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 C2H4O3 (1,2,3-trioxolane)

using model chemistry: QCISD(T)/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at QCISD(T)/6-31G*
 hartrees
Energy at 0K-303.291469
Energy at 298.15K-303.297927
HF Energy-302.419511
Nuclear repulsion energy191.367476
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(T)/6-31G*
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' 3150 3022        
2 A' 3076 2951        
3 A' 1556 1493        
4 A' 1365 1309        
5 A' 1253 1202        
6 A' 1019 978        
7 A' 955 916        
8 A' 877 841        
9 A' 853 818        
10 A' 689 661        
11 A' 409 393        
12 A" 3133 3006        
13 A" 3066 2941        
14 A" 1539 1476        
15 A" 1361 1306        
16 A" 1240 1189        
17 A" 1168 1121        
18 A" 1034 992        
19 A" 736 706        
20 A" 667 640        
21 A" 110 105        

Unscaled Zero Point Vibrational Energy (zpe) 14627.9 cm-1
Scaled (by 0.9593) Zero Point Vibrational Energy (zpe) 14032.5 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(T)/6-31G*
ABC
0.26980 0.24745 0.14551

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -0.605 -1.053 0.000
O2 0.150 -0.490 1.125
O3 0.150 -0.490 -1.125
C4 0.150 0.901 0.777
C5 0.150 0.901 -0.777
H6 1.058 1.325 1.221
H7 1.058 1.325 -1.221
H8 -0.742 1.403 1.174
H9 -0.742 1.403 -1.174

Atom - Atom Distances (Å)
  O1 O2 O3 C4 C5 H6 H7 H8 H9
O11.46651.46652.23372.23373.14803.14802.72562.7256
O21.46652.24931.43372.35652.03243.10192.09413.1091
O31.46652.24932.35651.43373.10192.03243.10912.0941
C42.23371.43372.35651.55491.09602.23541.09832.2038
C52.23372.35651.43371.55492.23541.09602.20381.0983
H63.14802.03243.10191.09602.23542.44131.80262.9969
H73.14803.10192.03242.23541.09602.44132.99691.8026
H82.72562.09413.10911.09832.20381.80262.99692.3479
H92.72563.10912.09412.20381.09832.99691.80262.3479

picture of 1,2,3-trioxolane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 O2 C4 100.733 O1 O3 C5 100.733
O2 O1 O3 100.149 O2 C4 C5 104.014
O2 C4 H6 106.145 O2 C4 H8 110.897
O3 C5 C4 104.014 O3 C5 H7 106.145
O3 C5 H9 110.897 C4 C5 H7 113.854
C4 C5 H9 111.163 C5 C4 H6 113.854
C5 C4 H8 111.163 H6 C4 H8 110.467
H7 C5 H9 110.467
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability