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