Polymer Zwitterions with Phosphonium Cations

2021 ◽  
Author(s):  
Marcel U. Brown ◽  
Alexandria Triozzi ◽  
Todd Emrick
Keyword(s):  
Phosphonium Cations

Dicationic phosphonium salts: Lewis acid initiators for the Mukaiyama-aldol reaction

2017 ◽  
Vol 46 (46) ◽  
pp. 16216-16227 ◽  
Author(s):  
Alejandro G. Barrado ◽  
Julia M. Bayne ◽  
Timothy C. Johnstone ◽  
Christian W. Lehmann ◽  
Douglas W. Stephan ◽  
...  
Keyword(s):  
Lewis Acid ◽  
Aldol Reaction ◽  
Phosphonium Salts ◽  
Mukaiyama Aldol Reaction ◽  
Mukaiyama Aldol ◽  
Phosphonium Cations

Two strategies were used to prepare dicationic phosphonium cations.

Influence of ortho- and meta-substituted N-heterocyclic dications towards the self-assembly of p-sulfonatocalix[4]arene

CrystEngComm ◽  
2020 ◽  
Vol 22 (1) ◽  
pp. 52-60 ◽  
Author(s):  
Sze Le Loh ◽  
Alexandre N. Sobolev ◽  
Siew Huah Lim ◽  
Irene Ling
Keyword(s):  
Self Assembly ◽  
Phenyl Ring ◽  
The Self ◽  
Self Assembled ◽  
Phosphonium Cations

The interplay of different organic dications substituted at ortho- or meta-positions on the bis(methylene)phenyl ring and p-sulfonatocalix[4]arene, along with phosphonium cations and hydrated lanthanides affords new fascinating self-assembled structures.

scholarly journals Phosphorous(v) Lewis acids: water/base tolerant P3-trimethylated trications

2018 ◽  
Vol 54 (88) ◽  
pp. 12467-12470 ◽  
Author(s):  
J. M. Bayne ◽  
V. Fasano ◽  
K. M. Szkop ◽  
M. J. Ingleson ◽  
D. W. Stephan
Keyword(s):  
Lewis Acids ◽  
Methyl Groups ◽  
Water Base ◽  
Phosphonium Cations

The water/base intolerance of the previously reported electrophilic phosphonium cations has been overcome by replacing the labile electron-withdrawing groups generally attached to phosphorus (e.g. –F, –OAr, –CF3) with methyl groups.

scholarly journals Correction: Synthesis and X-ray structural characterization of the (chlorochalcogeno)phosphonium cations R2R′PSCl+ and R2R′PSeCl+ as their AuCl4− salts

2017 ◽  
Vol 46 (45) ◽  
pp. 15961-15961
Author(s):  
Daniel Upmann ◽  
Peter G. Jones
Keyword(s):  
Structural Characterization ◽  
Dalton Trans ◽  
X Ray ◽  
Phosphonium Cations

Correction for ‘Synthesis and X-ray structural characterization of the (chlorochalcogeno)phosphonium cations R2R′PSCl+ and R2R′PSeCl+ as their AuCl4− salts’ by Daniel Upmann and Peter G. Jones, Dalton Trans., 2013, 42, 7526–7528.

Are Tetra[gold(I)]phosphonium Cations [(LAu)4P]+ Non-obedient to the LeBel-van’t Hoff Rule?

2008 ◽  
Vol 63 (7) ◽  
pp. 853-859 ◽  
Author(s):  
Hubert Schmidbaur
Keyword(s):  
Ground State ◽  
Central Element ◽  
Theoretical Studies ◽  
Tetrahedral Structure ◽  
Pyramidal Structure ◽  
Onium Salts ◽  
Central Elements ◽  
Aurophilic Interactions ◽  
Molecular And Electronic Structure ◽  
Phosphonium Cations

Recent theoretical studies of the molecular and electronic structure of tetra[(phosphine)gold(I)]- phosphonium cations, [(H3PAu)4P]+, gave contradictory results favoring either a classical tetrahedral or a unique square-pyramidal structure of the PAu4 unit. A tetrahedral structure had previously been confirmed for the corresponding ammonium cations [(Ph3PAu)4N]+, while a square-pyramidal structure was discovered for the corresponding arsonium cations [(Ph3PAu)4As]+, but there is as yet no unequivocal experimental evidence for the structure of phosphonium cations like [(Ph3PAu)4P]+ in an innocent environment. - In this account the structural chemistry of this class of onium salts and related species is reviewed. The data accumulated to date provide virtually compelling evidence that the phosphonium cations should have a ground state with a square pyramidal PAu4 core unit, provided that no external constraints are imposed. For large central elements (P, As), aurophilic interactions appear to drive the reorganization from tetrahedral to square-pyramidal skeletons in which a maximum number of short Au---Au contacts can be maintained. For the small central element N, similar interactions are already realized in the tetrahedral structure.

scholarly journals Ionic liquids and organic ionic plastic crystals utilizing small phosphonium cations

2011 ◽  
Vol 21 (21) ◽  
pp. 7640 ◽  
Author(s):  
Vanessa Armel ◽  
David Velayutham ◽  
Jiazeng Sun ◽  
Patrick C. Howlett ◽  
Maria Forsyth ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Plastic Crystals ◽  
Phosphonium Cations

scholarly journals Phosphonium hydrogels for controlled release of ionic cargo

2018 ◽  
Vol 54 (79) ◽  
pp. 11164-11167 ◽  
Author(s):  
Tristan D. Harrison ◽  
Paul J. Ragogna ◽  
Elizabeth R. Gillies
Keyword(s):  
Controlled Release ◽  
Drug Molecules ◽  
Phosphonium Cations

Hydrogels containing phosphonium cations were synthesized and demonstrated to electrostatically bind and release anionic drug molecules depending on their structures.

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