Cocrystallization with Phosphine Oxide Derivatives as a Means of Modifying Photochemical Reactivity in the Solid State

1994 ◽  
Vol 6 (8) ◽  
pp. 1094-1095 ◽  
Author(s):  
Bozena Borecka ◽  
Tai Y. Fu ◽  
Anna D. Gudmundsdottir ◽  
Ray Jones ◽  
Zhaoqing Liu ◽  
...  
Keyword(s):  
Solid State ◽  
Phosphine Oxide ◽  
Photochemical Reactivity

scholarly journals Naphthyl-Fused Phosphepines: Luminescent Contorted Polycyclic P-Heterocycles

2019 ◽  
Author(s):  
Thomas Delouche ◽  
Réka Mokrai ◽  
Thierry Roisnel ◽  
Denis Tondelier ◽  
Bernard Geffroy ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Solid State ◽  
Phosphine Oxide ◽  
Steric Hindrance ◽  
Building Blocks ◽  
Redox Properties ◽  
Substitution Reactions ◽  
Pi Conjugated ◽  
New Family ◽  
Pi Systems

The article presents the synthesis of a new family of naphthyl-fused phosphepines through Ni-mediated C-C coupling. Interestingly, the chloro-phosphine-oxide intermediate shows strong resistance toward oxidation/hydrolysis due to a combination of steric hindrance and pnictogen interactions. However it can undergo substitution reactions under specific conditions. The optical / redox properties and the electronic structure of these new pi-systems were studied experimentally and computationally. Taking advantage of the luminescence of these derivatives, a blue emitting OLED has been prepared highlighting that these novel pi-conjugated P-heterocycles appear as promising building blocks for solid-state lightning applications.

scholarly journals Naphthyl-Fused Phosphepines: Luminescent Contorted Polycyclic P-Heterocycles

2019 ◽  
Author(s):  
Thomas Delouche ◽  
Réka Mokrai ◽  
Thierry Roisnel ◽  
Denis Tondelier ◽  
Bernard Geffroy ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Solid State ◽  
Phosphine Oxide ◽  
Steric Hindrance ◽  
Building Blocks ◽  
Redox Properties ◽  
Substitution Reactions ◽  
Pi Conjugated ◽  
New Family ◽  
Pi Systems

The article presents the synthesis of a new family of naphthyl-fused phosphepines through Ni-mediated C-C coupling. Interestingly, the chloro-phosphine-oxide intermediate shows strong resistance toward oxidation/hydrolysis due to a combination of steric hindrance and pnictogen interactions. However it can undergo substitution reactions under specific conditions. The optical / redox properties and the electronic structure of these new pi-systems were studied experimentally and computationally. Taking advantage of the luminescence of these derivatives, a blue emitting OLED has been prepared highlighting that these novel pi-conjugated P-heterocycles appear as promising building blocks for solid-state lightning applications.

Characterization of secondary phosphine oxide ligands on the surface of iridium nanoparticles

2017 ◽  
Vol 19 (32) ◽  
pp. 21655-21662 ◽  
Author(s):  
Israel Cano ◽  
Luis M. Martínez-Prieto ◽  
Pier F. Fazzini ◽  
Yannick Coppel ◽  
Bruno Chaudret ◽  
...  
Keyword(s):  
Solid State ◽  
Phosphine Oxide ◽  
Solid State Nmr ◽  
Coordination Mode ◽  
Secondary Phosphine ◽  
Nanoparticle Catalysts ◽  
Iridium Nanoparticles

The coordination mode of secondary phosphine oxide ligands on the surface of iridium nanoparticle catalysts was elucidated by solid-state NMR.

Two 1D zinc coordination polymers based on tris(p-carboxylphenyl)phosphine oxide: syntheses, structures and photoluminescence properties

2017 ◽  
Vol 72 (8) ◽  
pp. 579-584 ◽  
Author(s):  
Feng Da Bao ◽  
Ya Jie Ruan ◽  
Ge Ge Du ◽  
Shu Kai Zou ◽  
Jie Zhang ◽  
...  
Keyword(s):  
Solid State ◽  
Coordination Polymers ◽  
Phosphine Oxide ◽  
Elemental Analysis ◽  
Structural Features ◽  
Photoluminescence Properties ◽  
X Ray Diffraction ◽  
X Ray ◽  
Metal Organic ◽  
Zinc Coordination

AbstractTwo metal-organic coordination polymers constructed from tris(p-carboxylphenyl)phosphine oxide (TPOH3), namely, [Zn(TPOH)(2,2′-bipy)(H2O)·H2O·DMF]n (1) and [Zn2(TPOH)2(1,4-bix)2·5H2O]n (2) (2,2′-bipy=2,2′-bipydine, 1,4-bix=1,4-bis(imidazol-1-ylmethyl)benzene), were synthesized and identified by IR, elemental analysis and single-crystal X-ray diffraction analysis. Both of the 2,2′-bipy and 1,4-bix ligands tailor the complexes 1 and 2 into chain structures. The thermal behavior and solid state photoluminescence properties correlated with the corresponding structural features were investigated.

Phosphine chalcogenide complexes of antimony(III) halides

2015 ◽  
Vol 93 (3) ◽  
pp. 375-379 ◽  
Author(s):  
Karlee L. Bamford ◽  
Alasdair P.M. Robertson ◽  
Hilary A. Jenkins ◽  
Brian O. Patrick ◽  
Neil Burford
Keyword(s):  
Solid State ◽  
Single Crystal ◽  
Phosphine Oxide ◽  
State Structure ◽  
X Ray Diffraction ◽  
Solid State Structure ◽  
X Ray ◽  
Derivatives Of

Three series of phosphine chalcogenide complexes of the antimony(III) halides SbX3 (X = F, Cl, Br, or I) have been synthesized and characterized by spectroscopic and crystallographic methods. Complexes of the generic formulae (Cy3PO)SbX3 (X = F (1a), Cl (1b), or Br (1c)), (Cy3PO)2SbX3 (X = F (2a), Cl (2b), or Br (2c)), and (Cy3PS)SbX3 (X = Cl (3b), Br (3c), or I (3d)) were synthesized via the treatment of solutions of SbX3 with OPCy3 and SPCy3, respectively. Derivatives of (Cy3PO)SbX3 were characterized by single crystal X-ray diffraction for 1a and 1b and crystallize as dimers through symmetry related intermolecular Sb–X interactions, providing the first structurally characterized examples of this class of complex. Derivatives of (Cy3PS)SbX3 (3b–3c) adopt analogous dimeric structures in the solid state. The solid-state structure of (Cy3PO)2SbCl3 (2b) is consistent with the previously reported structures of bis-phosphine oxide complexes of antimony(III), with a square pyramidal Sb center and cis-configured OPCy3 ligands. The phosphine chalcogenide complexes of SbX3 display configurations that are consistent with the perceived trans-labilizing properties of the ligands/substituents.

Trapping of o-quinodimethane with p-quinones: synthesis of tetrahydro-1,4-anthracenediones

1985 ◽  
Vol 63 (12) ◽  
pp. 3526-3529 ◽  
Author(s):  
Syed Askari ◽  
Susan Lee ◽  
Robert R. Perkins ◽  
John R. Scheffer
Keyword(s):  
Solid State ◽  
Sulfur Dioxide ◽  
Direct Method ◽  
Diels Alder ◽  
Fluoride Ion ◽  
Photochemical Reactivity ◽  
Neutral Conditions ◽  
Extrusion Method

Previous work from our laboratory has been concerned with investigating the photochemical reactivity of the tetrahydro-1,4-napthalenedione system, both in solution and the solid state. The results obtained prompted us to extend our studies to the analogous tetrahydro-1,4-anthracenedione system. The most direct method of synthesis of the desired compounds is through Diels–Alder addition of o-quinodimethane to p-quinones. Because of the ease with which the adducts would be expected to undergo bis-enolization to the corresponding hydroquinones, their preparation requires mild, neutral conditions. After much experimentation, success was achieved using the Durst–Charlton sulfur dioxide extrusion method for generating o-quinodimethane from 3,6-dihydro-1,2-oxathiin-2-oxide. Insitu trapping using p-benzoquinone and other substituted p-quinones afforded the desired adducts in reasonable yields. In the case of duroquinone and 2,3-dimethyl-1,4-naphthalenedione, fluoride ion-catalyzed generation of o-quinodimethane from [o-[α-(trimethylsilyl)methyl]benzyl]trimethylammonium bromide by the method of Ito also gave acceptable results; however, the bis-enolizable adducts were not stable under these eaction conditions.

scholarly journals Extraction and coordination studies of a carbonyl–phosphine oxide scorpionate ligand with uranyl and lanthanide(iii) nitrates: structural, spectroscopic and DFT characterization of the complexes

2016 ◽  
Vol 45 (12) ◽  
pp. 5162-5179 ◽  
Author(s):  
Anna G. Matveeva ◽  
Anna V. Vologzhanina ◽  
Evgenii I. Goryunov ◽  
Rinat R. Aysin ◽  
Margarita P. Pasechnik ◽  
...  
Keyword(s):  
Solid State ◽  
Phosphine Oxide ◽  
Block Element ◽  
Organophosphorus Ligand ◽  
Extraction Properties ◽  
Scorpionate Ligand

A scorpionate organophosphorus ligand exhibits promising extraction properties and variable denticity in f-block element complexes in the solid state and solution.

A new synthetic route to the electron-deficient ligand tris(3,4,5-tribromopyrazol-1-yl)phosphine oxide

2016 ◽  
Vol 72 (11) ◽  
pp. 846-849
Author(s):  
Emmanuel Nicolas ◽  
Thibault Cheisson ◽  
G. Bas de Jong ◽  
Cornelis G. J. Tazelaar ◽  
J. Chris Slootweg
Keyword(s):  
Solid State ◽  
Metal Complexes ◽  
Phosphine Oxide ◽  
Pyrazole Ring ◽  
Synthetic Route ◽  
Halogen Bonds

The anionic tris(pyrazolyl)borates, or scorpionates, have proven to be extremely useful ligands. Neutral tris(pyrazolyl)methane ligands, however, are difficult to prepare and require numerous purification steps for a number of substitution patterns. We have previously outlined two different routes for accessing neutral tris(pyrazolyl) ligands. We describe here an adaptation of the previously published procedures for the synthesis of the electron-poor ligand tris(3,4,5-tribromopyrazol-1-yl)phosphine oxide, C9Br9N6OP. Similar electron-deficient ligands have been proven to unlock unique chemistry for the anionic scorpionates. The title perbrominated tris(pyrazolyl)phosphine oxide displays a network of halogen bonds in the solid state. All the bonds in the pyrazole ring are rather similar to the reported borate analogues, which makes this molecule promising as a ligand for applications where very electron-poor metal complexes are required.

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