The Cube-Shaped Main Group Element Clusters (Bi4S4)4+ and (Bi4Se4)4+ - Synthesis from Chloroaluminate Melts, Crystal Structures and Vibrational Spectra

2004 ◽  
Vol 630 (13-14) ◽  
pp. 2512-2519 ◽  
Author(s):  
Johannes Beck ◽  
Stefan Schl�ter ◽  
Nicolay Zotov
Keyword(s):  
Crystal Structures ◽  
Vibrational Spectra ◽  
Main Group ◽  
Group Element ◽  
Main Group Element

scholarly journals A Survey of Supramolecular Aggregation Based on Main Group Element⋯Selenium Secondary Bonding Interactions—A Survey of the Crystallographic Literature

Crystals ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 503 ◽  
Author(s):  
Edward R. T. Tiekink
Keyword(s):  
Crystal Structures ◽  
Three Dimensional ◽  
Main Group ◽  
Group Element ◽  
The Other ◽  
One Dimensional ◽  
Supramolecular Architectures ◽  
Main Group Element ◽  
Supramolecular Aggregation ◽  
Secondary Bonding

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.

scholarly journals A Structural Survey of Poly-Functional Dithiocarbamate Ligands and the Aggregation Patterns They Sustain

Inorganics ◽  
2021 ◽  
Vol 9 (1) ◽  
pp. 7
Author(s):  
See Mun Lee ◽  
Edward R. T. Tiekink
Keyword(s):  
Transition Metal ◽  
Crystal Structures ◽  
Heavy Element ◽  
Three Dimensional ◽  
Main Group ◽  
Group Element ◽  
Main Group Element

An overview is presented of the crystal structures of transition metal, main group element, and lanthanide compounds containing poly-functional dithiocarbamate ligands, namely species containing two or more connected NCS2− residues. In all, there are 40 different ligands of this type that have been characterised crystallographically in their heavy-element compounds with up to six NCS2− residues; all are bridging. In most cases, the resulting aggregates are zero-dimensional, often di-nuclear, but aggregates of up to 36 metal (gold) atoms are noted. There are smaller numbers of one-, two-, and three-dimensional architectures sustained by poly-functional dithiocarbamate ligands in their respective crystals. The survey highlights the opportunities afforded by this generally under-studied class of ligand.

The hexafluorooxotechnetate(2-) anion: the first example of a multiply charged, pentagonal bipyramidal, main-group element AX5YZ species and the vibrational spectra of the TeOF5- anion

1993 ◽  
Vol 32 (19) ◽  
pp. 4089-4093 ◽  
Author(s):  
Karl O. Christe ◽  
David A. Dixon ◽  
Jeremy C. P. Sanders ◽  
Gary J. Schrobilgen ◽  
William W. Wilson
Keyword(s):  
Vibrational Spectra ◽  
Main Group ◽  
Group Element ◽  
Multiply Charged ◽  
Main Group Element

Catalytic Fluorination of Boron Compounds at a Bismuth Redox Platform

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>

Sign in / Sign up

Export Citation Format

Share Document