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All results from a given calculation for C5H6O (Pentadienal)

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 1A'
Energy calculated at QCISD/6-31G*
 hartrees
Energy at 0K-268.498534
Energy at 298.15K-268.503995
HF Energy-267.648162
Nuclear repulsion energy192.910162
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
4/u)
Dep P Dep U
1 A' 3265 3110 12.06      
2 A' 3207 3054 4.73      
3 A' 3187 3035 5.08      
4 A' 3176 3025 9.96      
5 A' 3156 3006 7.47      
6 A' 2950 2809 92.44      
7 A' 1800 1715 276.19      
8 A' 1753 1669 7.45      
9 A' 1685 1605 7.61      
10 A' 1489 1418 2.52      
11 A' 1445 1376 1.12      
12 A' 1354 1290 2.36      
13 A' 1347 1282 2.48      
14 A' 1295 1233 1.20      
15 A' 1220 1162 26.42      
16 A' 1144 1090 81.15      
17 A' 981 934 3.02      
18 A' 608 579 12.79      
19 A' 435 414 0.83      
20 A' 388 370 4.59      
21 A' 152 145 5.99      
22 A" 1041 991 40.79      
23 A" 1019 970 13.98      
24 A" 990 943 3.60      
25 A" 942 897 34.66      
26 A" 858 817 6.35      
27 A" 645 614 2.09      
28 A" 272 259 7.41      
29 A" 192 183 1.64      
30 A" 90 86 3.54      

Unscaled Zero Point Vibrational Energy (zpe) 21043.0 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 20039.2 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
0.95065 0.04439 0.04241

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 -1.125 -1.583 0.000
O2 -1.109 -2.806 0.000
C3 0.087 -0.743 0.000
C4 0.000 0.602 0.000
C5 1.148 1.508 0.000
C6 1.027 2.846 0.000
H7 -2.089 -1.027 0.000
H8 1.045 -1.263 0.000
H9 -0.989 1.069 0.000
H10 2.138 1.050 0.000
H11 0.052 3.332 0.000
H12 1.896 3.500 0.000

Atom - Atom Distances (Å)
  C1 O2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12
C11.22251.47492.45833.83684.92471.11252.19392.65604.19315.05415.9129
O21.22252.38433.58394.86816.04212.03042.64973.87685.04056.24646.9847
C31.47492.38431.34822.48833.71042.19431.09002.10782.72424.07514.6122
C42.45833.58391.34821.46202.46772.64942.13791.09392.18452.73013.4624
C53.83684.86812.48831.46201.34424.11142.77222.18181.09112.12842.1277
C64.92476.04213.71042.46771.34424.97114.10902.68752.11291.08941.0873
H71.11252.03042.19432.64944.11144.97113.14282.36744.70974.85646.0309
H82.19392.64971.09002.13792.77224.10903.14283.09462.55764.70084.8377
H92.65603.87682.10781.09392.18182.68752.36743.09463.12772.49063.7724
H104.19315.04052.72422.18451.09112.11294.70972.55763.12773.09252.4621
H115.05416.24644.07512.73012.12841.08944.85644.70082.49063.09251.8519
H125.91296.98474.61223.46242.12771.08736.03094.83773.77242.46211.8519

picture of Pentadienal state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 C4 121.029 C1 C3 H8 116.799
O2 C1 C3 123.967 O2 C1 H7 120.742
C3 C1 H7 115.291 C3 C4 C5 124.558
C3 C4 H9 118.965 C4 C3 H8 122.172
C4 C5 C6 123.081 C4 C5 H10 116.914
C5 C4 H9 116.477 C5 C6 H11 121.648
C5 C6 H12 121.752 C6 C5 H10 120.005
H11 C6 H12 116.599
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability