scholarly journals The synthesis of the heterocubane cluster [{CpMn}4(μ3-P)4] as a tetrahedral shaped starting material for the formation of polymeric coordination compounds

2015 ◽  
Vol 51 (70) ◽  
pp. 13474-13477 ◽  
Author(s):  
Sebastian Heinl ◽  
Konrad Kiefer ◽  
Gábor Balázs ◽  
Claudia Wickleder ◽  
Manfred Scheer
Keyword(s):  
Coordination Compounds ◽  
Starting Material ◽  
Phosphorus Containing ◽  
High Yields ◽  
Polymeric Coordination

Thermolysis of [CpMn(η6-cht)] with P4 in 1,3-diisopropylbenzene leads to the formation of the heterocubane [Cp4Mn4P4] (1) in high yields, as a rare example of ‘naked’ phosphorus containing complexes of manganese.

scholarly journals Synthesis of Silsesquioxanes with Substituted Triazole Ring Functionalities and Their Coordination Ability

Molecules ◽  
2021 ◽  
Vol 26 (2) ◽  
pp. 439
Author(s):  
Monika Rzonsowska ◽  
Katarzyna Kozakiewicz ◽  
Katarzyna Mituła ◽  
Julia Duszczak ◽  
Maciej Kubicki ◽  
...  
Keyword(s):  
Ligand Binding ◽  
Molecular Complex ◽  
Coordination Compounds ◽  
Triazole Ring ◽  
Spectroscopic Characterization ◽  
Process Conditions ◽  
Double Decker ◽  
Triazole Ligand ◽  
Coordination Ability ◽  
High Yields

A synthesis of a series of mono-T8 and difunctionalized double-decker silsesquioxanes bearing substituted triazole ring(s) has been reported within this work. The catalytic protocol for their formation is based on the copper(I)-catalyzed azide-alkyne cycloaddition (CuAAC) process. Diverse alkynes were in the scope of our interest—i.e., aryl, hetaryl, alkyl, silyl, or germyl—and the latter was shown to be the first example of terminal germane alkyne which is reactive in the applied process’ conditions. From the pallet of 15 compounds, three of them with pyridine-triazole and thiophenyl-triazole moiety attached to T8 or DDSQ core were verified in terms of their coordinating properties towards selected transition metals, i.e., Pd(II), Pt(II), and Rh(I). The studies resulted in the formation of four SQs based coordination compounds that were obtained in high yields up to 93% and their thorough spectroscopic characterization is presented. To our knowledge, this is the first example of the DDSQ-based molecular complex possessing bidentate pyridine-triazole ligand binding two Pd(II) ions.

scholarly journals Classical and ab initio preparation of reliable structures for polymeric coordination compounds

2007 ◽  
Vol 10 (1-2) ◽  
pp. 82-88 ◽  
Author(s):  
Harald O. Jeschke ◽  
L. Andrea Salguero ◽  
Roser Valentí ◽  
Christian Buchsbaum ◽  
Martin U. Schmidt ◽  
...  
Keyword(s):  
Ab Initio ◽  
Coordination Compounds ◽  
Polymeric Coordination

scholarly journals A practical synthesis of deuterated methylamine and dimethylamine

2020 ◽  
pp. 174751982096963
Author(s):  
Zhaogang Liu ◽  
Xiangyu Ren ◽  
Peng Wang
Keyword(s):  
Clinical Trials ◽  
Starting Material ◽  
New Method ◽  
The Future ◽  
Practical Synthesis ◽  
High Yields

In recent years, several deuterated drugs have entered clinical trials and have been approved for use. Deuterated methylamine and dimethylamine as important intermediates play significant roles in the preparation of deuterated drugs. In this study, we have developed a new method to prepare deuterated methylamine and dimethylamine. This method employs Boc-benzylamine as the starting material and TsOCD3 as the deuterated methylation reagent. Our method gives relatively high yields and involves simple purifications, which provide a favourable supplement for the development and synthesis of deuterated drugs in the future.

scholarly journals Free Radical Chemistry of White Phosphorus: γ-Irradiation of P4 in Bromoform

1968 ◽  
Vol 23 (7) ◽  
pp. 916-921 ◽  
Author(s):  
P. Airey ◽  
H. Drawe ◽  
A. Henglein
Keyword(s):  
Free Radicals ◽  
White Phosphorus ◽  
High Yield ◽  
Red Phosphorus ◽  
Γ Irradiation ◽  
Γ Radiation ◽  
Chain Reactions ◽  
Phosphorus Containing ◽  
High Yields ◽  
Free Radical Chemistry

CHBr2PBr2 and (CHBr2)2PBr are formed in high yields and in preparatively useful amounts when solutions of white phosphorus in bromoform are exposed to γ-radiation. In the first stages of irradiation, a red phosphorus containing many groups from the solvent is the only reaction product. About 1000 molecules of P4 are consumed per 100 eV of energy absorbed. In the later stages of irradiation, free radicals from the solvent attack this red phosphorus and lead to the formation of bromophosphines in high yield. Chain reactions are formulated for the formation of both the red phosphorus and the bromophosphines.

Contribution to the Chemistry of Boron, 241. Improved Synthesis of 2,4,6-Trichloroborazine

1997 ◽  
Vol 52 (11) ◽  
pp. 1345-1348 ◽  
Author(s):  
Heinrich Nöth ◽  
Hermann Sachdev
Keyword(s):  
Boron Nitride ◽  
Starting Material ◽  
High Yields

Abstract 2,4,6-Trichloroborazine 2,4,6-Trichloroborazine is an important starting material for the preparation of many borazine derivatives, particularly for the parent borazine (HB=NH)3. Both are precursors for the CVD of boron nitride. Improved conditions for the synthesis of (CIB=NH)3 to give high yields are reported.

Asymmetrie Ethynes. Syntheses of Ethynylferrocene Paradigms

1996 ◽  
Vol 51 (12) ◽  
pp. 1683-1690 ◽  
Author(s):  
Johann Polin ◽  
Herwig Schottenberger ◽  
Karl Eberhard Schwarzhans
Keyword(s):  
Coordination Compounds ◽  
Nonlinear Optical ◽  
Materials Science ◽  
Synthetic Methods ◽  
Nucleophilic Additions ◽  
High Yields ◽  
Intended Use

Synthetic methods to bifunctional ethynes have been examined. Direct ethynylation, the Stephens-Castro reaction, the Pd-catalysed Hagihara coupling, transmetalation reactions and nucleophilic additions have been evaluated in the preparation of substituted ferrocenylethynes with intended use of these materials in electrochemical and nonlinear optical investigations. Asymmetric ferrocenylethynes are promising candidates for applications in contemporary materials science. Synthetically, 1,4-bis(ferrocenylethynylene)benzene (1), 1,3,5-tris(ferrocenylethynylene) benzene (2), and 9 ,10-bis(ferrocenylethynylene)anthracene (3) are obtained in high yields, whereas 4-ferrocenylethynylene-2,3,5,6-tetrafluorostyrene (4) and potassium (ferrocenylethynylene) triphenyl borate (5) are accessible in only moderate yields. Further extension of this chemistry to additional heteronuclear bimetallic coordination compounds has been attempted, but without success due to severe difficulties in both preparation and characterization of these materials.

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