All reagents of commercial quality were purchased from Sigma-Aldrich and used without further purification. The purity of the synthesized compounds was determined by elemental analysis and verified to be ≥ 95%, by using a FlashSmart CHNS analyzer (Thermo Fisher) with gas-chromatographic separation. 1H-NMR spectra were recorded at 25 °C on a Bruker Advance 500 or 400 MHz FT spectrometer. The ATR-IR spectra were recorded by means of a Spectrum Two (Perkin Elmer) spectrophotometer by using a diamond crystal plate in the range of 4000-400 cm−1. Mass spectrometry experiments were performed by using an Agilent 6230 Accurate-Mass LC-TOF MS at the U.C. San Diego Molecular Mass Spectrometry Facility.
Flashsmart chns analyzer
Manufactured by Thermo Fisher Scientific
The FlashSmart CHNS analyzer is a laboratory instrument designed to determine the elemental composition (carbon, hydrogen, nitrogen, and sulfur) of organic and inorganic samples. It uses a combustion-based technique to analyze the sample and provide quantitative results for these key elements.
Automatically generated - may contain errors
Lab products found in correlation
2 protocols using flashsmart chns analyzer
1
Comprehensive Chemical Characterization
2
Detailed Characterization of Synthetic Compounds
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All chemicals were purchased
from Merck and Alfa Aesar and were used without further purification.
Anhydrous solvents were dried and stored over molecular sieves (3
Å). NMR experiments were performed on a Brüker Avance
400 MHz instrument or a JEOL 600 MHz ECZ600R instrument at 298 K,
and chemical shifts are reported in parts per million relative to
tetramethylsilane. Infrared (IR) spectra were recorded with a Thermo
Scientific Nicolet 5PC FT-IR-ATR (diamond) spectrometer in the range
of 4000–400 cm–1. ESI-MS analyses were carried
out by using a Waters Acquity Ultra Performance LC instrument with
a Waters Acquity SQ Detector and an ESI interface. The mixtures were
analyzed in negative ionization mode by direct perfusion in the ESI-MS
interface; the injection flow rate was 0.2 mL/min. Elemental analyses
(CHN) were performed on a Thermo Fischer Scientific FlashSmart CHNS
analyzer.
from Merck and Alfa Aesar and were used without further purification.
Anhydrous solvents were dried and stored over molecular sieves (3
Å). NMR experiments were performed on a Brüker Avance
400 MHz instrument or a JEOL 600 MHz ECZ600R instrument at 298 K,
and chemical shifts are reported in parts per million relative to
tetramethylsilane. Infrared (IR) spectra were recorded with a Thermo
Scientific Nicolet 5PC FT-IR-ATR (diamond) spectrometer in the range
of 4000–400 cm–1. ESI-MS analyses were carried
out by using a Waters Acquity Ultra Performance LC instrument with
a Waters Acquity SQ Detector and an ESI interface. The mixtures were
analyzed in negative ionization mode by direct perfusion in the ESI-MS
interface; the injection flow rate was 0.2 mL/min. Elemental analyses
(CHN) were performed on a Thermo Fischer Scientific FlashSmart CHNS
analyzer.
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