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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: mPW1PW91/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at mPW1PW91/6-311G**
 hartrees
Energy at 0K-207.989361
Energy at 298.15K 
HF Energy-207.989361
Nuclear repulsion energy104.374837
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 mPW1PW91/6-311G**
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' 3151 3014 16.18 83.02 0.65 0.79
2 A' 3053 2920 46.62 175.62 0.01 0.03
3 A' 2437 2332 1065.60 2.33 0.04 0.07
4 A' 1543 1476 2.78 13.21 0.15 0.26
5 A' 1493 1428 11.10 18.71 0.64 0.78
6 A' 1463 1400 31.64 18.33 0.44 0.61
7 A' 1158 1108 15.23 2.05 0.59 0.75
8 A' 900 861 31.37 7.19 0.21 0.34
9 A' 648 620 31.09 0.41 0.66 0.80
10 A' 167 160 17.64 1.79 0.68 0.81
11 A" 3120 2985 22.57 76.40 0.75 0.86
12 A" 1510 1445 7.58 14.74 0.75 0.86
13 A" 1133 1084 0.00 1.73 0.75 0.86
14 A" 607 580 28.05 0.67 0.75 0.86
15 A" 52 50 2.65 1.03 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11216.4 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 10730.8 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 mPW1PW91/6-311G**
ABC
2.78557 0.14531 0.14181

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.312 1.140 0.000
N2 0.000 0.568 0.000
C3 -0.549 -0.494 0.000
O4 -1.194 -1.468 0.000
H5 1.227 2.225 0.000
H6 1.872 0.838 0.888
H7 1.872 0.838 -0.888

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.43122.47593.61681.08901.09251.0925
N21.43121.19502.36022.06232.08962.0896
C32.47591.19501.16873.24762.90222.9022
O43.61682.36021.16874.41633.93823.9382
H51.08902.06233.24764.41631.76871.7687
H61.09252.08962.90223.93821.76871.7770
H71.09252.08962.90223.93821.76871.7770

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 140.883 N2 C1 H5 109.078
N2 C1 H6 111.074 N2 C1 H7 111.074
N2 C3 O4 173.810 H5 C1 H6 108.350
H5 C1 H7 108.350 H6 C1 H7 108.836
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.195      
2 N -0.439      
3 C 0.513      
4 O -0.302      
5 H 0.144      
6 H 0.140      
7 H 0.140      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.519 1.580 0.000 2.973
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.188 -0.501 0.000
y -0.501 -24.580 0.000
z 0.000 0.000 -22.324
Traceless
 xyz
x 1.264 -0.501 0.000
y -0.501 -2.323 0.000
z 0.000 0.000 1.059
Polar
3z2-r22.119
x2-y22.392
xy-0.501
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.486 1.862 0.000
y 1.862 5.477 0.000
z 0.000 0.000 2.940


<r2> (average value of r2) Å2
<r2> 83.131
(<r2>)1/2 9.118