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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: HSEh1PBE/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at HSEh1PBE/6-31G*
 hartrees
Energy at 0K-207.769947
Energy at 298.15K 
HF Energy-207.769947
Nuclear repulsion energy103.964596
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 HSEh1PBE/6-31G*
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' 3169 3014 15.67 84.89 0.66 0.80
2 A' 3069 2918 46.40 156.79 0.01 0.03
3 A' 2445 2325 967.05 2.12 0.07 0.14
4 A' 1552 1476 2.27 11.19 0.17 0.29
5 A' 1515 1441 9.60 26.58 0.61 0.75
6 A' 1485 1413 35.33 26.67 0.46 0.63
7 A' 1171 1114 15.39 2.88 0.65 0.79
8 A' 906 862 30.57 6.92 0.21 0.35
9 A' 626 596 29.26 0.49 0.68 0.81
10 A' 165 157 16.88 1.90 0.65 0.79
11 A" 3140 2986 20.67 75.84 0.75 0.86
12 A" 1533 1458 6.07 22.24 0.75 0.86
13 A" 1142 1086 0.01 2.93 0.75 0.86
14 A" 582 554 27.23 0.71 0.75 0.86
15 A" 47 44 2.89 1.09 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11273.3 cm-1
Scaled (by 0.951) Zero Point Vibrational Energy (zpe) 10720.9 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 HSEh1PBE/6-31G*
ABC
2.82789 0.14390 0.14058

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.299 1.163 0.000
N2 0.000 0.568 0.000
C3 -0.538 -0.506 0.000
O4 -1.187 -1.489 0.000
H5 1.194 2.250 0.000
H6 1.867 0.873 0.890
H7 1.867 0.873 -0.890

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.42862.48153.63441.09221.09561.0956
N21.42861.20092.37432.06302.09112.0911
C32.48151.20091.17773.25502.91172.9117
O43.63442.37431.17774.43243.96193.9619
H51.09222.06303.25504.43241.77291.7729
H61.09562.09112.91173.96191.77291.7808
H71.09562.09112.91173.96191.77291.7808

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 141.221 N2 C1 H5 109.118
N2 C1 H6 111.191 N2 C1 H7 111.191
N2 C3 O4 173.151 H5 C1 H6 108.261
H5 C1 H7 108.261 H6 C1 H7 108.727
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.379      
2 N -0.444      
3 C 0.638      
4 O -0.419      
5 H 0.206      
6 H 0.199      
7 H 0.199      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.480 1.606 0.000 2.955
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.037 -0.430 0.000
y -0.430 -24.354 0.000
z 0.000 0.000 -22.228
Traceless
 xyz
x 1.254 -0.430 0.000
y -0.430 -2.222 0.000
z 0.000 0.000 0.968
Polar
3z2-r21.935
x2-y22.317
xy-0.430
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.273 1.862 0.000
y 1.862 5.395 0.000
z 0.000 0.000 2.771


<r2> (average value of r2) Å2
<r2> 83.617
(<r2>)1/2 9.144