scholarly journals Structural Evidence for Pnictogen-Centered Lewis Acidity in Cationic Platinum-Stibine Complexes Featuring Pendent Amino or Ammonium Groups

Molecules ◽  
2021 ◽  
Vol 26 (7) ◽  
pp. 1985
Author(s):  
Roberta R. Rodrigues ◽  
François P. Gabbaï
Keyword(s):  
Lewis Acids ◽  
Phenyl Group ◽  
Platinum Complexes ◽  
Lewis Acidity ◽  
Chloride Salt ◽  
Amino Group ◽  
Late Transition Metals ◽  
Late Transition ◽  
Weak Coordination ◽  
Methyl Phenyl

As part of our continuing interest in the chemistry of cationic antimony Lewis acids as ligands for late transition metals, we have now investigated the synthesis of platinum complexes featuring a triarylstibine ligand substituted by an o-[(dimethylamino)methyl]phenyl group referred to as ArN. More specifically, we describe the synthesis of the amino stibine ligand Ph2SbArN (L) and its platinum dichloride complex [LPtCl]Cl which exists as a chloride salt and which shows weak coordination of the amino group to the antimony center. We also report the conversion of [LPtCl]Cl into a tricationic complex [LHPt(SMe2)]3+ which has been isolated as a tris-triflate salt after reaction of [LPtCl]Cl with SMe2, HOTf and AgOTf. Finally, we show that [LHPt(SMe2)][OTf]3 acts as a catalyst for the cyclization of 2-allyl-2-(2-propynyl)malonate.

Transition Metal Chlorides Are Lewis Acids toward Terminal Chloride Attached to Late Transition Metals

2014 ◽  
Vol 53 (7) ◽  
pp. 3307-3310 ◽  
Author(s):  
Alice K. Hui ◽  
Brian J. Cook ◽  
Daniel J. Mindiola ◽  
Kenneth G. Caulton
Keyword(s):  
Transition Metal ◽  
Transition Metals ◽  
Lewis Acids ◽  
Metal Chlorides ◽  
Late Transition Metals ◽  
Late Transition

Organic synthesis with the most abundant transition metal–iron: from rust to multitasking catalysts

2021 ◽  
Author(s):  
Sujoy Rana ◽  
Jyoti Prasad Biswas ◽  
Sabarni Paul ◽  
Aniruddha Paik ◽  
Debabrata Maiti
Keyword(s):  
Transition Metal ◽  
Transition Metals ◽  
Organic Synthesis ◽  
Present Review ◽  
Synthetic Chemistry ◽  
Late Transition Metals ◽  
Iron Chemistry ◽  
Late Transition

The promising aspects of iron in synthetic chemistry are being explored for three-four decades as a green and eco-friendly alternative to late transition metals. This present review unveils these rich iron-chemistry towards different transformations.

scholarly journals A gold-catalyzed alkyne-diol cycloisomerization for the synthesis of oxygenated 5,5-spiroketals

2011 ◽  
Vol 7 ◽  
pp. 570-577 ◽  
Author(s):  
Sami F Tlais ◽  
Gregory B Dudley
Keyword(s):  
Transition Metal ◽  
Lewis Acids ◽  
Gold Catalysis ◽  
Late Transition Metal ◽  
Efficient Synthesis ◽  
Highly Efficient ◽  
Late Transition

A highly efficient synthesis of oxygenated 5,5-spiroketals was performed towards the synthesis of the cephalosporolides. Gold(I) chloride in methanol induced the cycloisomerization of a protected alkyne triol with concomitant deprotection to give a strategically hydroxylated 5,5-spiroketal, despite the potential for regiochemical complications and elimination to furan. Other late transition metal Lewis acids were less effective. The use of methanol as solvent helped suppress the formation of the undesired furan by-product. This study provides yet another example of the advantages of gold catalysis in the activation of alkyne π-systems.

Fe2CS2 MXene: a promising electrode for Al-ion batteries

Nanoscale ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 5324-5331 ◽  
Author(s):  
Sangjin Lee ◽  
Sung Chul Jung ◽  
Young-Kyu Han
Keyword(s):  
Transition Metals ◽  
Ion Transport ◽  
Fold Increase ◽  
Late Transition Metals ◽  
Late Transition

Using late transition metals and sulfur termination groups for MXene leads to 104-fold increase in Al-ion transport and 2.2-fold increase in Al-ion capacity, respectively.

PNP-Pincer-Type Phosphaalkene Complexes of Late Transition Metals

2016 ◽  
Vol 16 (5) ◽  
pp. 2314-2323 ◽  
Author(s):  
Fumiyuki Ozawa ◽  
Yumiko Nakajima
Keyword(s):  
Transition Metals ◽  
Late Transition Metals ◽  
Late Transition

scholarly journals Multiple Bonding Involving Late Transition Metals. The Case of a Silver−Oxo Complex.

2000 ◽  
Vol 39 (6) ◽  
pp. 1336-1336
Author(s):  
Thomas R. Cundari ◽  
Jeremy N. Harvey ◽  
Thomas R. Klinckman ◽  
Wentao Fu
Keyword(s):  
Transition Metals ◽  
Late Transition Metals ◽  
Multiple Bonding ◽  
Late Transition

Designing of Inorganic Al12N12 Nanocluster with Fe, Co, Ni, Cu and Zn Metals for Efficient Hydrogen Storage Materials

2021 ◽  
Vol 20 (04) ◽  
pp. 359-375
Author(s):  
Muhammad Yasir Mehboob ◽  
Fakhar Hussain ◽  
Riaz Hussain ◽  
Shaukat Ali ◽  
Zobia Irshad ◽  
...  
Keyword(s):  
Transition Metals ◽  
Hydrogen Storage ◽  
Density Functional ◽  
Hydrogen Adsorption ◽  
Chemical Hardness ◽  
Hydrogen Storage Materials ◽  
Late Transition Metals ◽  
Storage Materials ◽  
Late Transition ◽  
Cu And Zn

Hydrogen is considered as one of the attractive environmentally friendly materials with zero carbon emission. Hydrogen storage is still challenging for its use in various energy applications. That’s why hydrogen gained more and more attention to become a major fuel of today’s energy consumption. Therefore, nowadays, hydrogen storage materials are under extensive research. Herein, efforts are being devoted to design efficient systems which could be used for future hydrogen storage purposes. To this end, we have employed density functional theory (DFT) to optimize the geometries of the designed inorganic Al[Formula: see text]N[Formula: see text] nanoclusters with transition metals (Fe, Co, Ni, Cu and Zn). Various positions of metal encapsulated Al[Formula: see text]N[Formula: see text] are examined for efficient hydrogen adsorption. After adsorption of H2 on late transition metals encapsulated Al[Formula: see text]N[Formula: see text] nanocluster, different geometric parameters like frontier molecular orbitals, adsorption energies and nature bonding orbitals have been performed for exploring the potential of metal encapsulated for hydrogen adsorption. Moreover, molecular electrostatic potential (MEP) analysis was also performed in order to explore the different charge separation upon H2 adsorption on metals encapsulated Al[Formula: see text]N[Formula: see text] nanoclusters. Also, global indices of reactivity like ionization potential, electron affinity, electrophilic index, chemical softness and chemical hardness were also examined by using DFT. The adsorption energy results suggested encapsulation of late transition metals in Al[Formula: see text]N[Formula: see text] nanocage efficiently enhancing the adsorption capability of Al[Formula: see text]N[Formula: see text] for hydrogen adsorption. Results of all analysis suggested that our designed systems are efficient candidates for hydrogen adsorption. Thus, we recommended a novel kind of systems for hydrogen storage materials.

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