。基于C 28 H 14 .-阴离子中电荷/自旋定位的不对称性,选择了二苯并[a,g] corannulene(C 28 H 14)。在二甘醇二甲醚中用Cs金属控制C 28 H 14的单电子还原导致了新的二聚体[Cs +(diglymeme)} 2(C 28 H 14 -C 28 H 14)2- ](1的结晶)),如在较宽的温度范围内进行的单晶X射线衍射研究所揭示的那样。将晶体加热到+67°C时,在-143°C下测得的两个C 28 H 14 .-碗之间的C-C键长(1.560(8)Å)不会显着变化。通过计算可以确定CC连接子的单个σ键特征。观察到两个碗在1中的移位,其围绕中心C-C键的扭转角分别为172.3(5)°和173.5(5)°。对C 28 H 14 .-自由基的二聚途径的系统理论评估证实,在1中发现的反式异构体在能量上受到青睐。
Bowl-Shaped Polyarenes as Concave–Convex Shape Complementary Hosts for C<sub>60</sub>- and C<sub>70</sub>-Fullerenes
作者:Alexander S. Filatov、Michael V. Ferguson、Sarah N. Spisak、Bo Li、Charles F. Campana、Marina A. Petrukhina
DOI:10.1021/cg401616j
日期:2014.2.5
The X-ray crystalstructures of two new co-crystals comprised of C60 and C70 fullerenes and a dibenzo[a,g]corannulene bowl, namely, (C28H14)·(C60) and (C28H14)2·(C70), are reported. A clear difference is observed between C60 to C70, with the latter fullerene molecule being fully ordered and lacking the orientational disorder found in many fullerene co-crystallized products. In the solid state structure
由C 60和C 70富勒烯和二苯并[ a,g ]邻苯二酚碗组成的两个新共晶体的X射线晶体结构,即(C 28 H 14)·(C 60)和(C 28 H 14)2 ·(C 70)的报道。在C 60至C 70之间观察到明显的差异,后者的富勒烯分子是完全有序的,并且缺乏在许多富勒烯共结晶产物中发现的取向紊乱。(C 28 H 14)2 ·(C70),两个碗形的C 28 H 14分子封装了C 70笼,并表现出平行于富勒烯较长轴的优先空间排列。在这种情况下,二苯并[ a,g ]氢化邻戊二烯仅利用其凹面进行结合,显示出碳原子在C 70-富勒烯凸面上的交错构象。在(C 28 H 14)·(C 60)的固态结构中,在C 28 H 14和C 60的曲面之间同时观察到凹凸关系π··π相互作用。C 60核无序显示无优先取向。在这两种情况下,在从中生长共晶的氯化苯溶剂溶液中均未观察到π··π加合物的形成。
Unprecedented Complexation of Two Transition Metals to the Concave Surface of a Geodesic Polyarene: {[Rh<sub>2</sub>(O<sub>2</sub>CCF<sub>3</sub>)<sub>4</sub>]<sub>3</sub>(dibenzo[<i>a</i>,<i>g</i>]corannulene)<sub>2</sub>}
作者:Marina A. Petrukhina、Kristian W. Andreini、Vikki M. Tsefrikas、Lawrence T. Scott
DOI:10.1021/om040131z
日期:2005.3.1
g]corannulene, C28H14, and its first transition-metalcomplex, [Rh2(O2CCF3)4]3(C28H14)2}, has been accomplished. The latter exhibits a novel one-dimensional extended structure based on the tridentate η2:η2:η2 rim coordination of dibenzo[a,g]corannulene. The large concave surface area of C28H14 allows for the first time two metal units to be endo-coordinated to a geodesicpolyarene.
碗形二苯并[ a,g ]氢化邻苯二酚C 28 H 14及其第一过渡金属配合物[Rh 2(O 2 CCF 3)4 ] 3(C 28 H 14)的X射线结构表征2 },已经完成。后者表现出基于所述三齿的新颖的一维扩展结构η 2:η 2:η 2二苯并[轮辋协调一个,克]碗烯。C的大凹面面积28 H 14首次允许将两个金属单元与大地测量聚芳烃进行内配位。