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 HOCH2COOH (Hydroxyacetic acid)

using model chemistry: MP2/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A
Energy calculated at MP2/3-21G*
 hartrees
Energy at 0K-301.501082
Energy at 298.15K-301.506639
HF Energy-300.956867
Nuclear repulsion energy176.314850
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 MP2/3-21G*
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' 3504 3334 29.90      
2 A' 3478 3309 25.74      
3 A' 3092 2942 16.08      
4 A' 1730 1646 104.77      
5 A' 1607 1529 10.47      
6 A' 1498 1425 53.89      
7 A' 1392 1324 92.43      
8 A' 1345 1279 29.56      
9 A' 1120 1065 208.41      
10 A' 1034 984 137.04      
11 A' 837 797 32.89      
12 A' 640 609 17.34      
13 A' 465 442 29.88      
14 A' 279 265 7.86      
15 A" 3126 2974 22.73      
16 A" 1252 1191 2.23      
17 A" 1103 1050 0.31      
18 A" 656 624 178.44      
19 A" 524 499 12.21      
20 A" 324 308 89.75      
21 A" 71 67 22.01      

Unscaled Zero Point Vibrational Energy (zpe) 14539.0 cm-1
Scaled (by 0.9513) Zero Point Vibrational Energy (zpe) 13830.9 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 MP2/3-21G*
ABC
0.33924 0.13177 0.09664

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.628 -0.867 0.000
C2 0.000 0.521 0.000
O3 -0.960 1.512 0.000
O4 1.224 0.730 0.000
O5 0.427 -1.874 0.000
H6 -1.264 -0.958 0.888
H7 -1.264 -0.958 -0.888
H8 1.279 -1.358 0.000
H9 -0.506 2.399 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 O5 H6 H7 H8 H9
C11.52362.40242.44501.45781.09561.09561.96893.2686
C21.52361.37971.24122.43262.13822.13822.27321.9452
O32.40241.37972.31943.65882.64212.64213.64030.9963
O42.44501.24122.31942.72293.13413.13412.08882.4041
O51.45782.43263.65882.72292.11752.11750.99614.3737
H61.09562.13822.64213.13412.11751.77502.72273.5540
H71.09562.13822.64213.13412.11751.77502.72273.5540
H81.96892.27323.64032.08880.99612.72272.72274.1601
H93.26861.94520.99632.40414.37373.55403.55404.1601

picture of Hydroxyacetic acid state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 111.580 C1 C2 O4 124.019
C1 O5 H8 105.159 C2 C1 O5 109.338
C2 C1 H6 108.335 C2 C1 H7 108.335
C2 O3 H9 108.840 O3 C2 O4 124.401
O5 C1 H6 111.265 O5 C1 H7 111.265
H6 C1 H7 108.210
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability