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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: B3PW91/daug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at B3PW91/daug-cc-pVTZ
 hartrees
Energy at 0K-207.988750
Energy at 298.15K 
HF Energy-207.988750
Nuclear repulsion energy104.288257
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 B3PW91/daug-cc-pVTZ
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' 3126 3126 12.04 72.13 0.64 0.78
2 A' 3035 3035 45.66 224.63 0.01 0.03
3 A' 2388 2388 1113.37 2.26 0.02 0.05
4 A' 1522 1522 1.28 16.66 0.13 0.23
5 A' 1481 1481 12.30 13.66 0.46 0.63
6 A' 1451 1451 29.53 13.09 0.23 0.38
7 A' 1151 1151 17.42 0.57 0.75 0.86
8 A' 886 886 27.14 8.08 0.11 0.19
9 A' 643 643 28.46 0.62 0.46 0.63
10 A' 168 168 17.36 2.23 0.61 0.76
11 A" 3099 3099 16.32 71.35 0.75 0.86
12 A" 1499 1499 7.49 7.21 0.75 0.86
13 A" 1127 1127 0.02 0.22 0.75 0.86
14 A" 599 599 20.50 0.60 0.75 0.86
15 A" 45 45 1.90 0.71 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11110.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 11110.1 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 B3PW91/daug-cc-pVTZ
ABC
2.78949 0.14504 0.14155

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/daug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.312 1.142 0.000
N2 0.000 0.568 0.000
C3 -0.547 -0.495 0.000
O4 -1.194 -1.471 0.000
H5 1.225 2.227 0.000
H6 1.871 0.841 0.888
H7 1.871 0.841 -0.888

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.43182.47673.62081.08851.09171.0917
N21.43181.19532.36332.06272.08862.0886
C32.47671.19531.17163.24822.90142.9014
O43.62082.36331.17164.41983.94073.9407
H51.08852.06273.24824.41981.76821.7682
H61.09172.08862.90143.94071.76821.7762
H71.09172.08862.90143.94071.76821.7762

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 140.879 N2 C1 H5 109.099
N2 C1 H6 111.004 N2 C1 H7 111.004
N2 C3 O4 173.703 H5 C1 H6 108.393
H5 C1 H7 108.393 H6 C1 H7 108.875
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/daug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.687      
2 N -0.237      
3 C 0.169      
4 O -0.838      
5 H 0.465      
6 H 0.564      
7 H 0.564      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.460 1.667 0.000 2.972
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.591 -0.623 0.000
y -0.623 -24.824 0.000
z 0.000 0.000 -22.553
Traceless
 xyz
x 1.098 -0.623 0.000
y -0.623 -2.252 0.000
z 0.000 0.000 1.154
Polar
3z2-r22.308
x2-y22.233
xy-0.623
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.597 1.888 0.000
y 1.888 6.395 0.000
z 0.000 0.000 3.933


<r2> (average value of r2) Å2
<r2> 83.422
(<r2>)1/2 9.134