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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: MP2=FULL/daug-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 MP2=FULL/daug-cc-pVTZ
 hartrees
Energy at 0K-207.707555
Energy at 298.15K 
HF Energy-206.870500
Nuclear repulsion energy104.067007
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 MP2=FULL/daug-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' 3187 3187 7.47 62.64 0.66 0.79
2 A' 3099 3099 43.24 208.62 0.01 0.02
3 A' 2387 2387 1012.08 1.12 0.02 0.04
4 A' 1536 1536 5.80 4.50 0.41 0.58
5 A' 1495 1495 10.04 25.89 0.24 0.39
6 A' 1472 1472 32.46 16.65 0.21 0.35
7 A' 1174 1174 20.12 0.54 0.74 0.85
8 A' 890 890 24.51 16.70 0.12 0.22
9 A' 636 636 25.09 0.45 0.59 0.74
10 A' 169 169 19.78 2.07 0.66 0.80
11 A" 3166 3166 10.58 59.49 0.75 0.86
12 A" 1542 1542 7.47 6.46 0.75 0.86
13 A" 1153 1153 0.12 0.20 0.75 0.86
14 A" 592 592 15.50 0.47 0.75 0.86
15 A" 73 73 2.00 0.97 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11286.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 11286.0 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 MP2=FULL/daug-cc-pVTZ
ABC
2.79352 0.14438 0.14090

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/daug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.311 1.148 0.000
N2 0.000 0.573 0.000
C3 -0.541 -0.499 0.000
O4 -1.196 -1.478 0.000
H5 1.221 2.228 0.000
H6 1.863 0.845 0.885
H7 1.863 0.845 -0.885

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.43162.47893.63091.08331.08601.0860
N21.43161.20132.37482.05602.08022.0802
C32.47891.20131.17803.24652.89302.8930
O43.63092.37481.17804.42443.94153.9415
H51.08332.05603.24654.42441.76291.7629
H61.08602.08022.89303.94151.76291.7696
H71.08602.08022.89303.94151.76291.7696

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 140.459 N2 C1 H5 108.887
N2 C1 H6 110.684 N2 C1 H7 110.684
N2 C3 O4 173.053 H5 C1 H6 108.710
H5 C1 H7 108.710 H6 C1 H7 109.118
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability