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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: B2PLYP=FULL/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 B2PLYP=FULL/cc-pVTZ
 hartrees
Energy at 0K-207.928690
Energy at 298.15K 
HF Energy-207.663485
Nuclear repulsion energy104.104358
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 B2PLYP=FULL/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' 3155 3015 13.61 74.95 0.63 0.78
2 A' 3065 2929 45.07 182.10 0.01 0.02
3 A' 2366 2262 949.59 1.24 0.00 0.01
4 A' 1522 1455 2.86 5.43 0.55 0.71
5 A' 1487 1422 14.97 10.34 0.48 0.65
6 A' 1464 1399 33.85 25.58 0.24 0.39
7 A' 1167 1115 18.19 1.33 0.64 0.78
8 A' 881 842 27.96 10.86 0.17 0.29
9 A' 641 613 27.44 0.39 0.75 0.86
10 A' 177 169 17.25 1.75 0.65 0.79
11 A" 3127 2989 18.55 69.10 0.75 0.86
12 A" 1526 1459 6.20 10.92 0.75 0.86
13 A" 1142 1092 0.07 0.95 0.75 0.86
14 A" 592 566 20.28 0.54 0.75 0.86
15 A" 41 39 1.87 0.80 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11176.0 cm-1
Scaled (by 0.9558) Zero Point Vibrational Energy (zpe) 10682.0 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 B2PLYP=FULL/cc-pVTZ
ABC
2.63309 0.14563 0.14166

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.347 1.095 0.000
N2 0.000 0.587 0.000
C3 -0.560 -0.475 0.000
O4 -1.226 -1.443 0.000
H5 1.311 2.179 0.000
H6 1.886 0.766 0.885
H7 1.886 0.766 -0.885

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.43942.47003.61421.08431.08761.0876
N21.43941.20052.37182.06262.09102.0910
C32.47001.20051.17533.24742.88202.8820
O43.61422.37181.17534.42263.91773.9177
H51.08432.06263.24744.42261.76341.7634
H61.08762.09102.88203.91771.76341.7709
H71.08762.09102.88203.91771.76341.7709

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 138.472 N2 C1 H5 108.812
N2 C1 H6 110.913 N2 C1 H7 110.913
N2 C3 O4 173.300 H5 C1 H6 108.567
H5 C1 H7 108.567 H6 C1 H7 109.007
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability