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Gemini 300 nmr spectrometer

Manufactured by Agilent Technologies
Sourced in Germany

The Gemini 300 NMR spectrometer is a nuclear magnetic resonance (NMR) instrument designed for laboratory use. It is capable of performing NMR spectroscopy, a widely used analytical technique for identifying and characterizing chemical compounds.

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5 protocols using gemini 300 nmr spectrometer

1

Synthesis and Characterization of Hydrazonoyl Halides

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All meeting points were determined on an electro thermal Gallen Kamp melting point apparatus (Laim George, Calgary, AB, Canada) and are uncorrected. IR (cm−1) spectra were recorded on KBr disk on a FTIR-8201 spectrophotometer (Shimadzu, Tokyo, Japan). 1H-NMR and 13C-NMR spectra were measured in deuterated dimethyl sulfoxide (DMSO-d6) using a Varian Gemini 300 NMR spectrometer (Varian, Inc., Karlsruhe, Germany). Mass spectra were recorded on a Shimadzu GCMS-QP1000 EX mass spectrometer (Tokyo, Japan) at 70 eV. Measurements of the elemental analysis were carried out at the Microanalytical Centre of Cairo University, Giza, Egypt. All reactions were followed by TLC (Silica gel, Merck, Kenilworth, NJ, USA). Hydrazonoyl halides were prepared as previously reported [28 (link),29 (link),30 ,31 (link)]
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2

Spectroscopic Characterization of Heterocyclic Compounds

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Measurements of the melting points were carried out on Electrothermal IA 9000 series digital melting point apparatus (Bibby Sci. Lim. Stone, Staffordshire, UK). The IR spectra were recorded in potassium bromide discs on a Pye Unicam SP 3300 and Shimadzu FT-IR 8101 PC infrared spectrophotometer (Shimadzu, Tokyo, Japan). 1H-NMR and 13C-NMR spectra were measured in deuterated dimethyl sulfoxide (DMSO-d6) using a Varian Gemini 300 NMR spectrometer (Varian, Inc., Karlsruhe, Germany). Mass spectra were recorded on a Shimadzu GCMS-QP1000 EX mass spectrometer (Tokyo, Japan) at 70 eV. Measurements of the elemental analysis were carried out at the Microanalytical Centre of Cairo University, Giza, Egypt. All reactions were followed by TLC (Silica gel, Merck, Kenilworth, NJ, USA). The biological evaluation of the products was carried out at the Regional Center for Mycology and Biotechnology at Al-Azhar University, Cairo, Egypt. Bis-hydrazonoyl chloride 1 [24 (link)] and the methyl arylidene dithiocarbamate 2, 6, 8 [25 (link),26 (link),27 (link),28 (link)] were prepared as described in the literature.
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3

Synthesis and Characterization of Novel Compounds

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Melting points were measured
on a Gallenkamp system and were not corrected. IR spectra were collected
in potassium bromide (KBr) using a Pye-Unicam SP300 spectrophotometer. 1H and 13C NMR spectra were collected in deuterated
DMSO-d6 using a Varian Gemini 300 NMR
spectrometer (300 MHz for 1H NMR and 75 MHz for 13C NMR), and the chemical shifts were conveyed to that of the solvent
DMSO-d6. Mass spectra were collected on
GCMS-Q1000-EX Shimadzu and GCMS 5988-A HP spectrometers using 70 eV
ionizing voltage. Elemental analyses were performed at the Microanalytical
Centre of Cairo University, Giza, Egypt. Biological assessments were
performed at the Regional Center for Mycology and Biotechnology at
Al-Azhar University, Cairo, Egypt. Compounds 3ai were synthesized according to a reported procedure.32 (link)
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4

Elemental Composition and Characterization of Nanomaterials

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The elemental composition was determined using the ICPM-8500 inductively coupled plasma mass spectrometer (Shimadzu Co., Japan). The hydrodynamic radii and zeta potential were determined by a Malvern zeta nanosizer (Malvern Instruments Ltd., UK). The MR images were determined by the MRmini small animal MRI (Pharma Biomedical Co., Japan) operating at 1.5 T. The proton nuclear magnetic resonance (1H-NMR) spectroscopy was conducted using a Gemini-300 NMR spectrometer (Varian Inc., USA) at 300 MHz (7.1 T).
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5

Synthesis and Characterization of Novel Compounds

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Melting points were determined on a Gallenkamp apparatus and are uncorrected. IR spectra were recorded in potassium bromide using Pye-Unicam SP300 spectrophotometer. 1H and 13C NMR spectra were recorded in deuterated DMSO-d6 using a Varian Gemini 300 NMR spectrometer (300 MHz for 1H NMR and 75 MHz for 13C NMR) and the chemical shifts were related to that of the solvent DMSO-d6. Mass spectra were recorded on a GCMS-Q1000-EX Shimadzu and GCMS 5988-A HP spectrometers, the ionizing voltage was 70 eV. Elemental analyses of the products were carried out at the Microanalytical Centre of Cairo University, Giza, Egypt. The biological evaluation of the products was carried out at the Department of Microbiology and Immunology, The Faculty of Pharmacy, Ain Shams University, Cairo, Egypt. Compounds 4a-h were prepared as previously reported.21 (link) Compounds 8a-f were prepared as previously reported.22 (link)
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