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: wB97X-D/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at wB97X-D/6-31G(2df,p)
 hartrees
Energy at 0K-207.933750
Energy at 298.15K 
HF Energy-207.933750
Nuclear repulsion energy104.273603
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 wB97X-D/6-31G(2df,p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3151 3151 14.50 76.10 0.68 0.81
2 A' 3049 3049 43.07 143.48 0.01 0.02
3 A' 2430 2430 1030.92 1.34 0.05 0.09
4 A' 1546 1546 4.08 11.73 0.15 0.27
5 A' 1496 1496 8.61 19.32 0.65 0.78
6 A' 1471 1471 34.59 15.46 0.43 0.60
7 A' 1165 1165 16.44 1.86 0.67 0.80
8 A' 907 907 28.39 8.02 0.18 0.31
9 A' 662 662 30.43 0.41 0.72 0.84
10 A' 167 167 16.78 1.56 0.60 0.75
11 A" 3125 3125 18.52 67.05 0.75 0.86
12 A" 1512 1512 5.90 16.97 0.75 0.86
13 A" 1142 1142 0.02 1.82 0.75 0.86
14 A" 619 619 26.68 0.70 0.75 0.86
15 A" 42 42 2.06 0.69 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11241.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 11241.9 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 wB97X-D/6-31G(2df,p)
ABC
2.68678 0.14576 0.14198

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.330 1.113 0.000
N2 0.000 0.578 0.000
C3 -0.557 -0.482 0.000
O4 -1.210 -1.453 0.000
H5 1.275 2.202 0.000
H6 1.882 0.795 0.890
H7 1.882 0.795 -0.890

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.43382.47103.61061.09121.09411.0941
N21.43381.19772.36422.06472.09342.0934
C32.47101.19771.17003.24992.89372.8937
O43.61062.36421.17004.41993.92543.9254
H51.09122.06473.24994.41991.77241.7724
H61.09412.09342.89373.92541.77241.7795
H71.09412.09342.89373.92541.77241.7795

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 139.600 N2 C1 H5 108.961
N2 C1 H6 111.095 N2 C1 H7 111.095
N2 C3 O4 173.786 H5 C1 H6 108.398
H5 C1 H7 108.398 H6 C1 H7 108.815
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.351      
2 N -0.406      
3 C 0.585      
4 O -0.329      
5 H 0.170      
6 H 0.165      
7 H 0.165      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.390 1.461 0.000 2.801
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.953 -0.489 0.000
y -0.489 -24.191 0.000
z 0.000 0.000 -22.093
Traceless
 xyz
x 1.189 -0.489 0.000
y -0.489 -2.168 0.000
z 0.000 0.000 0.979
Polar
3z2-r21.958
x2-y22.239
xy-0.489
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.668 1.761 0.000
y 1.761 5.442 0.000
z 0.000 0.000 3.149


<r2> (average value of r2) Å2
<r2> 82.863
(<r2>)1/2 9.103