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: HF/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/Def2TZVPP
 hartrees
Energy at 0K-267.760713
Energy at 298.15K-267.766552
HF Energy-267.760713
Nuclear repulsion energy195.575368
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 HF/Def2TZVPP
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3376 3060 10.43      
2 A' 3328 3017 5.67      
3 A' 3312 3002 5.13      
4 A' 3294 2986 9.71      
5 A' 3287 2979 3.29      
6 A' 3093 2804 79.28      
7 A' 1967 1783 577.89      
8 A' 1860 1686 37.02      
9 A' 1789 1622 36.94      
10 A' 1573 1426 4.68      
11 A' 1532 1389 1.71      
12 A' 1433 1299 2.00      
13 A' 1424 1291 3.01      
14 A' 1367 1239 1.24      
15 A' 1276 1157 52.08      
16 A' 1181 1070 113.61      
17 A' 1026 930 2.40      
18 A' 646 585 19.52      
19 A' 457 414 1.12      
20 A' 416 377 5.28      
21 A' 165 149 8.42      
22 A" 1150 1043 15.26      
23 A" 1135 1029 31.44      
24 A" 1106 1003 50.83      
25 A" 1082 980 14.89      
26 A" 969 878 11.10      
27 A" 711 645 3.73      
28 A" 300 272 9.72      
29 A" 212 192 2.15      
30 A" 100 91 4.58      

Unscaled Zero Point Vibrational Energy (zpe) 22284.2 cm-1
Scaled (by 0.9064) Zero Point Vibrational Energy (zpe) 20198.4 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 HF/Def2TZVPP
ABC
0.97722 0.04544 0.04342

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.125 -1.569 0.000
O2 -1.112 -2.754 0.000
C3 0.084 -0.733 0.000
C4 0.000 0.588 0.000
C5 1.147 1.490 0.000
C6 1.031 2.804 0.000
H7 -2.073 -1.022 0.000
H8 1.027 -1.247 0.000
H9 -0.973 1.050 0.000
H10 2.122 1.037 0.000
H11 0.071 3.286 0.000
H12 1.894 3.442 0.000

Atom - Atom Distances (Å)
  C1 O2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12
C11.18501.46952.43253.81064.87551.09452.17592.62324.16284.99955.8496
O21.18502.34813.52204.80815.95681.98032.61673.80634.98266.15416.8863
C31.46952.34811.32392.46463.66182.17621.07432.07282.69914.01874.5503
C42.43253.52201.32391.45972.44422.62492.10321.07702.16882.69843.4249
C53.81064.80812.46461.45971.31884.08452.74012.16561.07502.09332.0894
C64.87555.95683.66182.44421.31884.92714.05112.66342.07681.07451.0726
H71.09451.98032.17622.62494.08454.92713.10832.34604.67294.81175.9717
H82.17592.61671.07432.10322.74014.05113.10833.04592.53254.63254.7684
H92.62323.80632.07281.07702.16562.66342.34603.04593.09502.46733.7334
H104.16284.98262.69912.16881.07502.07684.67292.53253.09503.04382.4161
H114.99956.15414.01872.69842.09331.07454.81174.63252.46733.04381.8294
H125.84966.88634.55033.42492.08941.07265.97174.76843.73342.41611.8294

picture of Pentadienal state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 C4 121.023 C1 C3 H8 116.752
O2 C1 C3 124.051 O2 C1 H7 120.574
C3 C1 H7 115.375 C3 C4 C5 124.540
C3 C4 H9 119.033 C4 C3 H8 122.225
C4 C5 C6 123.130 C4 C5 H10 116.858
C5 C4 H9 116.426 C5 C6 H11 121.678
C5 C6 H12 121.450 C6 C5 H10 120.012
H11 C6 H12 116.873
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.280      
2 O -0.403      
3 C -0.097      
4 C 0.032      
5 C -0.117      
6 C -0.100      
7 H 0.036      
8 H 0.083      
9 H 0.061      
10 H 0.076      
11 H 0.065      
12 H 0.084      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.805 4.138 0.000 4.215
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.775 -3.650 0.000
y -3.650 -44.309 0.000
z 0.000 0.000 -38.682
Traceless
 xyz
x 8.721 -3.650 0.000
y -3.650 -8.581 0.000
z 0.000 0.000 -0.140
Polar
3z2-r2-0.281
x2-y211.535
xy-3.650
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.030 2.244 0.000
y 2.244 17.012 0.000
z 0.000 0.000 5.444


<r2> (average value of r2) Å2
<r2> 239.296
(<r2>)1/2 15.469