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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: CCD/aug-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 CCD/aug-cc-pVTZ
 hartrees
Energy at 0K-207.631755
Energy at 298.15K 
HF Energy-206.871579
Nuclear repulsion energy104.333357
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/aug-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' 3171 3034 10.55      
2 A' 3074 2941 40.28      
3 A' 2385 2282 1339.12      
4 A' 1542 1476 1.69      
5 A' 1513 1447 11.79      
6 A' 1484 1420 37.80      
7 A' 1174 1123 25.18      
8 A' 902 863 28.83      
9 A' 669 641 34.42      
10 A' 162 155 21.81      
11 A" 3147 3012 14.10      
12 A" 1537 1471 6.83      
13 A" 1152 1102 0.40      
14 A" 622 595 23.57      
15 A" 41 40 1.79      

Unscaled Zero Point Vibrational Energy (zpe) 11286.5 cm-1
Scaled (by 0.957) Zero Point Vibrational Energy (zpe) 10801.1 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/aug-cc-pVTZ
ABC
2.56177 0.14686 0.14264

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.362 1.068 0.000
N2 0.000 0.591 0.000
C3 -0.570 -0.462 0.000
O4 -1.235 -1.423 0.000
H5 1.350 2.154 0.000
H6 1.890 0.724 0.888
H7 1.890 0.724 -0.888

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.44322.46423.59891.08611.08901.0890
N21.44321.19702.36262.06552.09242.0924
C32.46421.19701.16923.24482.87122.8712
O43.59892.36261.16924.41363.89413.8941
H51.08612.06553.24484.41361.76831.7683
H61.08902.09242.87123.89411.76831.7760
H71.08902.09242.87123.89411.76831.7760

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 137.731 N2 C1 H5 108.674
N2 C1 H6 110.664 N2 C1 H7 110.664
N2 C3 O4 173.711 H5 C1 H6 108.772
H5 C1 H7 108.772 H6 C1 H7 109.247
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability