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All results from a given calculation for HOCH2CN (cyanomethanol)

using model chemistry: QCISD/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 QCISD/3-21G*
Rotational Constants (cm-1) from geometry optimized at QCISD/3-21G*
See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/3-21G*
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1)

Jump to S1C1
Energy calculated at QCISD/3-21G*
 hartrees
Energy at 0K-206.038594
Energy at 298.15K-206.042037
HF Energy-205.606839
Nuclear repulsion energy100.139565
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 QCISD/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 3474 3339 2.60      
2 A 3109 2988 5.34      
3 A 3023 2905 24.08      
4 A 2284 2195 5.93      
5 A 1568 1507 2.87      
6 A 1428 1372 25.71      
7 A 1410 1355 0.63      
8 A 1271 1222 21.20      
9 A 1017 978 1.08      
10 A 980 942 78.89      
11 A 872 838 27.70      
12 A 584 561 2.47      
13 A 441 424 55.29      
14 A 342 329 122.15      
15 A 227 218 6.42      

Unscaled Zero Point Vibrational Energy (zpe) 11014.5 cm-1
Scaled (by 0.9611) Zero Point Vibrational Energy (zpe) 10586.0 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 QCISD/3-21G*
ABC
1.05526 0.15599 0.14102

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.563 0.616 0.037
C2 0.842 0.123 0.003
O3 -1.541 -0.468 -0.116
H4 -0.712 1.195 0.962
H5 -0.733 1.280 -0.817
H6 -1.455 -1.063 0.676
N7 1.936 -0.300 -0.019

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 N7
C11.48891.46821.10171.09572.00552.6617
C21.48892.45812.11732.11982.67111.1732
O31.46822.45812.14872.04930.99453.4822
H41.10172.11732.14871.78172.39423.1950
H51.09572.11982.04931.78172.87063.2032
H62.00552.67110.99452.39422.87063.5442
N72.66171.17323.48223.19503.20323.5442

picture of cyanomethanol state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N7 178.152 C1 O3 H6 107.490
C2 C1 O3 112.457 C2 C1 H4 108.717
C2 C1 H5 109.261 O3 C1 H4 112.687
O3 C1 H5 105.204 H4 C1 H5 108.357
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability