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: CCSD(T)=FULL/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CCSD(T)=FULL/aug-cc-pVDZ
 hartrees
Energy at 0K-268.658933
Energy at 298.15K 
HF Energy-267.683743
Nuclear repulsion energy191.642864
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 CCSD(T)=FULL/aug-cc-pVDZ
Rotational Constants (cm-1) from geometry optimized at CCSD(T)=FULL/aug-cc-pVDZ
ABC
0.93581 0.04385 0.04189

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)=FULL/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.131 -1.590 0.000
O2 -1.125 -2.819 0.000
C3 0.090 -0.753 0.000
C4 0.000 0.609 0.000
C5 1.157 1.511 0.000
C6 1.037 2.866 0.000
H7 -2.097 -1.024 0.000
H8 1.056 -1.273 0.000
H9 -0.997 1.075 0.000
H10 2.152 1.047 0.000
H11 0.052 3.349 0.000
H12 1.918 3.517 0.000

Atom - Atom Distances (Å)
  C1 O2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12
C11.22861.48032.47303.85404.95621.11962.20992.66854.21185.07885.9481
O21.22862.39653.60764.89446.08252.04122.67323.89585.06846.27897.0286
C31.48032.39651.36482.50303.74132.20321.09732.12662.73794.10184.6449
C42.47303.60761.36481.46702.48442.65752.15791.10092.19662.74033.4835
C53.85404.89442.50301.46701.36044.12452.78602.19791.09832.14382.1454
C64.95626.08253.74132.48441.36044.99564.13942.71102.13341.09671.0947
H71.11962.04122.20322.65754.12454.99563.16262.36924.72714.87226.0610
H82.20992.67321.09732.15792.78604.13943.16263.11912.56644.72944.8670
H92.66853.89582.12661.10092.19792.71102.36923.11913.14992.50453.8029
H104.21185.06842.73792.19661.09832.13344.72712.56643.14993.11542.4808
H115.07886.27894.10182.74032.14381.09674.87224.72942.50453.11541.8728
H125.94817.02864.64493.48352.14541.09476.06104.86703.80292.48081.8728

picture of Pentadienal state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 C4 120.682 C1 C3 H8 117.264
O2 C1 C3 124.159 O2 C1 H7 120.684
C3 C1 H7 115.157 C3 C4 C5 124.190
C3 C4 H9 118.807 C4 C3 H8 122.054
C4 C5 C6 122.922 C4 C5 H10 117.071
C5 C4 H9 117.003 C5 C6 H11 121.125
C5 C6 H12 121.444 C6 C5 H10 120.007
H11 C6 H12 117.431
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability