return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CH2NOH (formaldoxime)

using model chemistry: CISD/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CISD/3-21G
 hartrees
Energy at 0K-168.207383
Energy at 298.15K-168.211248
HF Energy-167.895378
Nuclear repulsion energy 
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' 3611 3399 23.30      
2 A' 3295 3101 7.50      
3 A' 3192 3005 1.51      
4 A' 1709 1608 2.40      
5 A' 1521 1432 6.20      
6 A' 1365 1284 79.57      
7 A' 1226 1154 8.15      
8 A' 906 853 49.53      
9 A' 513 483 10.61      
10 A" 1048 987 47.77      
11 A" 813 765 0.27      
12 A" 367 345 178.82      

Unscaled Zero Point Vibrational Energy (zpe) 9781.8 cm-1
Scaled (by 0.9413) Zero Point Vibrational Energy (zpe) 9207.6 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 CISD/3-21G
ABC
2.11395 0.37916 0.32149

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.152 0.016 0.000
N2 0.000 0.576 0.000
O3 -1.044 -0.475 0.000
H4 1.287 -1.059 0.000
H5 2.020 0.661 0.000
H6 -1.869 0.065 0.000

Atom - Atom Distances (Å)
  C1 N2 O3 H4 H5 H6
C11.28082.25001.08371.08113.0216
N21.28081.48112.08062.02201.9378
O32.25001.48112.40253.26760.9863
H41.08372.08062.40251.86933.3501
H51.08112.02203.26761.86933.9348
H63.02161.93780.98633.35013.9348

picture of formaldoxime state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 O3 108.888 N2 C1 H4 123.058
N2 C1 H5 117.518 N2 O3 H6 101.625
H4 C1 H5 119.425
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability