A Main‐Group Element Radical Based One‐Dimensional Magnetic Chain

The results of a survey of the crystal structures of main group element compounds (M = tin, lead, arsenic, antimony, bismuth, and tellurium) for intermolecular M⋯Se secondary bonding interactions is presented. The identified M⋯Se interactions in 58 crystals can operate independent of conventional supramolecular synthons and can sustain zero-, one-, two, and, rarely, three-dimensional supramolecular architectures, which are shown to adopt a wide variety of topologies. The most popular architecture found in the crystals stabilized by M⋯Se interactions are one-dimensional chains, found in 50% of the structures, followed by zero-dimensional (38%). In the majority of structures, the metal center forms a single M⋯Se contact; however, examples having up to three M⋯Se contacts are evident. Up to about 25% of lead(II)-/selenium-containing crystals exhibit Pb⋯Se tetrel bonding, a percentage falling off to about 15% in bismuth analogs (that is, pnictogen bonding) and 10% or lower for the other cited elements.

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Catalytic Fluorination of Boron Compounds at a Bismuth Redox Platform

10.26434/chemrxiv.9729143 ◽

2019 ◽

Author(s):

Oriol Planas ◽

Feng Wang ◽

Markus Leutzsch ◽

Josep Cornella

Keyword(s):

Transition Metal ◽

Main Group ◽

Group Element ◽

Oxidation States ◽

Boron Compounds ◽

Main Text ◽

Main Group Element ◽

Rational Ligand Design ◽

Supplementary Material

The ability of bismuth to maneuver between different oxidation states in a catalytic redox cycle, mimicking the canonical organometallic steps associated to a transition metal, is an elusive and unprecedented approach in the field of homogeneous catalysis. Herein we present a catalytic protocol based on bismuth, a benign and sustainable main-group element, capable of performing every organometallic step in the context of oxidative fluorination of boron compounds; a territory reserved to transition metals. A rational ligand design featuring hypervalent coordination together with a mechanistic understanding of the fundamental steps, permitted a catalytic fluorination protocol based on a Bi(III)/Bi(V) redox couple, which represents a unique example where a main-group element is capable of outperforming its transition metal counterparts.<br>A main text and supplementary material have been attached as pdf files containing all the methodology, techniques and characterization of the compounds reported.<br>

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Development of main group element digital encyclopedias as learning resources to support learning activities at home in COVID-19 pandemic condition

10.1063/5.0043251 ◽

2021 ◽

Author(s):

Munzil ◽

Sutrisno Sutrisno ◽

I. Wayan Dasna ◽

Sutandyo Dwija Laksmana

Keyword(s):

Main Group ◽

Group Element ◽

Learning Activities ◽

Learning Resources ◽

Main Group Element ◽

At Home

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Hydrodechlorination of Dichloromethane by a Metal‐Free Triazole‐Porphyrin Electrocatalyst: Demonstration of Main‐Group Element Electrocatalysis

Chemistry - A European Journal ◽

10.1002/chem.202005012 ◽

2021 ◽

Author(s):

Caroline Williams ◽

Amir Lashgari ◽

Nilakshi Devi ◽

Marcus Ang ◽

Ashwin Chaturvedi ◽

...

Keyword(s):

Main Group ◽

Group Element ◽

Metal Free ◽

Main Group Element

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Binuclear, oximate-bridged Co-main group element complexes–structures and properties

Inorganic Chemistry Communications ◽

10.1016/j.inoche.2012.03.040 ◽

2012 ◽

Vol 20 ◽

pp. 322-325 ◽

Cited By ~ 3

Author(s):

Małgorzata Hołyńska

Keyword(s):

Main Group ◽

Group Element ◽

Main Group Element ◽

Structures And Properties

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On the Coordination Role of Pyridyl-Nitrogen in the Structural Chemistry of Pyridyl-Substituted Dithiocarbamate Ligands

Crystals ◽

10.3390/cryst11030286 ◽

2021 ◽

Vol 11 (3) ◽

pp. 286

Author(s):

Edward R.T. Tiekink

Keyword(s):

Transition Metal ◽

Main Group ◽

Group Element ◽

Systematic Research ◽

Pyridyl Nitrogen ◽

General Observation ◽

Supramolecular Architectures ◽

Main Group Element ◽

Metal Dithiocarbamates

A search of the Cambridge Structural Database was conducted for pyridyl-substituted dithiocarbamate ligands. This entailed molecules containing both an NCS2− residue and pyridyl group(s), in order to study their complexation behavior in their transition metal and main group element crystals, i.e., d- and p-block elements. In all, 73 different structures were identified with 30 distinct dithiocarbamate ligands. As a general observation, the structures of the transition metal dithiocarbamates resembled those of their non-pyridyl derivatives, there being no role for the pyridyl-nitrogen atom in coordination. While the same is true for many main group element dithiocarbamates, a far greater role for coordination of the pyridyl-nitrogen atoms was evident, in particular, for the heavier elements. The participation of pyridyl-nitrogen in coordination often leads to the formation of dimeric aggregates but also one-dimensional chains and two-dimensional arrays. Capricious behaviour in closely related species that adopted very different architectures is noted. Sometimes different molecules comprising the asymmetric-unit of a crystal behave differently. The foregoing suggests this to be an area in early development and is a fertile avenue for systematic research for probing further crystallization outcomes and for the rational generation of supramolecular architectures.

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