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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: B3LYP/daug-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/daug-cc-pVTZ
 hartrees
Energy at 0K-208.075011
Energy at 298.15K 
HF Energy-208.075011
Nuclear repulsion energy104.121703
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/daug-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' 3116 3116 13.37 73.50 0.61 0.76
2 A' 3031 3031 45.72 223.02 0.02 0.03
3 A' 2361 2361 1128.41 2.02 0.02 0.05
4 A' 1513 1513 0.18 8.23 0.12 0.21
5 A' 1484 1484 15.16 14.44 0.41 0.58
6 A' 1455 1455 31.02 19.02 0.20 0.33
7 A' 1156 1156 18.62 0.67 0.74 0.85
8 A' 870 870 29.42 8.34 0.11 0.20
9 A' 643 643 29.60 0.63 0.44 0.62
10 A' 170 170 17.23 2.18 0.62 0.76
11 A" 3087 3087 18.04 72.47 0.75 0.86
12 A" 1507 1507 6.91 7.28 0.75 0.86
13 A" 1132 1132 0.09 0.25 0.75 0.86
14 A" 597 597 21.16 0.62 0.75 0.86
15 A" 43 43 1.84 0.73 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11082.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 11082.4 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/daug-cc-pVTZ
ABC
2.73863 0.14479 0.14118

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.328 1.129 0.000
N2 0.000 0.572 0.000
C3 -0.554 -0.488 0.000
O4 -1.207 -1.463 0.000
H5 1.256 2.213 0.000
H6 1.880 0.818 0.888
H7 1.880 0.818 -0.888

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.43982.48103.62511.08711.09051.0905
N21.43981.19612.36582.06702.09342.0934
C32.48101.19611.17323.25192.90142.9014
O43.62512.36581.17324.42513.93943.9394
H51.08712.06703.25194.42511.76741.7674
H61.09052.09342.90143.93941.76741.7754
H71.09052.09342.90143.93941.76741.7754

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 140.347 N2 C1 H5 108.963
N2 C1 H6 110.899 N2 C1 H7 110.899
N2 C3 O4 173.793 H5 C1 H6 108.514
H5 C1 H7 108.514 H6 C1 H7 108.987
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/daug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.758      
2 N -0.160      
3 C 0.078      
4 O -0.800      
5 H 0.501      
6 H 0.570      
7 H 0.570      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.513 1.662 0.000 3.013
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.860 -0.688 0.000
y -0.688 -25.175 0.000
z 0.000 0.000 -22.785
Traceless
 xyz
x 1.120 -0.688 0.000
y -0.688 -2.353 0.000
z 0.000 0.000 1.233
Polar
3z2-r22.465
x2-y22.315
xy-0.688
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.680 1.894 0.000
y 1.894 6.424 0.000
z 0.000 0.000 3.980


<r2> (average value of r2) Å2
<r2> 83.761
(<r2>)1/2 9.152