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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: MP2/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 MP2/daug-cc-pVDZ
 hartrees
Energy at 0K-207.459046
Energy at 298.15K 
HF Energy-206.816316
Nuclear repulsion energy102.912083
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/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' 3190 3190 10.00 62.55 0.68 0.81
2 A' 3077 3077 48.97 205.66 0.01 0.02
3 A' 2326 2326 943.50 1.05 0.42 0.60
4 A' 1498 1498 5.77 3.97 0.46 0.63
5 A' 1456 1456 15.21 10.32 0.34 0.51
6 A' 1434 1434 34.51 25.84 0.19 0.32
7 A' 1152 1152 22.33 0.74 0.72 0.84
8 A' 884 884 24.22 20.39 0.12 0.22
9 A' 632 632 23.54 0.64 0.49 0.65
10 A' 187 187 19.21 2.31 0.63 0.77
11 A" 3166 3166 14.59 60.30 0.75 0.86
12 A" 1504 1504 6.18 6.72 0.75 0.86
13 A" 1131 1131 0.20 0.32 0.75 0.86
14 A" 572 572 13.96 0.42 0.75 0.86
15 A" 75 75 1.71 0.94 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11141.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 11141.3 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/daug-cc-pVDZ
ABC
2.39297 0.14412 0.13959

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.390 1.050 0.000
N2 0.000 0.622 0.000
C3 -0.571 -0.460 0.000
O4 -1.267 -1.426 0.000
H5 1.411 2.146 0.000
H6 1.909 0.684 0.897
H7 1.909 0.684 -0.897

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.45412.47523.63211.09611.09921.0992
N21.45411.22392.40882.07672.11022.1102
C32.47521.22391.19073.27442.87512.8751
O43.63212.40881.19074.46483.91773.9177
H51.09612.07673.27444.46481.78601.7860
H61.09922.11022.87513.91771.78601.7942
H71.09922.11022.87513.91771.78601.7942

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 134.937 N2 C1 H5 108.222
N2 C1 H6 110.707 N2 C1 H7 110.707
N2 C3 O4 172.049 H5 C1 H6 108.881
H5 C1 H7 108.881 H6 C1 H7 109.396
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability