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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: PBEPBEultrafine/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at PBEPBEultrafine/6-31+G**
 hartrees
Energy at 0K-207.764503
Energy at 298.15K 
HF Energy-207.764503
Nuclear repulsion energy102.908116
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 PBEPBEultrafine/6-31+G**
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' 3073 3038 11.80 88.78 0.66 0.80
2 A' 2971 2937 55.41 212.92 0.03 0.05
3 A' 2328 2301 882.08 1.47 0.02 0.04
4 A' 1470 1453 0.59 11.53 0.13 0.22
5 A' 1438 1421 14.35 22.56 0.46 0.63
6 A' 1412 1396 28.19 25.55 0.42 0.59
7 A' 1118 1105 14.87 1.92 0.69 0.82
8 A' 863 853 27.01 8.08 0.13 0.23
9 A' 585 579 22.19 0.95 0.71 0.83
10 A' 170 168 16.81 3.44 0.72 0.84
11 A" 3040 3005 18.97 93.94 0.75 0.86
12 A" 1458 1442 7.31 14.60 0.75 0.86
13 A" 1090 1077 0.05 1.20 0.75 0.86
14 A" 542 536 18.65 0.57 0.75 0.86
15 A" 58 57 2.81 1.51 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10807.0 cm-1
Scaled (by 0.9886) Zero Point Vibrational Energy (zpe) 10683.8 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 PBEPBEultrafine/6-31+G**
ABC
2.72817 0.14142 0.13803

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.320 1.159 0.000
N2 0.000 0.582 0.000
C3 -0.541 -0.507 0.000
O4 -1.210 -1.495 0.000
H5 1.230 2.255 0.000
H6 1.887 0.857 0.898
H7 1.887 0.857 -0.898

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.44082.49743.66671.09981.10361.1036
N21.44081.21562.40372.07622.10772.1077
C32.49741.21561.19353.28032.92572.9257
O43.66672.40371.19354.47363.99143.9914
H51.09982.07623.28034.47361.78641.7864
H61.10362.10772.92573.99141.78641.7953
H71.10362.10772.92573.99141.78641.7953

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 139.998 N2 C1 H5 108.872
N2 C1 H6 111.178 N2 C1 H7 111.178
N2 C3 O4 172.267 H5 C1 H6 108.337
H5 C1 H7 108.337 H6 C1 H7 108.855
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.434      
2 N -0.289      
3 C 0.607      
4 O -0.432      
5 H 0.184      
6 H 0.182      
7 H 0.182      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.624 1.668 0.000 3.109
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.789 -0.427 0.000
y -0.427 -25.167 0.000
z 0.000 0.000 -22.944
Traceless
 xyz
x 1.266 -0.427 0.000
y -0.427 -2.300 0.000
z 0.000 0.000 1.034
Polar
3z2-r22.068
x2-y22.378
xy-0.427
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.202 2.161 0.000
y 2.161 6.402 0.000
z 0.000 0.000 3.410


<r2> (average value of r2) Å2
<r2> 85.334
(<r2>)1/2 9.238