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 C5H6O (Pentadienal)

using model chemistry: MP2/aug-cc-pVTZ

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/aug-cc-pVTZ
 hartrees
Energy at 0K-268.791714
Energy at 298.15K-268.797223
HF Energy-267.750365
Nuclear repulsion energy193.910797
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/aug-cc-pVTZ
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' 3279 3124 3.81      
2 A' 3209 3057 1.75      
3 A' 3193 3043 4.20      
4 A' 3175 3026 3.13      
5 A' 3157 3008 4.33      
6 A' 2942 2804 76.30      
7 A' 1724 1643 283.01      
8 A' 1692 1612 15.91      
9 A' 1634 1557 7.25      
10 A' 1458 1389 3.86      
11 A' 1408 1342 0.05      
12 A' 1318 1256 1.57      
13 A' 1312 1250 2.06      
14 A' 1256 1197 3.38      
15 A' 1195 1138 30.34      
16 A' 1138 1084 82.60      
17 A' 963 918 3.24      
18 A' 596 568 12.11      
19 A' 430 410 0.78      
20 A' 379 361 3.68      
21 A' 148 141 6.47      
22 A" 1046 997 52.04      
23 A" 1016 968 2.92      
24 A" 976 930 7.83      
25 A" 949 904 27.63      
26 A" 864 824 5.91      
27 A" 652 621 2.62      
28 A" 283 270 7.18      
29 A" 203 193 2.03      
30 A" 92 87 3.00      

Unscaled Zero Point Vibrational Energy (zpe) 20841.5 cm-1
Scaled (by 0.9529) Zero Point Vibrational Energy (zpe) 19859.9 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/aug-cc-pVTZ
ABC
0.95607 0.04493 0.04292

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.092 -1.582 0.000
O2 -1.081 -2.803 0.000
C3 0.107 -0.745 0.000
C4 0.000 0.599 0.000
C5 1.123 1.511 0.000
C6 0.975 2.846 0.000
H7 -2.048 -1.024 0.000
H8 1.070 -1.244 0.000
H9 -0.995 1.038 0.000
H10 2.117 1.078 0.000
H11 -0.010 3.294 0.000
H12 1.829 3.507 0.000

Atom - Atom Distances (Å)
  C1 O2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12
C11.22081.46222.43903.80414.88631.10682.18752.62184.16804.99445.8680
O21.22082.37593.56944.84416.01102.02432.65593.84185.02886.19006.9488
C31.46222.37591.34862.47443.69432.17321.08362.09682.71364.04104.5880
C42.43903.56941.34861.44662.44912.61312.13091.08782.17072.69493.4358
C53.80414.84412.47441.44661.34284.05972.75552.17031.08442.11262.1176
C64.88636.01103.69432.44911.34284.91064.09072.67392.10431.08261.0804
H71.10682.02432.17322.61314.05974.91063.12502.31544.66544.77485.9638
H82.18752.65591.08362.13092.75554.09073.12503.07752.54754.66464.8117
H92.62183.84182.09681.08782.17032.67392.31543.07753.11262.46153.7516
H104.16805.02882.71362.17071.08442.10434.66542.54753.11263.07182.4463
H114.99446.19004.04102.69492.11261.08264.77484.66462.46153.07181.8518
H125.86806.94884.58803.43582.11761.08045.96384.81173.75162.44631.8518

picture of Pentadienal state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 C4 120.334 C1 C3 H8 117.698
O2 C1 C3 124.395 O2 C1 H7 120.764
C3 C1 H7 114.841 C3 C4 C5 124.513
C3 C4 H9 118.376 C4 C3 H8 121.968
C4 C5 C6 122.764 C4 C5 H10 117.387
C5 C4 H9 117.111 C5 C6 H11 120.781
C5 C6 H12 121.450 C6 C5 H10 119.849
H11 C6 H12 117.768
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability