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6th May 2012 @ 16:40
Spectroscopic Method: MS-ESI
Substituent: Chloro
MS Spectrum of (3E)-3-(4-Chlorobenzylidene)-1,3-dihydro-2H-indol-2-one:

MS Spectrum of (3E)-3-(4-Chlorobenzylidene)-1,3-dihydro-2H-indol-2-one

The mass spectrum of (3E)-3-(4-Chlorobenzylidene)-1,3-dihydro-2H-indol-2-one has been obtained by positive electrospray ionization (ESI). The peak at m/e =256.2 confirms the molecular mass of this compound as the molecular ion gains a proton.

Interpretation of MS Spectrum of (3E)-3-(4-Chlorobenzylidene)-1,3-dihydro-2H-indol-2-one:

Peak PositionDiff. between molecular mass and peakSuspected molecules or ionsInference
258.2258-255=3(M+H)+ H(1)Molecular ion gains a proton, 37Cl isotope present.
259.2259-255=4(M+He)+ He(4)Compound gains helium atom
288.2288-255=33(M+MeOH)+ MeOH(32)Molecular ion gains methanol, 13C isotope present.
290.2290-255=35(M+H2O+NH3)+ H2O(18), NH3(17)Molecular ion gains water and ammonia molecules
299.2299-255=44(M+CO2)+ CO2(44)Compound gains carbon (IV) oxide molecule.
297.2297-255=42(M+Na+H2O)+ Na(23), H2O(18)Molecular ion gains water and sodium atom
273.2273-255=18(M+H2O)+Compound gains water
Attached Files
6th May 2012 @ 16:04
Spectroscopic Method: HPLC
Substituent: Chloro
HPLC Chromatogram of (3E)-3-(4-Chlorobenzylidene)-1,3-dihydro-2H-indol-2-one:

HPLC Chromatogram of (3E)-3-(4-Chlorobenzylidene)-1,3-dihydro-2H-indol-2-one

The two major sharp peaks at 6.396 and 6.788 retention times confirm the presence of two isomers (E and Z)- in this compound, (3E)-3-(4-Chlorobenzylidene)-1,3-dihydro-2H-indol-2-one, while the small peak at 4.212 retention time is due to the presence of impurities. The areas of these two isomers are 23.9136% and 75.5619% which suggest that their percentage yield are 18% and 57% for (E)- and (Z)- isomers respectively since their total percentage yield is 75%.
Attached Files
6th May 2012 @ 15:53
Spectroscopic Method: ATIR-FT-IR
Substituent: Chloro
ATIR-FT-IR Spectrum of (3E)-3-(4-Chlorobenzylidene)-1,3-dihydro-2H-indol-2-one

ATIR-FT-IR Spectrum of (3E)-3-(4-Chlorobenzylidene)-1,3-dihydro-2H-indol-2-one

Interpretation of ATIR-FT-IR Spectrum of (3E)-3-(4-Chlorobenzylidene)-1,3-dihydro-2H-indol-2-one:

ATIRFT-IR Wave Number (cm-1)AssignmentRemarks
3139N-H stretching vibration
(v(N-H) (1o amide)
Symmetrical stretching vibrations of the NH group in the region 3190-3170cm-1
3078Aromatic C-H stretching vibration (v(C-H)C-H aromatic stretching in the region 3100-3000cm-1
3023Aryl-HOften obscured and appears on the region 3010-3040cm-1
2963C-H stretching vibrationsDue to CH3 group in the aromatic ring.
2899C-HSaturated C-H stretching at the region 2840-2930cm-1
1700C=O stretching vibration (v(C=O)Attributed to the carbonyl functional group and shows strong bands at 1650-1900cm-1.
1612Aromatic ringsDue to presence of aromatic ring
737C-HC-H out of plane deformation shows ortho-disubstituted benzene ring on the region 770-735cm-1
668C-ClDue to the presence of C-Cl bond shows band on the region 800-600cm-1
Attached Files
27th March 2012 @ 11:35
Substituent: Methoxy;Methyl;Nitro;Chloro;Bromo
Spectroscopic Method: PXRD
PXRD Diffraction Peaks of Five 4-Substituted Methylidene oxindoles

XPRD Diffraction peaks
Attached Files
27th March 2012 @ 10:54
Spectroscopic Method: DSC
Substituent: Chloro
DSC thermogram of (3E)-3-(4-Chlorobenzylidene)-1,3-dihydro-2H-indol-2-one
DSC Thermogram of (3E)-3-(4-Chlorobenzylidene)-1,3-dihydro-2H-indol-2-one
Attached Files