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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: HF/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at HF/aug-cc-pVDZ
 hartrees
Energy at 0K-206.820823
Energy at 298.15K 
HF Energy-206.820823
Nuclear repulsion energy105.011488
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 HF/aug-cc-pVDZ
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' 3297 3002 21.16 65.16 0.63 0.77
2 A' 3193 2908 50.47 179.49 0.01 0.02
3 A' 2464 2243 1729.82 3.20 0.03 0.07
4 A' 1619 1474 2.08 5.83 0.09 0.16
5 A' 1582 1441 12.46 9.93 0.47 0.64
6 A' 1553 1414 54.12 6.12 0.15 0.27
7 A' 1237 1126 30.57 0.75 0.68 0.81
8 A' 939 855 46.21 11.75 0.12 0.21
9 A' 740 674 50.85 0.63 0.32 0.49
10 A' 164 149 23.27 1.24 0.70 0.82
11 A" 3266 2974 27.25 59.41 0.75 0.86
12 A" 1606 1462 6.76 6.02 0.75 0.86
13 A" 1214 1106 0.84 0.32 0.75 0.86
14 A" 698 635 42.08 0.76 0.75 0.86
15 A" 24 22 1.93 0.61 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11796.9 cm-1
Scaled (by 0.9106) Zero Point Vibrational Energy (zpe) 10742.3 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 HF/aug-cc-pVDZ
ABC
2.45124 0.14980 0.14504

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.385 1.017 0.000
N2 0.000 0.596 0.000
C3 -0.589 -0.436 0.000
O4 -1.248 -1.383 0.000
H5 1.412 2.101 0.000
H6 1.897 0.652 0.888
H7 1.897 0.652 -0.888

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.44722.45063.56221.08461.08831.0883
N21.44721.18822.33962.06392.09512.0951
C32.45061.18821.15373.23132.85472.8547
O43.56222.33961.15374.38353.84923.8492
H51.08462.06393.23134.38351.76761.7676
H61.08832.09512.85473.84921.76761.7764
H71.08832.09512.85473.84921.76761.7764

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 136.601 N2 C1 H5 108.360
N2 C1 H6 110.642 N2 C1 H7 110.642
N2 C3 O4 174.859 H5 C1 H6 108.874
H5 C1 H7 108.874 H6 C1 H7 109.404
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.837      
2 N -0.338      
3 C 0.203      
4 O -0.427      
5 H -0.161      
6 H -0.057      
7 H -0.057      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.722 1.413 0.000 3.067
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.867 -0.889 0.000
y -0.889 -25.635 0.000
z 0.000 0.000 -22.773
Traceless
 xyz
x 1.337 -0.889 0.000
y -0.889 -2.816 0.000
z 0.000 0.000 1.479
Polar
3z2-r22.958
x2-y22.768
xy-0.889
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.222 1.650 0.000
y 1.650 5.652 0.000
z 0.000 0.000 3.643


<r2> (average value of r2) Å2
<r2> 82.043
(<r2>)1/2 9.058