2589-31-3Relevant articles and documents
Rational selection of the cation of an ionic liquid to control the reaction outcome of a substitution reaction
Hawker, Rebecca R.,Haines, Ronald S.,Harper, Jason B.
, p. 2296 - 2299 (2018)
A range of ionic liquids was examined as solvents for a substitution reaction. They were chosen through rationally varying the ionic liquid cation in order to enhance the rate constant. Access to charge and electron-withdrawing substituents benefitted rat
Anion-cation mediated structural rearrangement of an in-derived three-dimensional interpenetrated metal-organic framework
Bellas, Michael K.,Mihaly, Joseph J.,Zeller, Matthias,Genna, Douglas T.
, p. 950 - 955 (2017)
Postsynthetic modification of metal-organic frameworks (MOFs) has proven an effective method of synthesizing architectures that have proven challenging to produce via classic solvothermal means. Herein we report the anion-cation assisted solid-state trans
Understanding the effects of solvate ionic liquids as solvents on substitution processes
Schaffarczyk McHale, Karin S.,Wong, Michaela J.,Evans, Alicia K.,Gilbert, Alyssa,Haines, Ronald S.,Harper, Jason B.
, p. 9243 - 9250 (2019)
The effects of solvate ionic liquids as solvents have been considered for two substitution processes where the solvent effects of typical ionic liquids have been extensively investigated previously; the bimolecular nucleophilic substitution (SN
Crystal structures of binuclear Bi(III) chloride and bromide complexes with some cations — Alkylated pyridine derivatives
Adonin,Gorokh,Samsonenko,Korol‘kov,Sokolov,Fedin
, p. 718 - 723 (2017)
By a reaction of [BiX6]3– with salts of various N-alkylated pyridine derivatives in 2M HX (X = Cl, Br), (N-BzPy)4[Bi2X10] complexes (X = Cl (1), Br (2), (4-MePyH)4[Bi2Cl10/
Novel antimonate luminescent material Luminescent film and preparation method thereof
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Paragraph 0031-0033, (2021/06/21)
The invention belongs to the technical field of functional materials, in particular to a novel antimonate bromide luminescent material. The benzyl substituted pyridinium pentabromide antimonate is a compound composed of antimony pentabromide anions and be
Targeted Synthesis of Trimeric Organic-Bromoplumbate Hybrids That Display Intrinsic, Highly Stokes-Shifted, Broadband Emission
Febriansyah, Benny,Neo, Chong Shern Daniel,Giovanni, David,Srivastava, Shivani,Lekina, Yulia,Koh, Teck Ming,Li, Yongxin,Shen, Ze Xiang,Asta, Mark,Sum, Tze Chien,Mathews, Nripan,England, Jason
, p. 4431 - 4441 (2020/07/03)
Zero-dimensional (0D) hybrid organic-inorganic lead halides have been shown to display efficient broadband photoluminescence and are, therefore, of significant interest for artificial lighting applications. However, work that investigates the formability of the materials as a function of templating organic cation structure is rare. This severely limits our ability to rationally design new materials displaying specific structural and photophysical properties. With the goal of accessing rare 0D trimeric bromoplumbates, we have systematically varied templating N-alkylpyridinium cations and examined their impact upon inorganic lattice structure. Whereas comparatively short and flexible N-alkyl substituents (ethyl, 2-hydroxyethyl, and pentyl) yield one-dimensional (1D) inorganic chains, more rigid substituents (benzyl, acetamidyl, and cyanomethyl) afford hybrids composed of lead bromide face-sharing trimers (i.e., [Pb3Br12]6-). Of the rigid substituents studied, benzyl groups were found to enforce the highest level of distortion of the [PbBr6]4- octahedra that comprise their trimeric structures. Upon exposure to ultraviolet (UV) light, N-benzylpyridinium lead bromide (1)6[Pb3Br12] exhibits a broadband emission, centered at 571 nm, which spans from 400 to 800 nm. More specifically, it displays a large Stokes shift of ca. 1.39 eV and a full width at half-maximum of ca. 146 nm. This broadband emission decays with a comparatively long lifetime of 426 ns at room temperature, which increases to 5.8 μs at 77 K. The reduced size and dimensionality of its inorganic lattice also result in a photoluminescence quantum yield (of at least 10%) that is approximately one order of magnitude higher than that of its 1D congeners. Mechanistically, broadband emission in (1)6[Pb3Br12] is believed to originate from triplet excited state(s) obtained from excited-state structural reorganization of the [Pb3Br12]6- moiety.
Are pyridinium ylides radicals?
Liao, Fan,Huang, Wenhuan,Chen, Biao,Ding, Zijing,Li, Xingxing,Su, Hao,Wang, Tao,Wang, Yucai,Miao, Hui,Zhang, Xiaolong,Luo, Yi,Yang, Jinlong,Zhang, Guoqing
supporting information, p. 11287 - 11290 (2020/10/06)
Pyridinium ylides are usually considered nucleophiles that can undergo various reactions involving electron pairs. However, it was found that ylides resulting from deprotonation ofN-alkyl-substituted pyridinium salts exhibit radical characters, with no di
Enantiomerically enriched tetrahydropyridine allyl chlorides
Brethomé, Alexandre V.,Fletcher, Stephen P.,Karabiyikoglu, Sedef,Palacin, Thomas,Paton, Robert S.
, p. 4125 - 4130 (2020/05/08)
Enantiomerically enriched allyl halides are rare due to their configurational lability. Here we report stable piperidine-based allyl chloride enantiomers. These allyl chlorides can be producedviakinetic resolution, and undergo highly enantiospecific catal
ENANTIOMERIC COMPOUNDS
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Page/Page column 24, (2020/05/07)
The present invention relates to enantiomeric compounds, their use in stereospecific reactions and to a method of preparing enantiomeric compounds.
The effect of bisimidazolium-based ionic liquids on a bimolecular substitution process. Are two head(group)s better than one?
Haines, Ronald S.,Harper, Jason B.,Liu, Kenny T.-C.
supporting information, p. 7388 - 7395 (2020/10/13)
A homologous series of biscationic ionic liquids based on two imidazolium centres, separated by alkyl chains of varying length, were examined as solvents for a bimolecular substitution reaction across a range of proportions of ionic liquid in the reaction
