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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: B2PLYP=FULL/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 B2PLYP=FULL/TZVP
 hartrees
Energy at 0K-207.895072
Energy at 298.15K 
HF Energy-207.658128
Nuclear repulsion energy103.953300
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/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' 3166 3021 13.92 79.28 0.63 0.77
2 A' 3066 2926 46.73 181.70 0.01 0.02
3 A' 2375 2266 994.94 1.38 0.03 0.06
4 A' 1523 1454 1.48 6.17 0.52 0.68
5 A' 1493 1425 20.90 11.44 0.58 0.74
6 A' 1472 1404 29.23 31.45 0.27 0.43
7 A' 1172 1118 18.24 3.17 0.65 0.78
8 A' 874 834 32.42 11.07 0.17 0.29
9 A' 638 609 29.49 0.57 0.61 0.76
10 A' 174 166 18.00 2.32 0.73 0.84
11 A" 3134 2991 20.29 71.20 0.75 0.86
12 A" 1522 1453 6.81 15.02 0.75 0.86
13 A" 1147 1094 0.22 2.06 0.75 0.86
14 A" 596 569 26.11 0.73 0.75 0.86
15 A" 61 58 2.62 1.70 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11207.2 cm-1
Scaled (by 0.9542) Zero Point Vibrational Energy (zpe) 10693.9 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/TZVP
ABC
2.70851 0.14450 0.14082

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.332 1.126 0.000
N2 0.000 0.577 0.000
C3 -0.555 -0.486 0.000
O4 -1.210 -1.464 0.000
H5 1.264 2.209 0.000
H6 1.880 0.811 0.888
H7 1.880 0.811 -0.888

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.44052.48183.62911.08591.08961.0896
N21.44051.19962.37332.06412.09212.0921
C32.48181.19961.17723.25172.89832.8983
O43.62912.37331.17724.42893.93863.9386
H51.08592.06413.25174.42891.76751.7675
H61.08962.09212.89833.93861.76751.7751
H71.08962.09212.89833.93861.76751.7751

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 139.951 N2 C1 H5 108.759
N2 C1 H6 110.798 N2 C1 H7 110.798
N2 C3 O4 173.779 H5 C1 H6 108.671
H5 C1 H7 108.671 H6 C1 H7 109.091
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability