Role of the Metal, Ligand, and Alkyl/Aryl Group in the Hydrolysis Reactions of Group 10 Organometallic Cations [(L)M(R)]+

2013 ◽  
Vol 32 (23) ◽  
pp. 6931-6944 ◽  
Author(s):  
Matthew J. Woolley ◽  
George N. Khairallah ◽  
Gabriel da Silva ◽  
Paul S. Donnelly ◽  
Brian F. Yates ◽  
...  
Keyword(s):  
Alkyl Aryl ◽  
Aryl Group ◽  
Group 10 ◽  
Organometallic Cations ◽  
Metal Ligand ◽  
Hydrolysis Reactions

Metal-Metal Cooperative Bond Activation by Heterobimetallic Alkyl, Aryl, and Acetylide PtII/CuI Complexes

2020 ◽  
Author(s):  
Shubham Deolka ◽  
Orestes Rivada Wheelaghan ◽  
Sandra Aristizábal ◽  
Robert Fayzullin ◽  
Shrinwantu Pal ◽  
...  
Keyword(s):  
Alkyl Group ◽  
Bond Activation ◽  
Bond Cleavage ◽  
Terminal Alkyne ◽  
Alkyl Aryl ◽  
Metal Metal ◽  
The Stability ◽  
Selective Formation ◽  
Organoplatinum Compounds

We report selective formation of heterobimetallic PtII/CuI complexes that demonstrate how facile bond activation processes can be achieved by altering reactivity of common organoplatinum compounds through their interaction with another metal center. The interaction of the Cu center with Pt center and with a Pt-bound alkyl group increases the stability of PtMe2 towards undesired rollover cyclometalation. The presence of the CuI center also enables facile transmetalation from electron-deficient tetraarylborate [B(ArF)4]- anion and mild C-H bond cleavage of a terminal alkyne, which was not observed in the absence of an electrophilic Cu center. The DFT study indicates that the role of Cu center acts as a binding site for alkyne substrate, while activating its terminal C-H bond.

Role of Metal–Ligand Bond Strength and Phase Separation on the Mechanical Properties of Metallopolymer Films

2013 ◽  
Vol 46 (14) ◽  
pp. 5416-5422 ◽  
Author(s):  
Aaron C. Jackson ◽  
Frederick L. Beyer ◽  
Samuel C. Price ◽  
B. Christopher Rinderspacher ◽  
Robert H. Lambeth
Keyword(s):  
Mechanical Properties ◽  
Phase Separation ◽  
Bond Strength ◽  
Metal Ligand ◽  
Ligand Bond

Two complimentary approaches for the synthesis and isolation of stable phosphanylphosphaalkenes

2021 ◽  
Author(s):  
Aleksandra Ziółkowska ◽  
Natalia Szynkiewicz ◽  
Łukasz Ponikiewski
Keyword(s):  
General Formula ◽  
Alkyl Aryl ◽  
Aryl Group

Phospha-Wittig (phosphanylphosphinidene titanium(IV) complex) and phospha-Peterson (lithiated diphosphane) reactions were used to obtain phosphanylphosphaalkenes with the general formula XYC=P-PtBu2 (X = alkyl, aryl group or H; Y = alkyl or...

scholarly journals The Role of Proton Shuttles in the Reversible Activation of Hydrogen via Metal–Ligand Cooperation

2019 ◽  
Vol 141 (43) ◽  
pp. 17350-17360 ◽  
Author(s):  
Nicholas E. Smith ◽  
Wesley H. Bernskoetter ◽  
Nilay Hazari
Keyword(s):  
Metal Ligand

Reductive Condensation of a Nitro Group with Carboxylic Acids Promoted by Phosphorus(III) Compounds: A Short Route to 5H-Dibenzo[b,e][1,4]diazepin-11(10H)-ones

Synthesis ◽  
2020 ◽  
Author(s):  
Zbigniew Wróbel ◽  
Michał Tryniszewski ◽  
Robert Bujok ◽  
Roman Gańczarczyk
Keyword(s):  
Nitro Group ◽  
Carboxylic Acids ◽  
Carboxyl Group ◽  
Short Route ◽  
Step Method ◽  
One Pot ◽  
Aryl Group ◽  
Intramolecular Condensation ◽  
Reductive Condensation

Tributyl- or triphenylphosphine promotes a one-pot, three-step method for the synthesis of differently substituted dibenzodiazepinones from N-aryl-2-nitroanilines. Pyridine analogues and the corresponding thiazepinones can also be formed using this method. The process involves deoxygenation of the nitro group, then formation of an iminophosphorane intermediate and its intramolecular condensation with a carboxyl group placed in the N-aryl group. The role of the carboxyl group in the formation of the iminophosphorane and the mode of cyclization are discussed.

Notizen: Zum Verständnis der zentralen Rolle des Schwefels in Multi-Metall-Aggregaten mit verschiedener Elektronenpopulation: [S2WS2CoS2WS2]n- (n = 2, 3)/On the Central Role of Sulfur in Multi Metal Aggregates with Different Electron Populations: [S2WS2CoS2WS2]n-(n = 2, 3)

1983 ◽  
Vol 38 (4) ◽  
pp. 528-529 ◽  
Author(s):  
Achim Müller ◽  
Winfried Hellmann ◽  
Uwe Schimanski ◽  
Rainer Jostes ◽  
William E. Newton
Keyword(s):  
Structure Analysis ◽  
Electron Population ◽  
X Ray ◽  
Ligand System ◽  
Physical Measurements ◽  
Theoretical Investigations ◽  
Additional Charge ◽  
Metal Ligand

Abstract The hetero metal sulfur aggregates [Co(WS4)2] n- (with variable electron population: n = 2, 3) could be isolated as salts and characterized by physical measurements (in-cluding X-ray structure analysis). Experimental and theoretical investigations show that due to a strong metal → ligand electron delocalisation WS42-(like MOS42-) is a non-innocent ligand and that the additional charge upon reduction is located mainly at the S atoms of the ligand system.

A Two-Step Catalytic Cycle for the Acceptorless Dehydrogenation of Ethane by Group 10 Metal Complexes: Role of the Metal in Reactivity and Selectivity

2020 ◽  
Vol 39 (22) ◽  
pp. 4027-4036
Author(s):  
Kevin Parker ◽  
Geethika K. Weragoda ◽  
Allan J. Canty ◽  
Anastasios Polyzos ◽  
Victor Ryzhov ◽  
...  
Keyword(s):  
Metal Complexes ◽  
Catalytic Cycle ◽  
Group 10

scholarly journals Antimicrobial and Antioxidant Activities of Diorganotin(IV) Complexes Synthesized from 1,2,4-Triazole Derivatives

2020 ◽  
Vol 32 (10) ◽  
pp. 2553-2558
Author(s):  
Jyoti Yadav ◽  
Jai Devi
Keyword(s):  
Schiff Base ◽  
Antioxidant Activities ◽  
Azomethine Nitrogen ◽  
Spectroscopic Techniques ◽  
Schiff Base Ligands ◽  
Alkyl Aryl ◽  
Aryl Group ◽  
Ft Ir ◽  
Tin Metal

Novel diorganotin(IV) complexes were synthesized from 1,2,4-triazole Schiff base ligands which were synthesized by reaction between the 4-amino-5-phenyl-1,2,4-triazole-3-thiol and salicyaldehyde derivatives. The bonding and geometry of the diorganotin(IV) complexes were evaluated by using different spectroscopic techniques such as FT-IR, mass, 1H, 13C & 119Sn NMR. The different spectroscopic techniques revealed the tridentate (ONS) mode of chelation of Schiff base ligands and pentacoordinated environment around the central tin metal which was satisfied with azomethine nitrogen, phenolic oxygen, thiolic sulfur and metal-carbon bond of alkyl/aryl group. The Schiff base ligands and their organotin(IV) complexes were tested for their in vitro antimicrobial and antioxidant activities to examine the biological outline of complexes in comparison to standard drugs. The results of activities data revealed that diorganotin(IV) complexes are more active than Schiff base ligands and some diorganotin(IV) complexes are even more active than the standard drugs. In all the synthesized complexes, compound 9 (Bu2SnL2) and 10 (Ph2SnL2) were most potent and can be used in future clinical trials.

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