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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: B3LYP/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at B3LYP/6-311+G(3df,2p)
 hartrees
Energy at 0K-208.070449
Energy at 298.15K 
HF Energy-208.070449
Nuclear repulsion energy104.174358
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 B3LYP/6-311+G(3df,2p)
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' 3114 3011 13.48 73.23 0.62 0.77
2 A' 3028 2928 45.67 200.24 0.02 0.03
3 A' 2370 2292 1131.87 1.90 0.03 0.05
4 A' 1517 1467 0.19 8.01 0.13 0.23
5 A' 1486 1437 15.46 14.15 0.43 0.61
6 A' 1458 1410 30.95 17.46 0.21 0.35
7 A' 1157 1119 18.34 0.72 0.75 0.86
8 A' 872 843 29.67 8.46 0.11 0.20
9 A' 645 624 30.27 0.57 0.51 0.68
10 A' 169 164 17.25 2.17 0.65 0.79
11 A" 3085 2983 18.06 72.29 0.75 0.86
12 A" 1509 1460 7.23 7.62 0.75 0.86
13 A" 1134 1097 0.07 0.31 0.75 0.86
14 A" 601 581 22.43 0.50 0.75 0.86
15 A" 40 39 1.89 0.74 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11092.7 cm-1
Scaled (by 0.967) Zero Point Vibrational Energy (zpe) 10726.6 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 B3LYP/6-311+G(3df,2p)
ABC
2.73900 0.14494 0.14132

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.328 1.128 0.000
N2 0.000 0.572 0.000
C3 -0.555 -0.488 0.000
O4 -1.207 -1.461 0.000
H5 1.257 2.213 0.000
H6 1.880 0.817 0.888
H7 1.880 0.817 -0.888

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.43922.48043.62281.08721.09061.0906
N21.43921.19602.36432.06712.09342.0934
C32.48041.19601.17173.25202.90152.9015
O43.62282.36431.17174.42373.93783.9378
H51.08722.06713.25204.42371.76711.7671
H61.09062.09342.90153.93781.76711.7752
H71.09062.09342.90153.93781.76711.7752

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 140.356 N2 C1 H5 109.016
N2 C1 H6 110.937 N2 C1 H7 110.937
N2 C3 O4 173.841 H5 C1 H6 108.465
H5 C1 H7 108.465 H6 C1 H7 108.953
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.042      
2 N -0.903      
3 C 1.119      
4 O -0.623      
5 H 0.147      
6 H 0.151      
7 H 0.151      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.525 1.660 0.000 3.022
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.853 -0.710 0.000
y -0.710 -25.209 0.000
z 0.000 0.000 -22.781
Traceless
 xyz
x 1.142 -0.710 0.000
y -0.710 -2.392 0.000
z 0.000 0.000 1.249
Polar
3z2-r22.499
x2-y22.356
xy-0.710
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.539 1.925 0.000
y 1.925 6.322 0.000
z 0.000 0.000 3.829


<r2> (average value of r2) Å2
<r2> 83.702
(<r2>)1/2 9.149