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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: MP2/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at MP2/6-311G**
 hartrees
Energy at 0K-207.487861
Energy at 298.15K 
HF Energy-206.841417
Nuclear repulsion energy103.679794
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 MP2/6-311G**
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' 3197 3038 13.39 74.97 0.67 0.80
2 A' 3084 2931 47.24 153.89 0.01 0.02
3 A' 2387 2268 831.41 0.52 0.16 0.28
4 A' 1525 1449 4.83 8.21 0.66 0.80
5 A' 1487 1412 19.18 8.50 0.70 0.82
6 A' 1470 1397 35.83 29.56 0.29 0.45
7 A' 1171 1113 19.82 2.77 0.54 0.70
8 A' 901 856 26.31 16.62 0.20 0.34
9 A' 642 610 23.86 0.49 0.57 0.73
10 A' 185 176 18.72 1.78 0.69 0.82
11 A" 3167 3009 20.12 65.34 0.75 0.86
12 A" 1530 1454 5.98 14.34 0.75 0.86
13 A" 1148 1091 0.14 2.09 0.75 0.86
14 A" 585 556 19.22 0.49 0.75 0.86
15 A" 69 65 2.16 1.20 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11273.4 cm-1
Scaled (by 0.9502) Zero Point Vibrational Energy (zpe) 10712.0 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 MP2/6-311G**
ABC
2.42089 0.14627 0.14164

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.383 1.039 0.000
N2 0.000 0.616 0.000
C3 -0.572 -0.454 0.000
O4 -1.260 -1.412 0.000
H5 1.411 2.128 0.000
H6 1.902 0.674 0.890
H7 1.902 0.674 -0.890

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.44622.46013.60471.08951.09301.0930
N21.44621.21352.38782.06812.10052.1005
C32.46011.21351.17953.25582.86122.8612
O43.60472.38781.17954.43493.89133.8913
H51.08952.06813.25584.43491.77391.7739
H61.09302.10052.86123.89131.77391.7809
H71.09302.10052.86123.89131.77391.7809

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 135.147 N2 C1 H5 108.473
N2 C1 H6 110.865 N2 C1 H7 110.865
N2 C3 O4 172.494 H5 C1 H6 108.739
H5 C1 H7 108.739 H6 C1 H7 109.106
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability