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All results from a given calculation for CHOCH2OH (hydroxy acetaldehyde)

using model chemistry: QCISD/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS H in 1A'
Energy calculated at QCISD/6-31G**
 hartrees
Energy at 0K-228.433396
Energy at 298.15K-228.438242
HF Energy-227.771851
Nuclear repulsion energy119.275270
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/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3828 3604 55.98      
2 A' 3069 2889 77.57      
3 A' 3048 2870 37.40      
4 A' 1818 1711 97.97      
5 A' 1556 1465 6.02      
6 A' 1495 1407 79.68      
7 A' 1437 1353 14.96      
8 A' 1340 1261 50.18      
9 A' 1162 1094 67.17      
10 A' 899 846 44.59      
11 A' 770 725 12.47      
12 A' 310 292 21.90      
13 A" 3095 2914 34.67      
14 A" 1274 1199 2.60      
15 A" 1143 1076 0.49      
16 A" 761 716 0.67      
17 A" 379 357 94.67      
18 A" 144 135 11.89      

Unscaled Zero Point Vibrational Energy (zpe) 13763.8 cm-1
Scaled (by 0.9414) Zero Point Vibrational Energy (zpe) 12957.2 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/6-31G**
ABC
0.60778 0.21911 0.16601

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.942 0.000
C2 0.931 -0.250 0.000
O3 -1.347 0.543 0.000
O4 0.505 -1.393 0.000
H5 -1.334 -0.425 0.000
H6 0.233 1.554 0.881
H7 0.233 1.554 -0.881
H8 2.012 -0.037 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8
C11.51221.40462.38901.90971.09761.09762.2375
C21.51222.41191.22032.27182.12472.12471.1014
O31.40462.41192.67920.96782.07232.07233.4085
O42.38901.22032.67922.07843.08763.08762.0271
H51.90972.27180.96782.07842.67332.67333.3682
H61.09762.12472.07233.08762.67331.76172.5436
H71.09762.12472.07233.08762.67331.76172.5436
H82.23751.10143.40852.02713.36822.54362.5436

picture of hydroxy acetaldehyde state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O4 121.559 C1 C2 H8 116.889
C1 O3 H5 105.732 C2 C1 O3 111.510
C2 C1 H6 107.951 C2 C1 H7 107.951
O3 C1 H6 111.237 O3 C1 H7 111.237
O4 C2 H8 121.552 H6 C1 H7 106.748
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability