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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: MP2=FULL/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at MP2=FULL/6-311G*
 hartrees
Energy at 0K-207.540990
Energy at 298.15K 
HF Energy-206.837416
Nuclear repulsion energy103.744950
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 MP2=FULL/6-311G*
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' 3208 3038 12.97 75.53 0.68 0.81
2 A' 3094 2930 45.80 144.52 0.01 0.02
3 A' 2397 2270 837.57 0.59 0.11 0.20
4 A' 1542 1460 7.04 9.62 0.71 0.83
5 A' 1503 1423 22.32 8.65 0.74 0.85
6 A' 1479 1401 23.83 31.31 0.28 0.44
7 A' 1177 1115 17.75 3.25 0.57 0.73
8 A' 901 853 27.44 16.20 0.21 0.35
9 A' 643 609 24.42 0.47 0.54 0.70
10 A' 183 173 19.42 1.73 0.70 0.82
11 A" 3179 3011 18.84 66.12 0.75 0.86
12 A" 1550 1468 7.86 15.21 0.75 0.86
13 A" 1157 1096 0.00 2.43 0.75 0.86
14 A" 590 558 19.57 0.52 0.75 0.86
15 A" 71 67 2.40 1.29 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11335.3 cm-1
Scaled (by 0.9471) Zero Point Vibrational Energy (zpe) 10735.6 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 MP2=FULL/6-311G*
ABC
2.47808 0.14591 0.14148

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.373 1.057 0.000
N2 0.000 0.609 0.000
C3 -0.569 -0.461 0.000
O4 -1.250 -1.423 0.000
H5 1.380 2.145 0.000
H6 1.896 0.702 0.890
H7 1.896 0.702 -0.890

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.44422.46433.60981.08801.09141.0914
N21.44421.21112.38552.06522.09682.0968
C32.46431.21111.17933.25372.86722.8672
O43.60982.38551.17934.43273.89993.8999
H51.08802.06523.25374.43271.77171.7717
H61.09142.09682.86723.89991.77171.7791
H71.09142.09682.86723.89991.77171.7791

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 136.096 N2 C1 H5 108.467
N2 C1 H6 110.805 N2 C1 H7 110.805
N2 C3 O4 172.727 H5 C1 H6 108.764
H5 C1 H7 108.764 H6 C1 H7 109.184
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability