1949
DOI: 10.1021/ac60028a006
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Microscopic Identification of Organic Compounds

Abstract: The general microscopic identification of crystalline organic compounds requires the use of the petrographicai microscope. Properties such as optic axial angle, refractive indexes, dispersion, and optical character normally are most desirable in positive identifications.

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Cited by 36 publications
(12 citation statements)
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“…The two forms of furfural 2,4-dinitrophenylhydrazone were distinguished from each other by means of the spectrophotometer, the polarizing microscope, and the x-ray diffraction spectrometer. The literature offers some fine examples of the use of absorption spectra (7,20,34,38), powder-diffraction patterns (2,14,20,23,26,30), and optical-crvstallographic data (11,32) for the identification of 2,4-dinitrophenylhydrazones. Nothing concerning the polarographic determination of these compounds has appeared, however.…”
mentioning
confidence: 99%
“…The two forms of furfural 2,4-dinitrophenylhydrazone were distinguished from each other by means of the spectrophotometer, the polarizing microscope, and the x-ray diffraction spectrometer. The literature offers some fine examples of the use of absorption spectra (7,20,34,38), powder-diffraction patterns (2,14,20,23,26,30), and optical-crvstallographic data (11,32) for the identification of 2,4-dinitrophenylhydrazones. Nothing concerning the polarographic determination of these compounds has appeared, however.…”
mentioning
confidence: 99%
“…Berdasarkan data spektrum 1 H-NMR, gugus alkena yang terkonjugasi dengan gugus karboksilat ditunjukkan dengan adanya puncak doublet pada pergeseran kimia 7,97 ppm dengan tetapan kopling 16 Hz dan pada pergeseran kimia 6,49 ppm dengan tetapan kopling 16 Hz yang masingmasing menunjukkan 1 proton. Hal tsb menunjukkan bahwa proton pada Cα dan Cβ alkena berada pada konformasi trans [19]. Adanya dua metil pada senyawa hasil sintesis, terkonfirmasi pada geseran kimia 3.79 ppm dan 3.74 ppm pada spektra 1 HNMR, yang diperkuat pada spektra 13 CNMR geseran kimia 51.2 dan 55.5 ppm.…”
Section: Hasil Dan Diskusiunclassified
“…Selain pada rentang tersebut, serapan keton juga dapat berada pada rentang 700 cm -1 -1780 cm -1 (Harrison et al, 2011). C2H5COCH3 550 -6500 (Sharpe et al, 2004) 2 Isoprena (2-metil-1,3butadin) CH2=CHC(CH3)=CH2 600 -6500 (Sharpe et al, 2004) 3 Etilbenzena C6H5C2H5 600 -6500 (Sharpe et al, 2004) 4 Aseton (Propanon) CH3COCH3 700 -1780 (Harrison et al, 2011) 5 Benzena C6H6 600 -6500 (Rinsland et al, 2008) 36990 -41785 (Fally et al, 2009) 6 Benzaldehida C6H5CHO 600 -6500 (Sharpe et al, 2004) 7 Dimetil sulfida (CH3)2S 600 -6500 (Sharpe et al, 2004) 8 Propana CH3CH2CH3 600 -6500 (Sharpe et al, 2004) 2540 -3300 (Harrison and Bernath, 2010) Rentang serapan pada tabel 2 dapat dibedakan menjadi 2 golongan, yaitu rentang energi pada serapan inframerah (100 cm -1 sampai 10.000 cm -1 ) (Silverstein et al, 1949)…”
Section: Pendahuluanunclassified