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All results from a given calculation for HOCH2CN (cyanomethanol)

using model chemistry: CISD/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 2 yes C1 1A

Conformer 1 (Cs)

Jump to S1C2
Vibrational Frequencies calculated at CISD/3-21G*
Rotational Constants (cm-1) from geometry optimized at CISD/3-21G*
See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/3-21G*
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1)

Jump to S1C1
Energy calculated at CISD/3-21G*
 hartrees
Energy at 0K-205.985676
Energy at 298.15K-205.989200
HF Energy-205.610170
Nuclear repulsion energy100.999734
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 CISD/3-21G*
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 3628 3390 7.90      
2 A 3195 2985 4.44      
3 A 3112 2908 21.31      
4 A 2411 2253 2.36      
5 A 1606 1500 3.49      
6 A 1461 1365 21.65      
7 A 1444 1350 6.14      
8 A 1304 1218 22.73      
9 A 1058 989 14.40      
10 A 1019 952 78.28      
11 A 906 847 31.73      
12 A 613 572 2.03      
13 A 456 426 43.84      
14 A 349 326 146.96      
15 A 237 222 6.99      

Unscaled Zero Point Vibrational Energy (zpe) 11399.6 cm-1
Scaled (by 0.9344) Zero Point Vibrational Energy (zpe) 10651.8 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 CISD/3-21G*
ABC
1.07461 0.15855 0.14335

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/3-21G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.558 0.611 0.037
C2 0.837 0.119 0.003
O3 -1.528 -0.462 -0.115
H4 -0.706 1.183 0.958
H5 -0.724 1.276 -0.809
H6 -1.456 -1.063 0.661
N7 1.919 -0.297 -0.018

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 N7
C11.47961.45451.09461.08891.99912.6390
C21.47962.43852.10362.10612.66231.1596
O31.45452.43852.12962.03660.98443.4529
H41.09462.10362.12961.76992.38643.1678
H51.08892.10612.03661.76992.85763.1761
H61.99912.66230.98442.38642.85763.5270
N72.63901.15963.45293.16783.17613.5270

picture of cyanomethanol state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N7 178.371 C1 O3 H6 108.575
C2 C1 O3 112.420 C2 C1 H4 108.688
C2 C1 H5 109.215 O3 C1 H4 112.567
O3 C1 H5 105.498 H4 C1 H5 108.302
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability