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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: MP3/Def2TZVPP

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/Def2TZVPP
 hartrees
Energy at 0K-207.624060
Energy at 298.15K 
HF Energy-206.877918
Nuclear repulsion energy104.592134
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/Def2TZVPP
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3193 3193 11.63      
2 A' 3098 3098 39.28      
3 A' 2408 2408 1348.69      
4 A' 1556 1556 2.74      
5 A' 1516 1516 9.85      
6 A' 1489 1489 38.68      
7 A' 1178 1178 24.39      
8 A' 915 915 29.69      
9 A' 677 677 35.16      
10 A' 167 167 21.15      
11 A" 3169 3169 15.65      
12 A" 1537 1537 6.52      
13 A" 1154 1154 0.32      
14 A" 627 627 26.49      
15 A" 41 41 1.82      

Unscaled Zero Point Vibrational Energy (zpe) 11362.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 11362.3 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/Def2TZVPP
ABC
2.51093 0.14815 0.14366

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.372 1.043 0.000
N2 0.000 0.597 0.000
C3 -0.574 -0.452 0.000
O4 -1.245 -1.404 0.000
H5 1.387 2.127 0.000
H6 1.893 0.689 0.886
H7 1.893 0.689 -0.886

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.44242.45403.58231.08411.08701.0870
N21.44241.19582.35642.06502.09182.0918
C32.45401.19581.16443.23992.85872.8587
O43.58232.35641.16444.40373.87393.8739
H51.08412.06503.23994.40371.76341.7634
H61.08702.09182.85873.87391.76341.7715
H71.08702.09182.85873.87391.76341.7715

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 136.722 N2 C1 H5 108.810
N2 C1 H6 110.796 N2 C1 H7 110.796
N2 C3 O4 173.559 H5 C1 H6 108.621
H5 C1 H7 108.621 H6 C1 H7 109.142
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability