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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: B3LYP/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/cc-pVTZ
 hartrees
Energy at 0K-208.071418
Energy at 298.15K 
HF Energy-208.071418
Nuclear repulsion energy104.152185
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/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' 3114 3010 15.67      
2 A' 3029 2927 45.89      
3 A' 2376 2297 1048.00      
4 A' 1516 1465 0.36      
5 A' 1485 1436 13.13      
6 A' 1457 1409 35.23      
7 A' 1157 1119 17.34      
8 A' 874 845 29.80      
9 A' 644 622 29.67      
10 A' 171 166 16.68      
11 A" 3085 2982 21.13      
12 A" 1508 1458 6.13      
13 A" 1133 1095 0.03      
14 A" 597 577 22.86      
15 A" 39 37 1.92      

Unscaled Zero Point Vibrational Energy (zpe) 11092.3 cm-1
Scaled (by 0.9666) Zero Point Vibrational Energy (zpe) 10721.8 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 B3LYP/cc-pVTZ
ABC
2.72464 0.14501 0.14135

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.330 1.123 0.000
N2 0.000 0.574 0.000
C3 -0.555 -0.486 0.000
O4 -1.210 -1.458 0.000
H5 1.265 2.208 0.000
H6 1.882 0.811 0.887
H7 1.882 0.811 -0.887

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.43892.47823.62171.08751.09081.0908
N21.43891.19642.36552.06702.09452.0945
C32.47821.19641.17273.25172.89992.8999
O43.62172.36551.17274.42433.93713.9371
H51.08752.06703.25174.42431.76691.7669
H61.09082.09452.89993.93711.76691.7747
H71.09082.09452.89993.93711.76691.7747

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 140.056 N2 C1 H5 109.012
N2 C1 H6 111.031 N2 C1 H7 111.031
N2 C3 O4 173.664 H5 C1 H6 108.411
H5 C1 H7 108.411 H6 C1 H7 108.870
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.136      
2 N -0.165      
3 C 0.231      
4 O -0.246      
5 H 0.110      
6 H 0.103      
7 H 0.103      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.473 1.595 0.000 2.943
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.573 -0.610 0.000
y -0.610 -24.867 0.000
z 0.000 0.000 -22.609
Traceless
 xyz
x 1.165 -0.610 0.000
y -0.610 -2.276 0.000
z 0.000 0.000 1.110
Polar
3z2-r22.220
x2-y22.294
xy-0.610
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.075 1.876 0.000
y 1.876 5.829 0.000
z 0.000 0.000 3.416


<r2> (average value of r2) Å2
<r2> 83.523
(<r2>)1/2 9.139