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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: MP4=FULL/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at MP4=FULL/6-311+G(3df,2p)
 hartrees
Energy at 0K-207.766202
Energy at 298.15K 
HF Energy-206.864762
Nuclear repulsion energy103.667198
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 MP4=FULL/6-311+G(3df,2p)
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        
2 A' 3061 3061        
3 A' 2320 2320        
4 A' 1517 1517        
5 A' 1472 1472        
6 A' 1435 1435        
7 A' 1162 1162        
8 A' 878 878        
9 A' 629 629        
10 A' 180 180        
11 A" 3136 3136        
12 A" 1524 1524        
13 A" 1141 1141        
14 A" 579 579        
15 A" 74 74        

Unscaled Zero Point Vibrational Energy (zpe) 11133.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 11133.9 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 MP4=FULL/6-311+G(3df,2p)
ABC
2.54094 0.14513 0.14094

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.361 1.078 0.000
N2 0.000 0.602 0.000
C3 -0.562 -0.470 0.000
O4 -1.241 -1.438 0.000
H5 1.350 2.165 0.000
H6 1.892 0.735 0.888
H7 1.892 0.735 -0.888

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.44232.46923.62011.08691.08991.0899
N21.44231.21052.38812.06502.09392.0939
C32.46921.21051.18263.25542.87402.8740
O43.62012.38811.18264.43793.91443.9144
H51.08692.06503.25544.43791.76901.7690
H61.08992.09392.87403.91441.76901.7762
H71.08992.09392.87403.91441.76901.7762

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 136.945 N2 C1 H5 108.647
N2 C1 H6 110.795 N2 C1 H7 110.795
N2 C3 O4 172.635 H5 C1 H6 108.707
H5 C1 H7 108.707 H6 C1 H7 109.138
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability