Gas-phase reactivity of Cp* group IX metal complexes bearing aromatic N,N′-chelating ligands

2017 ◽  
Vol 41 (15) ◽  
pp. 6995-7006 ◽  
Author(s):  
Christian Kerner ◽  
Jens P. Neu ◽  
Maximilian Gaffga ◽  
Johannes Lang ◽  
Benjamin Oelkers ◽  
...  
Keyword(s):  
Metal Complexes ◽  
Gas Phase ◽  
Metal Center ◽  
Chelating Ligands ◽  
Chelate Ligand

Compounds of the type [(η5-Cp*)M(Cl)(N,N′)]+ bearing N,N′-coordinating ligands show different modes of HCl cleavage depending on the nature of the N,N′-chelate ligand and the metal center.

A convenient access to N-phosphonio-substituted NHC metal complexes [M = Ag(i), Rh(i), Pd(ii)]

2017 ◽  
Vol 46 (36) ◽  
pp. 12293-12305 ◽  
Author(s):  
Idir Benaissa ◽  
Rachid Taakili ◽  
Noël Lugan ◽  
Yves Canac
Keyword(s):  
Metal Complexes ◽  
Metal Center ◽  
Convenient Access

NHC Pd(ii) complexes featuring a propyl bridge were ionized by the introduction of a phosphonium moiety, which may coordinate to the metal center or remain pendant.

Übergangsmetallkomplexe mit Schwefelliganden, LXV. Diastereospezifische Alkylierung von [Mo(NO)2(′S2′)2]2- zu chiralen [Mo(NO)2(′RS4')]-Komplexen mit chirotopen und prostereogenen Mo-Zentren / Transition Metal Complexes with Sulfur Ligands, LXV. Diastereospecific Alkylation of [Mo(NO)2(′S2')2]2- to Chiral [Mo(NO)2(′RS4')] Complexes with Chirotopic and Prostereogenic Mo-Centers

1991 ◽  
Vol 46 (10) ◽  
pp. 1343-1348 ◽  
Author(s):  
Dieter Sellmann ◽  
Franz Grasser ◽  
Falk Knoch ◽  
Matthias Moll
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Parent Compound ◽  
Metal Center ◽  
Chiral Complexes ◽  
Metal Centers ◽  
Electronic Character

In order to investigate how chirotopicity and stereogenicity of metal centers influence the enantioselectivity of metal centered reactions the stereogenic properties of metal centers in chiral complexes have to be varied without changing their electronic character. Diastereospecific alkylation of [Mo(NO)2(′S2′ )2]2- by racemic 1,2-dibromopropane and 1,2-dibromobutane yields the title complexes [Mo(NO)2(′MeS4′ )] and [Mo(NO)2(′EtS4′)] that differ from the parent compound [Mo(NO)2('S4′)] with respect to the stereogenicity of the metal center and allow future investigations of the question raised above.

Gas-Phase Hydrogenation with Parahydrogen Over Immobilized Vaska’s Complex

2017 ◽  
Vol 231 (3) ◽  
Author(s):  
Ivan V. Skovpin ◽  
Vladimir V. Zhivonitko ◽  
Igor P. Prosvirin ◽  
Dzhalil F. Khabibulin ◽  
Igor V. Koptyug
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
Gas Phase ◽  
Transition Metal Complexes ◽  
Iridium Complex ◽  
Nuclear Spins ◽  
Reaction Conditions ◽  
Major Drawback ◽  
Hydrogenation Catalysts ◽  
Immobilized Complexes

AbstractGenerating parahydrogen-induced polarization (PHIP) of nuclear spins with immobilized transition metal complexes as hydrogenation catalysts allows one to produce pure hyperpolarized substances, which can open new revolutionary perspectives for PHIP applications. A major drawback of immobilized complexes is their low stability under reaction conditions. In the present work we studied an immobilized iridium complex, Ir/SiO

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