Synthesis of Cobalt Complex | Coordination Complex - …

We report the synthesis of novel diphenylalanine/cobalt(II,III) oxide (Co3O4) composite nanowires by peptide self-assembly. Peptide nanowires were prepared by treating amorphous diphenylalanine film with aniline vapor at an elevated temperature. They were hybridized with Co3O4 nanocrystals through the reduction of cobalt ions in an aqueous solution using sodium borohydride (NaBH4) without any complex processes such as heat treatment. The formation of peptide/Co3O4 composite nanowires was characterized using multiple tools, such as electron microscopies and elemental analysis, and their potential application as a negative electrode for Li-ion batteries was explored by constructing Swagelok-type cells with hybrid nanowires as a working electrode and examining their charge/discharge behavior. The present study provides a useful approach for the synthesis of functional metal oxide nanomaterials by demonstrating the feasibility of peptide/Co3O4 hybrid nanowires as an energy storage material.

Coordination complexes of cobalt: Inorganic synthesis …

chemical lab report:Synthesis and properties of a cobalt cage complex 1

Synthesis and Properties of a Cobalt Cage Complex - …

The experiment described here studies a series of reactions employed in the synthesis of a number of coordination compounds of cobalt(II) and cobalt(III).

New Applications of Cobalt-Alkyne Complexes in Organic Synthesis

N2 - A model for cobalamin was synthesized using a new monoanionic tetradentate nitrogen donor ligand; 2-(4- tolyl)-1,3-bis(2-isopropylpyridyl)propenediimine (Tol- BDI (2-pp)2H) (1), which utilizes isopropylpyridines as pendant arms on a β-diketiminate (BDI) backbone. During the synthesis of 1, the rearrangement product, Tol-BDI (2-pp)(4-pp)H (2) was observed. Metalation of 1 with zinc iodide and cobalt chloride yielded the corresponding Tol-BDI (2-pp)2ZnI (3) and Tol-BDI (2-pp)2CoCl (4) complexes. The redox properties of 4 in comparison to cobalamin were examined through electrochemical studies. Electrochemical and bulk reduction of complex 4 gave a diamagnetic cobalt(I) complex, Tol-BDI (2-pp)2Co (5). Reactivity of 5 toward C-X bonds was investigated using methyl iodide and 1-iodo-2-(trimethylsilyl)acetylene, yielding Tol-BDI (2-pp)2Co(CH 3)I and Tol-BDI (2-pp)2Co(C 2Si(CH 3) 3)I respectively. Synthesis and characterization details for these complexes, including the crystal structure of 3, are reported.

T1 - Reactions of cobalt carbene complexes with alkynes - η4-vinylketene complex intermediates and a novel synthesis of bovolide
T1 - A cobalt-phosphine complex directed Reformatsky approach to a stereospecific synthesis of the dolastatin 10 unit dolaproine (Dap)

Cobalt Complex | Coordination Complex | Ligand

�The theme of our PRF-funded research continuesto be the development of new synthetic applications of cobalt-alkyne complexesin Diels-Alder reactions.� Specifically,we continued our investigations into the synthesis and reactivity of dienesadjacent to cobalt-complexed alkynes, and we developed cationic Diels-Alderdienes stabilized by cobalt-alkyne complexes.

Our liquid minerals are essential for good health

A model for cobalamin was synthesized using a new monoanionic tetradentate nitrogen donor ligand; 2-(4- tolyl)-1,3-bis(2-isopropylpyridyl)propenediimine (Tol- BDI (2-pp)2H) (1), which utilizes isopropylpyridines as pendant arms on a β-diketiminate (BDI) backbone. During the synthesis of 1, the rearrangement product, Tol-BDI (2-pp)(4-pp)H (2) was observed. Metalation of 1 with zinc iodide and cobalt chloride yielded the corresponding Tol-BDI (2-pp)2ZnI (3) and Tol-BDI (2-pp)2CoCl (4) complexes. The redox properties of 4 in comparison to cobalamin were examined through electrochemical studies. Electrochemical and bulk reduction of complex 4 gave a diamagnetic cobalt(I) complex, Tol-BDI (2-pp)2Co (5). Reactivity of 5 toward C-X bonds was investigated using methyl iodide and 1-iodo-2-(trimethylsilyl)acetylene, yielding Tol-BDI (2-pp)2Co(CH 3)I and Tol-BDI (2-pp)2Co(C 2Si(CH 3) 3)I respectively. Synthesis and characterization details for these complexes, including the crystal structure of 3, are reported.

Synthesis of Cobalt Nanoparticles

AB - A model for cobalamin was synthesized using a new monoanionic tetradentate nitrogen donor ligand; 2-(4- tolyl)-1,3-bis(2-isopropylpyridyl)propenediimine (Tol- BDI (2-pp)2H) (1), which utilizes isopropylpyridines as pendant arms on a β-diketiminate (BDI) backbone. During the synthesis of 1, the rearrangement product, Tol-BDI (2-pp)(4-pp)H (2) was observed. Metalation of 1 with zinc iodide and cobalt chloride yielded the corresponding Tol-BDI (2-pp)2ZnI (3) and Tol-BDI (2-pp)2CoCl (4) complexes. The redox properties of 4 in comparison to cobalamin were examined through electrochemical studies. Electrochemical and bulk reduction of complex 4 gave a diamagnetic cobalt(I) complex, Tol-BDI (2-pp)2Co (5). Reactivity of 5 toward C-X bonds was investigated using methyl iodide and 1-iodo-2-(trimethylsilyl)acetylene, yielding Tol-BDI (2-pp)2Co(CH 3)I and Tol-BDI (2-pp)2Co(C 2Si(CH 3) 3)I respectively. Synthesis and characterization details for these complexes, including the crystal structure of 3, are reported.