N-heterocyclic carbene ligands
Heterogenized n-heterocyclic carbene metal complexes for selective catalysis
... In contrast, homogeneous catalysis is more related to the field of fine chemistry, although some industrially relevant processes for the production of bulk chemicals also rely on homogeneous catalysis (Scheme 1.1 and ...
292
Chemistry of water soluble N heterocyclic carbene platinum complexes
... from the silver oxide/silver chloride precipitate) were prepared. One of these samples was heated for 24 h at 90 °C and showed no apparent changes in the composition of the 2a/1a mixture. This result clearly indicates ...
352
A nano sized Janus di N heterocyclic carbene ligand based on a quinoxalinophenanthrophenazine core, and its coordina tion to iridium
... functional ligands is playing a dominant role. Bis(NHC) ligands with rigid polyaromatic linkers constitute excel-‐ lent building blocks for the preparation of discrete mo-‐ lecular species and ...
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Catalytic applications of magnetic nanoparticles functionalized using iridium N heterocyclic carbene complexes
... can be easily removed by simple filtration. The problem arises mostly from selectivity. Over the last decade the use of magnetic nanoparticles functionalized with transition metal for applications in catalysis has ...
20
Endocrine disruptors as ligands of breast cancer proteins
... 16. Frisch, M. J.; Trucks, G. W.; Schlegel, H. B.; Scuseria, G. E.; Robb, M. A.; Cheeseman, J. R.; Montgomery, J. A.; Vreven, T.; Kudin, K. N.; Burant, J. C.; Millam, J. M.; Iyengar, S. S.; Tomasi, J.; Barone, V.; ...
175
Homo and Heteropolymetallic Group 4 Molecular Nitrides
... The reduced species 14 retains one potassium cation as part of the structure according to analytical data and presumably has a polymeric structure. Despite considerable efforts we could not grow suitable crystals of 14 ...
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TítuloDeveloping the family of picolinate ligands for Mn2+ complexation
... All the equilibrium measurements were conducted at a constant ionic strength maintained by 0.15 M NaCl at 298 K. The protonation constants of the DPAAA 3− and DPAPhA 2− ligands were determined by pH- ...
21
Ruthenium(II)–carbonyl complexes containing two N monodentate 1,8 naphthyridine ligands: active catalysis in transfer hydrogenation reactions
... multifunctional ligands that act as bidentate poly- pyridyl ...1,8-naphthyridine-type ligands have been reported for 2-(pyridin-2-yl)-1,8-naphthyridine, where the pyridine group increases the bite angle, ...
20
Ligand effects on the optical and chiroptical properties of the thiolated Au18cluster
... their contribution to the energy levels was determined. The energy level diagrams are included in Fig. S10 (ESI†) and they reveal that the oxygen atoms, in the cluster protected by p-MBA, make an important contribution ...
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Abnormal ring closure and oxidation in situ of 2- Hydroxy-5- nitrobenzaldehyde in the hantzch synthesis
... El presente trabajo toma esta opción propuesta por esta facultad, presentandose aquí el articulo: Abnormal Ring Closure and Oxidation i.n situ.. Heterocyclic Che.rn, 32.[r] ...
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TítuloStable Mn2+, Cu2+ and Ln3+ complexes with cyclen based ligands functionalized with picolinate pendant arms
... Mn 2+ complexes are known to form kinetically less inert complexes than the Ln 3+ ions, and thus their inertness can be easily accessed by following the transmetallation reactions occurring between the Mn 2+ complexes ...
25
ReI(CO)3 complexes with diimine ligands synthesized in situ
... Therefore, C- or N-coordination of the triazole ring are obtained by choosing either stoichiometric or catalytic conditions. The unprecedent process leading to this polymetallic species is rationalized by the ...
25
Involvement of the receptor for advanced glycation end products in liver transplantation
... At baseline, among the RAGE-ligands CML plas- ma levels were higher in LT recipients than donors (p = 0.02) (Figure 1A) and decreased immediately after graft reperfusion (p < 0.0001) to return to baseline ...
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Synthesis, characterization, determination of luminescent properties of tetracoordinate organoboron compounds derivatives from organic tridentate ligands, and their potential application in OLEDs
... bidentate ligands with interesting photo, and electroluminescent ...tridentate ligands have been scarcely ...tridentate ligands with potential application as emitter material, and an electron ...
131
Lewis Base Behavior of Bridging Nitrido Ligands of Titanium Polynuclear Complexes
... For the addition of one unit of copper halide to 2’, the computed formation energy values range from -194 to -180 kJ·mol -1 , and the copper-nitrogen distances range from 1.824 to 1.840 Å. These calculated Cu-N ...
42
How Changing the Bridgehead Can Affect the Properties of Tripodal Ligands
... 6 to bis-N-donor/Bi-acceptor in 8 is not just a solid-state effect, but can be demonstrated by the addition of an excess of a chloride source (tetrabutylammonium chloride, TBACl) to 6 in MeCN, which gives 8 ...
5
Estudi teòric de reaccions catalitzades per complexos d’or: cicloaddicions amb al·lens i oxidació d’alquins
... The proposed mechanistic divergence from the seven-membered ring gold carbene intermediate 3-PO is also in agreement with experimental findings which indicate that the [4C+2C] and [4C+3C][r] ...
288
Gold (i)-catalyzed cyclizations of 1,6- and 1,7-enynes: new gold complexes and cyclopropanation reactions
... The reason behind the stability and high activity of this family of biphenyl phosphine ligands, which are also referred to as Buchwald phosphines (Figure 8), has been the subject of numerous studies. 24a,e They ...
332
Título1,4,7‐triazacyclononane‐based bifunctional picolinate ligands for efficient copper complexation
... the ligands coordinated to the metal ions in [Cu(no2pa1py)] and [Cu(no3pa)] – are provided by the three nitrogen atoms of the tacn moiety, an oxygen atom and a nitrogen atom from a picolinate moiety, and a ...
18
Selective palladium catalyzed amination of the heterocyclic core of variolins
... 4. (a) Anderson, R. J.; Hill, J. B.; Morris, J. C. J. Org. Chem. 2005, 70, 6204–6212; (b) Karpov, A. S.; Merkul, E.; Rominger, F.; Mu¨ller, T. J. J. Angew. Chem., Int. Ed. 2005, 44, 6951–6956; (c) Ahaidar, A.; ...
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