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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: B3LYP/aug-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 B3LYP/aug-cc-pVTZ
 hartrees
Energy at 0K-208.074732
Energy at 298.15K 
HF Energy-208.074732
Nuclear repulsion energy104.120112
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/aug-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' 3117 3015 13.34 73.55 0.61 0.76
2 A' 3031 2932 45.71 222.65 0.02 0.03
3 A' 2362 2286 1131.25 2.24 0.03 0.05
4 A' 1514 1465 0.16 8.22 0.12 0.22
5 A' 1484 1436 15.26 14.37 0.42 0.59
6 A' 1455 1408 31.04 19.07 0.20 0.33
7 A' 1156 1119 18.59 0.67 0.75 0.86
8 A' 870 842 29.52 8.33 0.11 0.20
9 A' 643 622 29.73 0.60 0.47 0.64
10 A' 169 164 17.26 2.19 0.63 0.77
11 A" 3087 2987 18.02 72.60 0.75 0.86
12 A" 1507 1458 6.93 7.29 0.75 0.86
13 A" 1132 1095 0.09 0.24 0.75 0.86
14 A" 598 578 21.28 0.60 0.75 0.86
15 A" 44 43 1.83 0.73 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11084.9 cm-1
Scaled (by 0.9675) Zero Point Vibrational Energy (zpe) 10724.7 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/aug-cc-pVTZ
ABC
2.74565 0.14473 0.14114

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.326 1.131 0.000
N2 0.000 0.571 0.000
C3 -0.554 -0.489 0.000
O4 -1.206 -1.464 0.000
H5 1.252 2.216 0.000
H6 1.879 0.822 0.888
H7 1.879 0.822 -0.888

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.43972.48163.62591.08721.09051.0905
N21.43971.19592.36582.06682.09332.0933
C32.48161.19591.17333.25192.90232.9023
O43.62592.36581.17334.42523.94073.9407
H51.08722.06683.25194.42521.76751.7675
H61.09052.09332.90233.94071.76751.7755
H71.09052.09332.90233.94071.76751.7755

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 140.451 N2 C1 H5 108.962
N2 C1 H6 110.895 N2 C1 H7 110.895
N2 C3 O4 173.804 H5 C1 H6 108.518
H5 C1 H7 108.518 H6 C1 H7 108.990
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.421      
2 N 0.110      
3 C -0.161      
4 O -0.338      
5 H 0.272      
6 H 0.269      
7 H 0.269      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.513 1.673 0.000 3.019
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.866 -0.701 0.000
y -0.701 -25.188 0.000
z 0.000 0.000 -22.780
Traceless
 xyz
x 1.118 -0.701 0.000
y -0.701 -2.365 0.000
z 0.000 0.000 1.246
Polar
3z2-r22.493
x2-y22.322
xy-0.701
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.660 1.903 0.000
y 1.903 6.412 0.000
z 0.000 0.000 3.954


<r2> (average value of r2) Å2
<r2> 83.782
(<r2>)1/2 9.153