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All results from a given calculation for C2H5OO (ethylperoxy radical)

using model chemistry: ROHF/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at ROHF/3-21G
 hartrees
Energy at 0K-226.995245
Energy at 298.15K-227.001284
HF Energy-226.995245
Nuclear repulsion energy121.305544
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 ROHF/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' 3282 2977 25.14      
2 A' 3254 2951 11.72      
3 A' 3217 2917 12.04      
4 A' 1694 1536 4.86      
5 A' 1672 1517 6.10      
6 A' 1578 1431 11.65      
7 A' 1524 1382 21.09      
8 A' 1247 1131 23.30      
9 A' 1074 975 32.32      
10 A' 966 876 12.55      
11 A' 813 737 3.00      
12 A' 491 445 5.78      
13 A' 305 276 0.69      
14 A" 3314 3006 46.39      
15 A" 3284 2978 0.36      
16 A" 1656 1502 6.56      
17 A" 1411 1280 0.15      
18 A" 1276 1158 7.07      
19 A" 915 830 1.17      
20 A" 243 220 0.95      
21 A" 101 92 0.52      

Unscaled Zero Point Vibrational Energy (zpe) 16657.5 cm-1
Scaled (by 0.907) Zero Point Vibrational Energy (zpe) 15108.4 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 ROHF/3-21G
ABC
1.07061 0.14289 0.13225

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.504 0.931 0.000
C2 0.000 0.682 0.000
O3 -0.156 -0.777 0.000
O4 -1.555 -1.074 0.000
H5 1.704 1.995 0.000
H6 1.954 0.488 0.879
H7 1.954 0.488 -0.879
H8 -0.475 1.081 -0.883
H9 -0.475 1.081 0.883

Atom - Atom Distances (Å)
  C1 C2 O3 O4 H5 H6 H7 H8 H9
C11.52442.38153.65761.08341.08181.08182.17182.1718
C21.52441.46802.34602.15122.15102.15101.07871.0787
O32.38151.46801.43083.33862.61212.61212.08222.0822
O43.65762.34601.43084.47713.94023.94022.56762.5676
H51.08342.15123.33864.47711.76251.76252.52212.5221
H61.08182.15102.61213.94021.76251.75803.05792.4995
H71.08182.15102.61213.94021.76251.75802.49953.0579
H82.17181.07872.08222.56762.52213.05792.49951.7655
H92.17181.07872.08222.56762.52212.49953.05791.7655

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