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All results from a given calculation for C5H6O (Pentadienal)

using model chemistry: MP2/CEP-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 MP2/CEP-31G*
 hartrees
Energy at 0K-47.330898
Energy at 298.15K-47.336380
HF Energy-46.570308
Nuclear repulsion energy100.473693
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/CEP-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' 3292 3125 16.38      
2 A' 3227 3064 2.58      
3 A' 3212 3049 7.84      
4 A' 3187 3026 9.35      
5 A' 3182 3021 8.86      
6 A' 2986 2835 96.14      
7 A' 1735 1648 274.28      
8 A' 1710 1623 3.69      
9 A' 1642 1559 1.57      
10 A' 1464 1390 3.11      
11 A' 1408 1337 0.23      
12 A' 1326 1259 1.49      
13 A' 1319 1252 1.50      
14 A' 1268 1204 3.59      
15 A' 1206 1145 29.13      
16 A' 1152 1093 74.76      
17 A' 956 908 4.93      
18 A' 588 558 12.25      
19 A' 427 405 0.76      
20 A' 376 357 4.49      
21 A' 149 141 6.08      
22 A" 1063 1009 106.54      
23 A" 1009 958 0.07      
24 A" 1000 950 0.66      
25 A" 886 842 3.07      
26 A" 859 815 53.14      
27 A" 657 624 4.32      
28 A" 288 273 11.30      
29 A" 216 205 1.02      
30 A" 103 98 3.30      

Unscaled Zero Point Vibrational Energy (zpe) 20946.1 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 19886.2 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 MP2/CEP-31G*
ABC
0.91943 0.04336 0.04141

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.114 -1.607 0.000
O2 -1.106 -2.851 0.000
C3 0.111 -0.763 0.000
C4 0.000 0.611 0.000
C5 1.149 1.532 0.000
C6 0.993 2.899 0.000
H7 -2.079 -1.042 0.000
H8 1.084 -1.268 0.000
H9 -1.003 1.064 0.000
H10 2.154 1.093 0.000
H11 -0.004 3.354 0.000
H12 1.858 3.571 0.000

Atom - Atom Distances (Å)
  C1 O2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12
C11.24321.48752.48263.86994.97471.11832.22392.67334.23905.08385.9706
O21.24322.41643.63444.92896.12102.05312.70243.91555.11666.30167.0728
C31.48752.41641.37912.51913.76712.20751.09632.13952.76014.11874.6731
C42.48263.63441.37911.47232.49402.65632.16971.09982.20722.74253.4946
C53.86994.92892.51911.47231.37564.12862.80102.20181.09722.15572.1587
C64.97476.12103.76712.49401.37564.99724.16802.71162.14711.09621.0952
H71.11832.05312.20752.65634.12864.99723.17092.36494.74084.86126.0649
H82.22392.70241.09632.16972.80104.16803.17093.12902.59184.74824.9005
H92.67333.91552.13951.09982.20182.71162.36493.12903.15682.49853.8041
H104.23905.11662.76012.20721.09722.14714.74082.59183.15683.12572.4959
H115.08386.30164.11872.74252.15571.09624.86124.74822.49853.12571.8748
H125.97067.07284.67313.49462.15871.09526.06494.90053.80412.49591.8748

picture of Pentadienal state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 C4 119.957 C1 C3 H8 118.008
O2 C1 C3 124.237 O2 C1 H7 120.689
C3 C1 H7 115.073 C3 C4 C5 124.098
C3 C4 H9 118.896 C4 C3 H8 122.035
C4 C5 C6 122.233 C4 C5 H10 117.667
C5 C4 H9 117.007 C5 C6 H11 120.997
C5 C6 H12 121.364 C6 C5 H10 120.100
H11 C6 H12 117.639
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability