Silver Triflate/ N ‐Fluorobenzenesulfonimide‐Catalyzed Cycloisomerization of Tryptamine‐Ynamide to Spiro[indoline‐3,4′‐piperidine] Induced by Cation‐π‐π Interactions between Substrate and Metal Ligand

2019 ◽  
Vol 362 (1) ◽  
pp. 192-205 ◽  
Author(s):  
Guoduan Liang ◽  
Yanjun Ji ◽  
Hairui Liu ◽  
Yadong Pang ◽  
Bojun Zhou ◽  
...  
Keyword(s):  
Π Interactions ◽  
Silver Triflate ◽  
Metal Ligand

Metal Ligand Aromatic Cation—π Interactions

ChemInform ◽  
2003 ◽  
Vol 34 (35) ◽  
Author(s):  
Snezana D. Zaric
Keyword(s):  
Π Interactions ◽  
Metal Ligand

Metal Ligand Aromatic Cation−π Interactions

2003 ◽  
Vol 2003 (12) ◽  
pp. 2197-2209 ◽  
Author(s):  
Snežana D. Zarić
Keyword(s):  
Π Interactions ◽  
Metal Ligand

A flexible dibenzo-O4S2-macrocycle: twist-and-squeeze type metal binding via synergic action of metal–ligand and metal–π interactions

2007 ◽  
Vol 48 (48) ◽  
pp. 8464-8467 ◽  
Author(s):  
Hyun Jee Kim ◽  
Il Yoon ◽  
So Young Lee ◽  
Joobeom Seo ◽  
Shim Sung Lee
Keyword(s):  
Metal Binding ◽  
Π Interactions ◽  
Metal Ligand

Metal‐Ligand π Interactions in Lithium‐Rich Li 2 RhO 3 Cathode Material Activate Bimodal Anionic Redox

2021 ◽  
pp. 2100892
Author(s):  
Kun Zhang ◽  
Zewen Jiang ◽  
Fanghua Ning ◽  
Biao Li ◽  
Huaifang Shang ◽  
...  
Keyword(s):  
Cathode Material ◽  
Π Interactions ◽  
Metal Ligand

Intramolecular MLOH/π and MLNH/π interactions in crystal structures of metal complexes

2009 ◽  
Vol 63 (3) ◽  
Author(s):  
Goran Janjić ◽  
Miloš Milčić ◽  
Snežana Zarić
Keyword(s):  
Hydrogen Atom ◽  
Metal Complexes ◽  
Crystal Structures ◽  
Transition Metal Complexes ◽  
Aqua Ligand ◽  
Intramolecular Interactions ◽  
Π Interactions ◽  
Structural Database ◽  
Positively Charged ◽  
Metal Ligand

AbstractIntramolecular metal-ligand OH/π (MLOH/π) and metal-ligand NH/π (MLNH/π) interactions in transition metal complexes between aqua or ammine ligand and ligand containing a C6-aromatic ring were investigated in crystal structures deposited in the Cambridge Structural Database (CSD). These intramolecular interactions appear in 38 structures with aqua ligand as the hydrogen atom donor and in 10 structures with ammine ligand as the hydrogen atom donor. Among all these complexes only one is negatively charged, 14 are positively charged and 33 are neutral indicating that the overall charge of the molecule has an influence on the XH/π (X = O or N) interactions. Energy estimated by DFT calculations is approximately 19 kJ mol−1 for the MLOH/π interactions and approximately 15 kJ mol−1 for the MLNH/π interactions.

IR, 31P-, 55 Mn-und 185,187 Re-NMR spektroskopische Untersuchungen an einigen Carbonylmangan-und -rhenium-Komplexen/IR, 31P, 55Mn and 185,187Re NMR Spectroscopic Investigations of Some Carbonylmanganese and -rhenium Complexes

1981 ◽  
Vol 36 (1) ◽  
pp. 20-26 ◽  
Author(s):  
Ahmet Keçeci ◽  
Dieter Rehder
Keyword(s):  
Spectroscopic Data ◽  
Nmr Spectra ◽  
Rhenium Complexes ◽  
Ir And Nmr Spectra ◽  
Π Interactions ◽  
Spectroscopic Investigations ◽  
Ligand System ◽  
Nmr Data ◽  
Rhenium Compound ◽  
Metal Ligand

Abstract The IR and NMR spectra of the complexes [M(CO)6]Cl · HCl (M = Mn: 1, M = Re: 2), M(C0)5C02Et (M = Mn: 3, M = Re: 4), [Mn(CO)5PR3][PF6] (5; PR3 = PPh(OPh)2: a, P(n-Pr)3: b, PHPh2: c, PPh(NEt2)2: d, P(p-C6H4F)3: e), [Re(CO)5PHPh2][PF6] (6 c), Mn2(CO)8(PR3)2 (7) and Re2(CO)8(PHPh2)2 (8c) are discussed in the context of σ-and π-interactions in the metal-ligand system and compared with 51V NMR data of the analogous isoelectronic and isostructural carbonylvanadates (-I). On the basis of these results, the phosphines are arranged in the order of decreasing integral ligand strength according to a>b>c>d. The 55Mn shielding of 5 is greater than that of 1, which is explained by strong σ-interactions and correspondingly large e-a1* splitting dominating the paramagnetic deshielding term in the pseudooctahedral complexes of type 5. The only rhenium compound accessible to NMR is 2, for which the 185 Re and 187 Re resonances were obtained. 31P coordination shifts are positive for all complexes. Spectroscopic data for 7c show that this complex presumably has the structure (CO)5Mn-Mn(CO)3(PHPh2)2, contrasting 7a, 7b, 7d and 7e (local D4d symmetry).

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