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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: MP3=FULL/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at MP3=FULL/cc-pVDZ
 hartrees
Energy at 0K-207.428612
Energy at 298.15K 
HF Energy-206.806472
Nuclear repulsion energy103.904739
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at MP3=FULL/cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3205 3013 15.86      
2 A' 3096 2912 46.38      
3 A' 2412 2268 1180.65      
4 A' 1545 1453 6.69      
5 A' 1499 1409 7.05      
6 A' 1474 1386 47.89      
7 A' 1166 1096 24.00      
8 A' 934 879 30.28      
9 A' 673 633 31.29      
10 A' 176 166 19.32      
11 A" 3176 2987 22.29      
12 A" 1517 1427 5.10      
13 A" 1136 1069 0.27      
14 A" 609 573 26.77      
15 A" 38 36 1.78      

Unscaled Zero Point Vibrational Energy (zpe) 11328.8 cm-1
Scaled (by 0.9403) Zero Point Vibrational Energy (zpe) 10652.5 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at MP3=FULL/cc-pVDZ
ABC
2.26889 0.14855 0.14326

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.406 0.983 0.000
N2 0.000 0.631 0.000
C3 -0.590 -0.428 0.000
O4 -1.278 -1.376 0.000
H5 1.496 2.077 0.000
H6 1.915 0.593 0.896
H7 1.915 0.593 -0.896

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.44912.44373.57271.09831.10181.1018
N21.44911.21202.37892.08062.11452.1145
C32.44371.21201.17123.25962.84932.8493
O43.57272.37891.17124.42893.85663.8566
H51.09832.08063.25964.42891.78351.7835
H61.10182.11452.84933.85661.78351.7927
H71.10182.11452.84933.85661.78351.7927

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 133.157 N2 C1 H5 108.738
N2 C1 H6 111.243 N2 C1 H7 111.243
N2 C3 O4 173.121 H5 C1 H6 108.317
H5 C1 H7 108.317 H6 C1 H7 108.893
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability