return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: TPSSh/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 TPSSh/6-311+G(3df,2p)
 hartrees
Energy at 0K-208.072607
Energy at 298.15K 
HF Energy-208.072607
Nuclear repulsion energy103.996285
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 TPSSh/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' 3119 3119 15.47 72.47 0.63 0.77
2 A' 3028 3028 48.15 202.19 0.02 0.03
3 A' 2351 2351 1035.61 1.42 0.08 0.14
4 A' 1515 1515 1.85 4.13 0.34 0.51
5 A' 1484 1484 15.03 11.42 0.38 0.55
6 A' 1451 1451 32.33 22.02 0.20 0.33
7 A' 1157 1157 20.02 0.80 0.75 0.86
8 A' 870 870 29.40 9.41 0.11 0.19
9 A' 641 641 26.28 0.60 0.49 0.66
10 A' 175 175 16.66 2.24 0.64 0.78
11 A" 3089 3089 21.14 72.54 0.75 0.86
12 A" 1518 1518 6.16 7.66 0.75 0.86
13 A" 1131 1131 0.16 0.40 0.75 0.86
14 A" 590 590 18.88 0.47 0.75 0.86
15 A" 45 45 1.86 0.72 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11081.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 11081.7 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 TPSSh/6-311+G(3df,2p)
ABC
2.63611 0.14525 0.14135

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.348 1.100 0.000
N2 0.000 0.585 0.000
C3 -0.559 -0.478 0.000
O4 -1.227 -1.444 0.000
H5 1.304 2.187 0.000
H6 1.887 0.770 0.890
H7 1.887 0.770 -0.890

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.44292.47503.61941.08831.09171.0917
N21.44291.20102.37132.06552.09502.0950
C32.47501.20101.17453.25152.88712.8871
O43.61942.37131.17454.42603.92353.9235
H51.08832.06553.25154.42601.77201.7720
H61.09172.09502.88713.92351.77201.7801
H71.09172.09502.88713.92351.77201.7801

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 138.634 N2 C1 H5 108.570
N2 C1 H6 110.738 N2 C1 H7 110.738
N2 C3 O4 173.103 H5 C1 H6 108.757
H5 C1 H7 108.757 H6 C1 H7 109.233
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.192      
2 N -1.081      
3 C 1.300      
4 O -0.691      
5 H 0.088      
6 H 0.096      
7 H 0.096      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.513 1.536 0.000 2.945
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.627 1.938 0.000
y 1.938 6.293 0.000
z 0.000 0.000 3.846


<r2> (average value of r2) Å2
<r2> 83.500
(<r2>)1/2 9.138