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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: B3PW91/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at B3PW91/6-31G
 hartrees
Energy at 0K-207.831397
Energy at 298.15K 
HF Energy-207.831397
Nuclear repulsion energy102.800511
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 B3PW91/6-31G
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 3018 15.87      
2 A' 3051 2922 47.91      
3 A' 2438 2335 866.24      
4 A' 1538 1473 6.01      
5 A' 1518 1453 28.77      
6 A' 1487 1424 3.06      
7 A' 1182 1132 6.14      
8 A' 849 814 36.29      
9 A' 529 507 28.19      
10 A' 117 112 14.66      
11 A" 3127 2995 20.83      
12 A" 1544 1479 10.32      
13 A" 1165 1116 0.03      
14 A" 513 492 29.07      
15 A" 49 46 8.00      

Unscaled Zero Point Vibrational Energy (zpe) 11129.0 cm-1
Scaled (by 0.9577) Zero Point Vibrational Energy (zpe) 10658.2 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 B3PW91/6-31G
ABC
4.11494 0.13455 0.13358

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.935 1.544 0.000
N2 0.000 0.473 0.000
C3 -0.379 -0.660 0.000
O4 -0.861 -1.766 0.000
H5 0.402 2.498 0.000
H6 1.574 1.507 0.890
H7 1.574 1.507 -0.890

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.42232.56603.76591.09271.09581.0958
N21.42231.19402.39832.06492.08312.0831
C32.56601.19401.20653.25293.04973.0497
O43.76592.39831.20654.44704.17524.1752
H51.09272.06493.25294.44701.77391.7739
H61.09582.08313.04974.17521.77391.7794
H71.09582.08313.04974.17521.77391.7794

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 157.392 N2 C1 H5 109.680
N2 C1 H6 110.964 N2 C1 H7 110.964
N2 C3 O4 174.970 H5 C1 H6 108.295
H5 C1 H7 108.295 H6 C1 H7 108.560
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.296      
2 N -0.359      
3 C 0.445      
4 O -0.396      
5 H 0.206      
6 H 0.200      
7 H 0.200      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.289 3.127 0.000 3.875
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.389 -0.508 0.000
y -0.508 -25.088 0.000
z 0.000 0.000 -22.345
Traceless
 xyz
x 1.328 -0.508 0.000
y -0.508 -2.722 0.000
z 0.000 0.000 1.394
Polar
3z2-r22.788
x2-y22.699
xy-0.508
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.319 1.683 0.000
y 1.683 6.402 0.000
z 0.000 0.000 2.534


<r2> (average value of r2) Å2
<r2> 87.485
(<r2>)1/2 9.353