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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: CID/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-207.517738
Energy at 298.15K 
HF Energy-206.870019
Nuclear repulsion energy105.049973
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/cc-pVTZ
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' 3256 3017 13.41      
2 A' 3159 2927 40.89      
3 A' 2468 2286 1405.22      
4 A' 1596 1478 2.70      
5 A' 1559 1444 10.48      
6 A' 1526 1414 42.96      
7 A' 1210 1121 24.12      
8 A' 927 859 33.76      
9 A' 694 643 41.60      
10 A' 155 144 21.90      
11 A" 3232 2994 17.80      
12 A" 1579 1463 6.44      
13 A" 1187 1100 0.41      
14 A" 654 606 32.89      
15 A" 20 19 2.17      

Unscaled Zero Point Vibrational Energy (zpe) 11610.3 cm-1
Scaled (by 0.9265) Zero Point Vibrational Energy (zpe) 10757.0 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/cc-pVTZ
ABC
2.69964 0.14791 0.14398

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.336 1.094 0.000
N2 0.000 0.573 0.000
C3 -0.562 -0.471 0.000
O4 -1.210 -1.433 0.000
H5 1.291 2.171 0.000
H6 1.873 0.770 0.881
H7 1.873 0.770 -0.881

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.43332.45963.58621.07861.08161.0816
N21.43331.18612.34272.05402.07952.0795
C32.45961.18611.15953.22712.87222.8722
O43.58622.34271.15954.38643.89043.8904
H51.07862.05403.22714.38641.75451.7545
H61.08162.07952.87223.89041.75451.7619
H71.08162.07952.87223.89041.75451.7619

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 139.582 N2 C1 H5 108.888
N2 C1 H6 110.787 N2 C1 H7 110.787
N2 C3 O4 174.371 H5 C1 H6 108.624
H5 C1 H7 108.624 H6 C1 H7 109.076
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability