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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: PBE1PBE/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at PBE1PBE/TZVP
 hartrees
Energy at 0K-207.825173
Energy at 298.15K 
HF Energy-207.825173
Nuclear repulsion energy104.358394
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 PBE1PBE/TZVP
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' 3146 3019 12.62 84.22 0.63 0.78
2 A' 3049 2926 44.92 198.40 0.01 0.03
3 A' 2445 2346 1144.18 3.55 0.04 0.08
4 A' 1552 1489 2.30 20.28 0.17 0.29
5 A' 1488 1428 10.53 18.28 0.63 0.77
6 A' 1462 1403 29.78 17.57 0.42 0.59
7 A' 1156 1109 14.70 2.52 0.65 0.78
8 A' 893 857 31.87 6.58 0.17 0.30
9 A' 643 617 33.51 0.55 0.65 0.79
10 A' 157 151 17.95 2.45 0.72 0.84
11 A" 3117 2991 18.20 77.97 0.75 0.86
12 A" 1502 1442 8.14 15.58 0.75 0.86
13 A" 1132 1086 0.00 1.66 0.75 0.86
14 A" 611 586 30.78 0.82 0.75 0.86
15 A" 48 46 3.18 1.68 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11200.3 cm-1
Scaled (by 0.9596) Zero Point Vibrational Energy (zpe) 10747.8 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 PBE1PBE/TZVP
ABC
3.02061 0.14370 0.14082

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.258 1.213 0.000
N2 0.000 0.544 0.000
C3 -0.527 -0.524 0.000
O4 -1.145 -1.518 0.000
H5 1.092 2.290 0.000
H6 1.840 0.955 0.889
H7 1.840 0.955 -0.889

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.42502.49083.63801.08971.09311.0931
N21.42501.19082.35872.05952.08402.0840
C32.49081.19081.17073.24652.92882.9288
O43.63802.35871.17074.41663.97683.9768
H51.08972.05953.24654.41661.76961.7696
H61.09312.08402.92883.97681.76961.7777
H71.09312.08402.92883.97681.76961.7777

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 144.275 N2 C1 H5 109.239
N2 C1 H6 111.026 N2 C1 H7 111.026
N2 C3 O4 174.398 H5 C1 H6 108.333
H5 C1 H7 108.333 H6 C1 H7 108.806
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.284      
2 N -0.236      
3 C 0.381      
4 O -0.300      
5 H 0.152      
6 H 0.143      
7 H 0.143      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.583 1.885 0.000 3.198
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.570 -0.601 0.000
y -0.601 -25.024 0.000
z 0.000 0.000 -22.536
Traceless
 xyz
x 1.209 -0.601 0.000
y -0.601 -2.471 0.000
z 0.000 0.000 1.261
Polar
3z2-r22.522
x2-y22.453
xy-0.601
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.606 1.933 0.000
y 1.933 6.061 0.000
z 0.000 0.000 3.175


<r2> (average value of r2) Å2
<r2> 83.848
(<r2>)1/2 9.157