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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: CID/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 CID/Def2TZVPP
 hartrees
Energy at 0K-207.524646
Energy at 298.15K 
HF Energy-206.878832
Nuclear repulsion energy105.079759
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 CID/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' 3259 3259 12.97      
2 A' 3163 3163 40.70      
3 A' 2461 2461 1437.47      
4 A' 1595 1595 2.21      
5 A' 1559 1559 10.95      
6 A' 1531 1531 42.30      
7 A' 1212 1212 24.76      
8 A' 927 927 34.26      
9 A' 698 698 41.69      
10 A' 157 157 22.09      
11 A" 3235 3235 16.93      
12 A" 1579 1579 6.71      
13 A" 1190 1190 0.46      
14 A" 658 658 32.83      
15 A" 34 34 2.12      

Unscaled Zero Point Vibrational Energy (zpe) 11628.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 11628.7 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 CID/Def2TZVPP
ABC
2.69262 0.14805 0.14409

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.337 1.091 0.000
N2 0.000 0.574 0.000
C3 -0.563 -0.469 0.000
O4 -1.210 -1.431 0.000
H5 1.294 2.169 0.000
H6 1.873 0.766 0.881
H7 1.873 0.766 -0.881

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.43342.45913.58461.07851.08141.0814
N21.43341.18582.34192.05392.07882.0788
C32.45911.18581.15883.22662.87042.8704
O43.58462.34191.15884.38533.88713.8871
H51.07852.05393.22664.38531.75471.7547
H61.08142.07882.87043.88711.75471.7622
H71.08142.07882.87043.88711.75471.7622

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 139.524 N2 C1 H5 108.881
N2 C1 H6 110.725 N2 C1 H7 110.725
N2 C3 O4 174.452 H5 C1 H6 108.666
H5 C1 H7 108.666 H6 C1 H7 109.128
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability