ChemInform Abstract: Aromatic Hydrocarbons, Carbocyclic Ligands Spanning Several Oxidation States in Both Main Group and Transition Elements. Recent Advances with Early Transition d Elements

Metallic radii and ionic radii are correlated by two linear relationships one of which comprises the main group elements and the transition elements of groups 3 up to 7. The other one refers to the elements of groups 8 up to 12. The valences (oxidation states) of the ions involved equal the group numbers of the main group elements of groups 1 up to 4, and 3 in the case of P, As, Sb, and Bi. The apparent valences W of the transition metals obey the rule W = 7 − |G−7| with

Download Full-text

Main group & early transition elements

Polyhedron ◽

10.1016/s0277-5387(00)81817-3 ◽

1988 ◽

Vol 7 (21) ◽

pp. 2245

Author(s):

K. Wieghardt

Keyword(s):

Main Group ◽

Transition Elements ◽

Early Transition

Download Full-text

Comprehensive Coordination Chemistry. The Synthesis, Reactions, Properties and Applications of Coordination Compounds (7 Bände). Herausgegeben vonG. Wilkinson, R. Gillard andJ. A. McCleverty. Pergamon Press, Oxford 1987. Insgesamt ca. 7000 S., geb. $ 2450.00. – ISBN 0-08-026232-5. Volume 3: Main Group and Early Transition Elements

Angewandte Chemie ◽

10.1002/ange.19891010642 ◽

1989 ◽

Vol 101 (6) ◽

pp. 808-809

Author(s):

Hubert Schmidbaur

Keyword(s):

Coordination Chemistry ◽

Coordination Compounds ◽

Main Group ◽

Transition Elements ◽

Comprehensive Coordination Chemistry ◽

Synthesis Reactions ◽

Early Transition

Download Full-text

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>

Download Full-text

Recent Advances in Metal Catalyst Design for CO2 Hydroboration to C1 Derivatives

Catalysts ◽

10.3390/catal11010058 ◽

2021 ◽

Vol 11 (1) ◽

pp. 58

Author(s):

Sylwia Kostera ◽

Maurizio Peruzzini ◽

Luca Gonsalvi

Keyword(s):

Transition Metals ◽

Chemical Synthesis ◽

Building Block ◽

Co2 Reduction ◽

Main Group ◽

Catalyst Design ◽

Metal Catalyst ◽

Simple Molecule ◽

Recent Advances ◽

Renewable Feedstock

The use of CO2 as a C1 building block for chemical synthesis is receiving growing attention, due to the potential of this simple molecule as an abundant and cheap renewable feedstock. Among the possible reductants used in the literature to bring about CO2 reduction to C1 derivatives, hydroboranes have found various applications, in the presence of suitable homogenous catalysts. The current minireview article summarizes the main results obtained since 2016 in the synthetic design of main group, first and second row transition metals for use as catalysts for CO2 hydroboration.

Download Full-text