Convenient synthesis of nanocrystalline powders of phase-pure manganese nitride η-Mn3N2

Abstract

Manganese bis(trimethylsilyl)amide Mn[N(Si(CH 3 ) 3 ) 2 ] 2 was used as a convenient material precursor to prepare pure manganese nitride nanopowders with reaction-controlled average crystallite sizes. The precursor was first reacted with liquid ammonia under reflux conditions and the resulting by-product was pyrolyzed under an ammonia flow at temperatures in the range 150-900°C. The powder products were characterized mainly by powder X-ray diffraction (XRD) diffraction, SEM/EDX examinations, and FT-IR and micro-Raman spectroscopies. In all cases, a pure phase of nanocrystalline g-Mn 3 N 2 was detected by XRD as the exclusive manganese nitride product. The compound's nanopowders were extremely reactive toward air. Upon oxidation, they formed either MnO for a relatively better crystallized nitride from higher synthesis temperatures or Mn 3 O 4 after self-ignition of a poorly crystalline nitride from a lower synthesis temperature.

New Nitride Nanoceramics from Synthesis-Mixed Nanopowders in the Composite System Gallium Nitride GaN–Titanium Nitride TiN

“…The general transamination/deamination chemistry was precedented in the 1980s [ 29 , 30 ] and, specifically, it was detailed by us for the dimethylamide derivatives of gallium [ 19 , 20 ], manganese-doped gallium [ 28 ], aluminum [ 20 ], mixtures of gallium and aluminum [ 20 , 31 ], and mixtures of aluminum and titanium [ 32 ]. It was also demonstrated to work for some trimethylsilylamides as reported for the preparation of manganese nitride η -Mn 3 N 2 from Mn-bis(trimethylsilyl)amide [ 35 ].…”

A Molecular Approach to Manganese Nitride Acting as a High Performance Electrocatalyst in the Oxygen Evolution Reaction

“…Attaining manganese nitrides from molecular precursors is highly compelling owing to the rational access and shape selectivity determined on the molecular level. Up to now only a few procedures forming manganese nitrides have been reported using a molecular approach, but they gave merely air‐sensitive materials …”

Manganese–Fluorouracil Metallodrug Nanotheranostic for MRI-Correlated Drug Release and Enhanced Chemoradiotherapy

“…UV-Vis spectra (Supporting Information Figure S2) and 19 F nuclear magnetic resonance ( 19 F-NMR) spectra (Supporting Information Figure S3) showed Mn-FU with typical spectral peaks of FU. In Fourier transform infrared (FTIR) spectroscopy, the absorption band at 3142 cm −1 was attributed to the N-H stretching vibration in FU, which disappeared in Mn-FU (Figure 1f), demonstrating the coordination between Mn and N. 33 In addition, the absorption band at 1662 cm −1 was attributed to the C=O stretching vibration in FU, which changed to 1670 cm −1 and 1540 cm −1 in Mn-FU, demonstrating the coordination between Mn and O. As demonstrated by X-ray photoelectron spectroscopy (XPS), the slightly shifted peaks of Mn 2p (from 641.…”