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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: PBEPBE/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at PBEPBE/cc-pVDZ
 hartrees
Energy at 0K-207.764655
Energy at 298.15K 
HF Energy-207.764655
Nuclear repulsion energy103.007940
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 PBEPBE/cc-pVDZ
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' 3061 3043 13.97 94.75 0.65 0.79
2 A' 2956 2939 53.86 197.84 0.02 0.04
3 A' 2331 2317 750.52 1.55 0.02 0.03
4 A' 1461 1453 3.23 12.48 0.16 0.27
5 A' 1410 1402 8.04 24.10 0.59 0.74
6 A' 1387 1379 39.32 23.81 0.41 0.58
7 A' 1104 1098 14.13 1.57 0.50 0.66
8 A' 882 876 25.37 6.68 0.22 0.35
9 A' 607 604 18.95 0.62 0.75 0.86
10 A' 185 184 14.25 2.56 0.57 0.73
11 A" 3027 3009 20.46 91.09 0.75 0.86
12 A" 1425 1417 5.48 19.49 0.75 0.86
13 A" 1072 1065 0.19 1.91 0.75 0.86
14 A" 545 541 14.51 0.60 0.75 0.86
15 A" 50 49 1.65 0.80 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10750.4 cm-1
Scaled (by 0.9942) Zero Point Vibrational Energy (zpe) 10688.0 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 PBEPBE/cc-pVDZ
ABC
2.50544 0.14364 0.13953

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.359 1.085 0.000
N2 0.000 0.607 0.000
C3 -0.559 -0.478 0.000
O4 -1.248 -1.447 0.000
H5 1.353 2.191 0.000
H6 1.913 0.746 0.901
H7 1.913 0.746 -0.901

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.44092.47393.63421.10671.11061.1106
N21.44091.22012.40342.08332.11882.1188
C32.47391.22011.18943.28292.90092.9009
O43.63422.40341.18944.47233.95073.9507
H51.10672.08333.28294.47231.79341.7934
H61.11062.11882.90093.95071.79341.8026
H71.11062.11882.90093.95071.79341.8026

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 136.613 N2 C1 H5 109.015
N2 C1 H6 111.632 N2 C1 H7 111.632
N2 C3 O4 171.842 H5 C1 H6 107.963
H5 C1 H7 107.963 H6 C1 H7 108.501
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.024      
2 N -0.231      
3 C 0.178      
4 O -0.144      
5 H 0.058      
6 H 0.057      
7 H 0.057      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.253 1.258 0.000 2.580
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.115 -0.331 0.000
y -0.331 -24.135 0.000
z 0.000 0.000 -22.379
Traceless
 xyz
x 1.142 -0.331 0.000
y -0.331 -1.888 0.000
z 0.000 0.000 0.746
Polar
3z2-r21.492
x2-y22.020
xy-0.331
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.831 1.988 0.000
y 1.988 5.439 0.000
z 0.000 0.000 2.974


<r2> (average value of r2) Å2
<r2> 84.149
(<r2>)1/2 9.173