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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: CCD/daug-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 CCD/daug-cc-pVDZ
 hartrees
Energy at 0K-207.466322
Energy at 298.15K 
HF Energy-206.818987
Nuclear repulsion energy103.456751
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 CCD/daug-cc-pVDZ
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' 3161 3161 13.46      
2 A' 3060 3060 46.04      
3 A' 2344 2344 1288.78      
4 A' 1512 1512 2.50      
5 A' 1481 1481 10.37      
6 A' 1455 1455 42.14      
7 A' 1156 1156 27.11      
8 A' 903 903 27.79      
9 A' 666 666 31.63      
10 A' 175 175 21.01      
11 A" 3137 3137 18.24      
12 A" 1507 1507 5.65      
13 A" 1134 1134 0.55      
14 A" 607 607 21.60      
15 A" 60 60 1.64      

Unscaled Zero Point Vibrational Energy (zpe) 11178.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 11178.5 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 CCD/daug-cc-pVDZ
ABC
2.32493 0.14638 0.14147

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/daug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.404 1.013 0.000
N2 0.000 0.623 0.000
C3 -0.586 -0.440 0.000
O4 -1.274 -1.397 0.000
H5 1.457 2.110 0.000
H6 1.914 0.633 0.898
H7 1.914 0.633 -0.898

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.45682.46403.60261.09801.10111.1011
N21.45681.21402.38822.08202.11442.1144
C32.46401.21401.17853.26782.86522.8652
O43.60262.38821.17854.44513.88473.8847
H51.09802.08203.26784.44511.78811.7881
H61.10112.11442.86523.88471.78811.7967
H71.10112.11442.86523.88471.78811.7967

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 134.409 N2 C1 H5 108.342
N2 C1 H6 110.742 N2 C1 H7 110.742
N2 C3 O4 173.166 H5 C1 H6 108.806
H5 C1 H7 108.806 H6 C1 H7 109.353
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability