Complexes of 1,2,4-Triazoles, VII [1]. Preparation and Vibrational Spectra of 4,4’-Bi-1,2,4-triazole and Some of its Complexes with Transition Metal(II) Thiocyanates

1979 ◽  
Vol 34 (11) ◽  
pp. 1500-1506 ◽  
Author(s):  
Jaap G. Haasnoot ◽  
Willem L. Groeneveld
Keyword(s):  
Transition Metal ◽  
Vibrational Spectra ◽  
Nitrogen Donor

Abstract The preparation and characterization of 4,4′-bi-1,2,4-triazole is described. The compound is a strong, polydentate, polynucleating nitrogen donor. Two complexes, M(btr)2(NCS)2H2O M=Co, Ni, are described. The vibrational spectra of ligand and complexes are compared. A structure for the complexes is proposed.

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>

Correlative experimental and theoretical characterization of transition metal doped hydroxyapatite nanoparticles fabricated by hydrothermal method

2021 ◽  
Vol 173 ◽  
pp. 110911
Author(s):  
Anastasia V. Sadetskaya ◽  
Natalia P. Bobrysheva ◽  
Mikhail G. Osmolowsky ◽  
Olga M. Osmolovskaya ◽  
Mikhail A. Voznesenskiy
Keyword(s):  
Transition Metal ◽  
Hydrothermal Method ◽  
Hydroxyapatite Nanoparticles ◽  
Theoretical Characterization ◽  
Metal Doped

Defect engineering and characterization of active sites for efficient electrocatalysis

Nanoscale ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 3327-3345
Author(s):  
Xuecheng Yan ◽  
Linzhou Zhuang ◽  
Zhonghua Zhu ◽  
Xiangdong Yao
Keyword(s):  
Transition Metal ◽  
Active Sites ◽  
Defect Engineering ◽  
Metal Free

This review highlights recent advancements in defect engineering and characterization of both metal-free carbons and transition metal-based electrocatalysts.

Synthesis and Characterization of a Rare Transition-Metal Oxothiostannate and Investigation of Its Photocatalytic Properties

2019 ◽  
Vol 58 (4) ◽  
pp. 2354-2362 ◽  
Author(s):  
Assma Benkada ◽  
Helge Reinsch ◽  
Michael Poschmann ◽  
Jan Krahmer ◽  
Nicole Pienack ◽  
...  
Keyword(s):  
Transition Metal ◽  
Photocatalytic Properties ◽  
Synthesis And Characterization
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