Trioxatriangulenium (TOTA<sup>+</sup>) as a robust carbon-based Lewis acid in frustrated Lewis pair chemistry
作者:Aslam C. Shaikh、José M. Veleta、Jules Moutet、Thomas L. Gianetti
DOI:10.1039/d0sc05893a
日期:——
formation of a Lewis acid–base adduct, frustratedLewispairs (FLPs) were observed for sterically hindered bases such as P(tBu)3. The TOTA+–P(tBu)3 FLP was characterized as an encounter complex, and found to promote the heterolytic cleavage of disulfide bonds, formaldehyde fixation, dehydrogenation of 1,4-cyclohexadiene, heterolytic cleavage of the C–Br bonds, and interception of Staudinger reaction intermediates
我们报道了水稳定的路易斯酸性三氧三三角鎓离子 (TOTA + ) 与一系列路易斯碱(如膦和 N-杂环卡宾 (NHC))之间的反应性。通过变温 (VT) NMR 光谱、单晶 X 射线衍射、紫外-可见光谱和 DFT 计算分析了路易斯酸碱相互作用的性质。虽然小且强亲核的膦,例如PMe 3 ,导致路易斯酸碱加合物的形成,但对于位阻碱基例如P( t Bu) 3 ,观察到了受阻路易斯对(FLP)。 TOTA + –P( t Bu) 3 FLP 被表征为一种相遇配合物,并被发现促进二硫键的异裂、甲醛固定、1,4-环己二烯脱氢、C-Br 键的异裂以及拦截施陶丁格反应中间体。此外,发现TOTA +和NHC首先进行单电子转移(SET)形成[TOTA]·[NHC]˙ + ,并通过电子顺磁共振(EPR)光谱证实,随后形成[TOTA–NHC ] +加合物或产物的混合物,取决于所使用的反应条件。
Faldt, Andre; Krebs, Frederik C.; Thorup, Niels, Journal of the Chemical Society. Perkin Transactions 2 (2001), 1997, # 11, p. 2219 - 2227
作者:Faldt, Andre、Krebs, Frederik C.、Thorup, Niels
DOI:——
日期:——
HUSZTHY, P.;LEMPERT, K.;SIMIG, G., J. CHEM. SOC. PERKIN TRANS., 1985, N 9, 1351-1354
作者:HUSZTHY, P.、LEMPERT, K.、SIMIG, G.
DOI:——
日期:——
COLOR MATCHED AND BRIGHT FLUORESCENT MATERIALS COMPOSED OF SMALL-MOLECULE IONIC LATTICES
申请人:INDIANA UNIVERSITY RESEARCH AND TECHNOLOGY CORPORATION
公开号:US20200407628A1
公开(公告)日:2020-12-31
The present disclosure concerns the design, formulations, preparations and optical properties of compounds of Formulas (I) and (VI):
(charged dye
m+
)
x
·(counterion
n−
)
y
·(counterion receptor)
z
(I) and
(charged dye
m−
)
x
·(counterion
n+
)
y
·(counterion receptor)
z
(VI).
The charged dye
m+
is a cationic dye, counterion
n−
is an anion, and counterion receptor is a binding ligand for the counterion
n−
, wherein m, n, x and y are integers greater than or equal to 1, and products of x·n and m·y are identical for formula (I).
The charged dye
m−
is a anionic dye, counterion
n+
is a cation, and counterion receptor is a binding ligand for the counterion
n+
, wherein m, n, x and y are integers greater than or equal to 1, and products of x·n and m·y are identical for formula (VI).
Huszthy, Peter; Lempert, Karoly; Simig, Gyula, journal of the chemical society-perkin transactions 2, 1985, p. 1351 - 1354