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: QCISD(T)=FULL/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)=FULL/6-31G*
 hartrees
Energy at 0K-268.556688
Energy at 298.15K-268.562112
HF Energy-267.647000
Nuclear repulsion energy192.692189
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)=FULL/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' 3248 3248        
2 A' 3183 3183        
3 A' 3167 3167        
4 A' 3157 3157        
5 A' 3136 3136        
6 A' 2918 2918        
7 A' 1768 1768        
8 A' 1713 1713        
9 A' 1655 1655        
10 A' 1478 1478        
11 A' 1433 1433        
12 A' 1342 1342        
13 A' 1332 1332        
14 A' 1285 1285        
15 A' 1213 1213        
16 A' 1140 1140        
17 A' 975 975        
18 A' 603 603        
19 A' 432 432        
20 A' 384 384        
21 A' 150 150        
22 A" 1026 1026        
23 A" 1003 1003        
24 A" 972 972        
25 A" 918 918        
26 A" 842 842        
27 A" 636 636        
28 A" 271 271        
29 A" 195 195        
30 A" 92 92        

Unscaled Zero Point Vibrational Energy (zpe) 20833.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 20833.0 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)=FULL/6-31G*
ABC
0.94893 0.04432 0.04234

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.125 -1.583 0.000
O2 -1.110 -2.809 0.000
C3 0.086 -0.746 0.000
C4 0.000 0.605 0.000
C5 1.147 1.506 0.000
C6 1.029 2.850 0.000
H7 -2.090 -1.024 0.000
H8 1.046 -1.265 0.000
H9 -0.991 1.073 0.000
H10 2.138 1.046 0.000
H11 0.054 3.338 0.000
H12 1.901 3.502 0.000

Atom - Atom Distances (Å)
  C1 O2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12
C11.22621.47202.46043.83424.92841.11472.19422.65894.18965.05995.9166
O21.22622.38443.58994.86906.04942.03632.65123.88345.03986.25596.9917
C31.47202.38441.35382.48903.71732.19311.09182.11312.72374.08394.6189
C42.46043.58991.35381.45812.46922.64962.14331.09532.18252.73323.4643
C53.83424.86902.48901.45811.34934.10772.77312.18091.09262.13362.1334
C64.92846.04943.71732.46921.34934.97314.11542.69022.11791.09071.0885
H71.11472.03632.19312.64964.10774.97313.14492.36714.70654.85996.0335
H82.19422.65121.09182.14332.77314.11543.14493.10082.55574.70924.8430
H92.65893.88342.11311.09532.18092.69022.36713.10083.12842.49433.7762
H104.18965.03982.72372.18251.09262.11794.70652.55573.12843.09832.4675
H115.05996.25594.08392.73322.13361.09074.85994.70922.49433.09831.8546
H125.91666.99174.61893.46432.13341.08856.03354.84303.77622.46751.8546

picture of Pentadienal state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 C4 121.021 C1 C3 H8 116.924
O2 C1 C3 123.928 O2 C1 H7 120.817
C3 C1 H7 115.255 C3 C4 C5 124.505
C3 C4 H9 118.892 C4 C3 H8 122.055
C4 C5 C6 123.125 C4 C5 H10 116.940
C5 C4 H9 116.602 C5 C6 H11 121.596
C5 C6 H12 121.756 C6 C5 H10 119.935
H11 C6 H12 116.648
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability