A monoanionic pentadentate ligand platform for scandium-pnictogen multiple bonds

Chemical Communications ◽

10.1039/d1cc03481b ◽

2021 ◽

Author(s):

Evan A. Patrick ◽

Yan Yang ◽

Warren Piers ◽

Laurent Maron ◽

Benjamin Sidney Gelfand

Keyword(s):

Multiple Bonds ◽

Pentadentate Ligand

A new monoanionic pentadentate ligand is designed to accommodate Sc=E bonds (E = N, P). The imido complex is stable enough to isolate and characterize, and reacts rapidly with CO2....

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A monoanionic pentadentate ligand platform for scandium-pnictogen multiple bonds

10.33774/chemrxiv-2021-mwk57 ◽

2021 ◽

Author(s):

Warren Piers ◽

Evan Patrick ◽

Yan Yang ◽

Laurent Maron ◽

Benjamin Gelfand

Keyword(s):

Multiple Bonds ◽

Pentadentate Ligand

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Oxygen-Oxygen Bond Cleavage and Formation in Co(II) Mediated Stoichiometric O2 Reduction via the Potential Intermediacy of a Co(IV) Oxyl Radical

10.26434/chemrxiv.7176392 ◽

2018 ◽

Author(s):

Lucie Nurdin ◽

Denis M. Spasyuk ◽

Laura Fairburn ◽

Warren Piers ◽

Laurent Maron

Keyword(s):

Bond Cleavage ◽

Peroxo Complex ◽

Oxygen Oxygen ◽

O2 Reduction ◽

Oxygen Bond ◽

Pentadentate Ligand

Diprotonation of a remarkably stable, toluene soluble cobalt peroxo complex supported by a neutral, dianionic pentadentate ligand leads to facile O-O bond cleavage and production of a highly reactive Co(IV) oxyl cation intermediate that dimerizes and releases O2. These processes are relevant to both O2 reduction and O2 evolution and the mechanism was probed in detail both experimentally and computationally.

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To Bend or Not to Bend, the Dilemma of Multiple Bonds

10.26434/chemrxiv.8066747.v1 ◽

2019 ◽

Author(s):

Michele Pizzocchero ◽

Matteo Bonfanti ◽

Rocco Martinazzo

Keyword(s):

First Principles ◽

2D Materials ◽

Main Group ◽

First Principles Calculations ◽

Group 14 ◽

Multiple Bonds ◽

Main Group Elements ◽

Structural Distortions

The manuscript addresses the issue of the structural distortions occurring at multiple bonds between high main group elements, focusing on group 14. These distortions are known as trans-bending in silenes, disilenes and higher group analogues, and buckling in 2D materials likes silicene and germanene. A simple but correlated \sigma + \pi model is developed and validated with first-principles calculations, and used to explain the different behaviour of second- and higher- row elements.

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Activation of ammonia and hydrazine by electron rich Fe(ii) complexes supported by a dianionic pentadentate ligand platform through a common terminal Fe(iii) amido intermediate

Chemical Science ◽

10.1039/d0sc06466a ◽

2021 ◽

Author(s):

Lucie Nurdin ◽

Yan Yang ◽

Peter G. N. Neate ◽

Warren E. Piers ◽

Laurent Maron ◽

...

Keyword(s):

Transition Metal ◽

Ammonia Oxidation ◽

Oxidation Processes ◽

Pentadentate Ligand

Synopsis: a highly reactive Fe(iii)–NH2 complex is generated via activation of ammonia or hydrazine in reactions of relevance to fundamental steps in ammonia oxidation processes mediated by an abundant, first row transition metal.

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