scholarly journals Molecular recognition of polar neutral molecules by metallomacrocycles: synthesis, proton NMR spectroscopy, x-ray structure, electrochemistry, and ab initio calculations

1991 ◽  
Vol 56 (21) ◽  
pp. 6083-6094 ◽  
Author(s):  
Arie R. Van Doorn ◽  
Robert Schaafstra ◽  
Martinus Bos ◽  
Sybolt Harkema ◽  
Johan Van Eerden ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Molecular Recognition ◽  
Ab Initio Calculations ◽  
Ab Initio ◽  
Proton Nmr ◽  
Proton Nmr Spectroscopy ◽  
X Ray

ChemInform Abstract: Molecular Recognition of Polar Neutral Molecules by Metallomacrocycles: Synthesis, 1H NMR Spectroscopy, X-Ray Structure, Electrochemistry, and ab initio Calculations.

ChemInform ◽  
2010 ◽  
Vol 23 (11) ◽  
pp. no-no
Author(s):  
A. R. VAN DOORN ◽  
R. SCHAAFSTRA ◽  
M. BOS ◽  
S. HARKEMA ◽  
J. VAN EERDEN ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Molecular Recognition ◽  
Ab Initio Calculations ◽  
Ab Initio ◽  
1H Nmr ◽  
1H Nmr Spectroscopy ◽  
X Ray

scholarly journals Molecular recognition of neutral molecules by metalloclefts: synthesis, x-ray structure, proton NMR spectroscopy, electrochemistry, and molecular modeling

1991 ◽  
Vol 56 (7) ◽  
pp. 2371-2380 ◽  
Author(s):  
Arie R. Van Doorn ◽  
Martinus Bos ◽  
Sybolt Harkema ◽  
Johan Van Eerden ◽  
Willem Verboom ◽  
...  
Keyword(s):  
Molecular Modeling ◽  
Nmr Spectroscopy ◽  
Molecular Recognition ◽  
Proton Nmr ◽  
Proton Nmr Spectroscopy ◽  
X Ray

scholarly journals Magneto-Structural Characterization of Metallocene-Bridged Nitronyl Nitroxide Diradicals by X-Ray, Magnetic Measurements, Solid-state NMR Spectroscopy, and Ab Initio Calculations

2004 ◽  
Vol 10 (14) ◽  
pp. 3354-3354
Author(s):  
Christian Sporer ◽  
Henrike Heise ◽  
Klaus Wurst ◽  
Daniel Ruiz-Molina ◽  
Holger Kopacka ◽  
...  
Keyword(s):  
Solid State ◽  
Nmr Spectroscopy ◽  
Ab Initio Calculations ◽  
Ab Initio ◽  
Structural Characterization ◽  
Solid State Nmr ◽  
Magnetic Measurements ◽  
Nitronyl Nitroxide ◽  
X Ray

Conformation of two 4'-thio-2'-deoxynucleoside analogs studied by 5000-MHz proton NMR spectroscopy and x-ray crystallography.

1992 ◽  
Vol 114 (25) ◽  
pp. 9936-9943 ◽  
Author(s):  
Leo H. Koole ◽  
Janez Plavec ◽  
Hongying Liu ◽  
Beverly R. Vincent ◽  
Michael R. Dyson ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Proton Nmr ◽  
Proton Nmr Spectroscopy ◽  
X Ray ◽  
X Ray Crystallography

Organometallic chemistry of vanadium(III) based on the vanadium-dibenzotetramethyltetraaza[14]annulene moiety: synthesis, structural studies by x-ray and proton NMR spectroscopy, and reactivity of vanadium-carbon functionalities

1992 ◽  
Vol 31 (1) ◽  
pp. 96-101 ◽  
Author(s):  
Euro Solari ◽  
Stefania De Angelis ◽  
Carlo Floriani ◽  
Angiola Chiesi-Villa ◽  
Corrado Rizzoli
Keyword(s):  
Nmr Spectroscopy ◽  
Organometallic Chemistry ◽  
Proton Nmr ◽  
Structural Studies ◽  
Proton Nmr Spectroscopy ◽  
X Ray

Synthesis and crystal structure of a new homoleptic tetraarylruthenium(IV) complex Ru(2,4,5-Me3C6H2)4

2017 ◽  
Vol 72 (7) ◽  
pp. 523-525
Author(s):  
Chang-Jiu Wang ◽  
Xiu-Li Wu ◽  
Xiu-Fang Ma ◽  
Ai-Quan Jia ◽  
Qian-Feng Zhang
Keyword(s):  
Crystal Structure ◽  
Nmr Spectroscopy ◽  
Column Chromatography ◽  
Proton Nmr ◽  
Proton Nmr Spectroscopy ◽  
Synthesis And Crystal Structure ◽  
X Ray ◽  
X Ray Crystallography ◽  
Moderate Yield

AbstractTreatment of [Ru(acac)3] (acac−=acetylacetonate) with (2,4,5-Me3C6H2)MgBr, followed by column chromatography in air, afforded the homoleptic tetraaryl-ruthenium(IV) complex [Ru(2,4,5-Me3C6H2)4] (1) in moderate yield. The product was characterized by proton NMR spectroscopy and microanalyses. Its crystal structure has also been established by X-ray crystallography.

scholarly journals Ortho-Phenylene-Based Macrocyclic Hydrocarbons Assembled Using Olefin Metathesis

2020 ◽  
Author(s):  
Viraj kirinda ◽  
Briana Schrage ◽  
Christopher Ziegler ◽  
Scott Hartley
Keyword(s):  
Nmr Spectroscopy ◽  
Ab Initio Calculations ◽  
Ab Initio ◽  
Olefin Metathesis ◽  
Secondary Structures ◽  
Higher Order ◽  
Order Structure ◽  
X Ray ◽  
X Ray Crystallography ◽  
Simple Strategy

While many foldamer systems reliably fold into well-defined secondary structures, higher order structure remains a challenge. A simple strategy for the organization of folded subunits in space is to link them together within a macrocycle. Previous work has shown that o-phenylenes can be co-assembled with rod-shaped linkers into twisted macrocycles, showing an interesting synergy between folding and thermodynamically controlled macrocyclization. In these systems the foldamer units were largely decoupled from each other both conformationally and electronically. Here, we show that hydrocarbon macrocycles, with very short ethenylene linkers, can be assembled from o-phenylenes using olefin metathesis. Characterization by NMR spectroscopy, X-ray crystallography, and ab initio calculations shows that the products are approximately triangular [3+3] macrocycles with helical o-phenylene corners in a heterochiral configuration. Their photophysics are dominated by the 4,4′-diphenylstilbene moieties, the longest conjugated segments, with further conjugation broken by the twisting of the o-phenylenes.

ChemInform Abstract: BRIDGED HELICENES- 3,15-ETHANO- AND 3,15-(2-OXAPROPANO)-(7)HELICENE. SYNTHESIS, PROTON NMR SPECTROSCOPY AND X-RAY DIFFRACTION STUDY

1977 ◽  
Vol 8 (32) ◽  
pp. no-no
Author(s):  
M. JOLY ◽  
N. DEFAY ◽  
R. H. MARTIN ◽  
J. P. DECLERQ ◽  
G. GERMAIN ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Diffraction Study ◽  
Proton Nmr ◽  
Proton Nmr Spectroscopy ◽  
X Ray Diffraction ◽  
X Ray

Magneto-Structural Characterization of Metallocene-Bridged Nitronyl Nitroxide Diradicals by X-Ray, Magnetic Measurements, Solid-state NMR Spectroscopy, and Ab Initio Calculations

2004 ◽  
Vol 10 (6) ◽  
pp. 1355-1365 ◽  
Author(s):  
Christian Sporer ◽  
Henrike Heise ◽  
Klaus Wurst ◽  
Daniel Ruiz-Molina ◽  
Holger Kopacka ◽  
...  
Keyword(s):  
Solid State ◽  
Nmr Spectroscopy ◽  
Ab Initio Calculations ◽  
Ab Initio ◽  
Structural Characterization ◽  
Solid State Nmr ◽  
Magnetic Measurements ◽  
Nitronyl Nitroxide ◽  
X Ray

scholarly journals Ortho-Phenylene-Based Macrocyclic Hydrocarbons Assembled Using Olefin Metathesis

2020 ◽  
Author(s):  
Viraj kirinda ◽  
Briana Schrage ◽  
Christopher Ziegler ◽  
Scott Hartley
Keyword(s):  
Nmr Spectroscopy ◽  
Ab Initio Calculations ◽  
Ab Initio ◽  
Olefin Metathesis ◽  
Secondary Structures ◽  
Higher Order ◽  
Order Structure ◽  
X Ray ◽  
X Ray Crystallography ◽  
Simple Strategy

While many foldamer systems reliably fold into well-defined secondary structures, higher order structure remains a challenge. A simple strategy for the organization of folded subunits in space is to link them together within a macrocycle. Previous work has shown that o-phenylenes can be co-assembled with rod-shaped linkers into twisted macrocycles, showing an interesting synergy between folding and thermodynamically controlled macrocyclization. In these systems the foldamer units were largely decoupled from each other both conformationally and electronically. Here, we show that hydrocarbon macrocycles, with very short ethenylene linkers, can be assembled from o-phenylenes using olefin metathesis. Characterization by NMR spectroscopy, X-ray crystallography, and ab initio calculations shows that the products are approximately triangular [3+3] macrocycles with helical o-phenylene corners in a heterochiral configuration. Their photophysics are dominated by the 4,4′-diphenylstilbene moieties, the longest conjugated segments, with further conjugation broken by the twisting of the o-phenylenes.

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