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 C5H8 (1,4-Pentadiene)

using model chemistry: HF/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at HF/6-311G**
 hartrees
Energy at 0K-193.998559
Energy at 298.15K-194.006421
Nuclear repulsion energy155.968110
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/6-311G**
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 3358 3050 21.84      
2 A 3288 2987 4.08      
3 A 3272 2972 5.43      
4 A 3164 2874 30.09      
5 A 1851 1682 0.75      
6 A 1600 1454 6.10      
7 A 1563 1420 0.00      
8 A 1422 1292 0.09      
9 A 1364 1239 0.01      
10 A 1176 1068 7.01      
11 A 1124 1021 5.87      
12 A 1067 970 57.16      
13 A 980 890 3.94      
14 A 731 664 10.86      
15 A 400 363 0.54      
16 A 321 291 0.15      
17 A 96 87 0.00      
18 A 3358 3050 27.84      
19 A 3287 2986 11.34      
20 A 3272 2973 35.59      
21 A 3200 2907 19.99      
22 A 1842 1673 23.93      
23 A 1572 1428 7.62      
24 A 1441 1309 3.43      
25 A 1412 1283 6.70      
26 A 1262 1147 2.86      
27 A 1135 1031 12.64      
28 A 1066 969 54.79      
29 A 1030 936 0.99      
30 A 969 880 6.06      
31 A 670 608 12.21      
32 A 484 440 3.04      
33 A 109 99 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 26441.6 cm-1
Scaled (by 0.9085) Zero Point Vibrational Energy (zpe) 24022.2 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 HF/6-311G**
ABC
0.67576 0.07870 0.07806

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-311G**

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.664
C2 0.000 1.251 -0.179
C3 0.000 -1.251 -0.179
C4 0.947 2.167 -0.175
C5 -0.947 -2.167 -0.175
H6 -0.876 -0.003 1.308
H7 0.876 0.003 1.308
H8 -0.851 1.374 -0.832
H9 0.851 -1.374 -0.832
H10 0.889 3.039 -0.803
H11 -0.889 -3.039 -0.803
H12 1.815 2.083 0.458
H13 -1.815 -2.083 0.458

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.50831.50832.50922.50921.08721.08722.20212.20213.48923.48922.77042.7704
C21.50832.50201.31773.54682.13322.12971.07972.83572.09174.42492.09603.8490
C31.50832.50203.54681.31772.12972.13322.83571.07974.42492.09173.84902.0960
C42.50921.31773.54684.72993.19852.62432.07223.60281.07615.55551.07785.1080
C52.50923.54681.31774.72992.62433.19853.60282.07225.55551.07615.10801.0778
H61.08722.13322.12973.19852.62431.75122.54513.07264.10153.69763.50902.4352
H71.08722.12972.13322.62433.19851.75123.07262.54513.69764.10152.43523.5090
H82.20211.07972.83572.07223.60282.54513.07263.23222.40784.41283.04563.8138
H92.20212.83571.07973.60282.07223.07262.54513.23224.41282.40783.81383.0456
H103.48922.09174.42491.07615.55554.10153.69762.40784.41286.33171.83415.9271
H113.48924.42492.09175.55551.07613.69764.10154.41282.40786.33175.92711.8341
H122.77042.09603.84901.07785.10803.50902.43523.04563.81381.83415.92715.5255
H132.77043.84902.09605.10801.07782.43523.50903.81383.04565.92711.83415.5255

picture of 1,4-Pentadiene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 125.085 C1 C2 H8 115.627
C1 C3 C5 125.085 C1 C3 H9 115.627
C2 C1 C3 112.072 C2 C1 H6 109.479
C2 C1 H7 109.199 C2 C4 H10 121.477
C2 C4 H12 121.767 C3 C1 H6 109.199
C3 C1 H7 109.479 C3 C5 H11 121.477
C3 C5 H13 121.767 C4 C2 H8 119.286
C5 C3 H9 119.286 H6 C1 H7 107.296
H10 C4 H12 116.756 H11 C5 H13 116.756
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.137      
2 C -0.162      
3 C -0.162      
4 C -0.185      
5 C -0.185      
6 H 0.109      
7 H 0.109      
8 H 0.101      
9 H 0.101      
10 H 0.108      
11 H 0.108      
12 H 0.098      
13 H 0.098      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 0.104 0.104
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.929 1.024 0.000
y 1.024 -32.359 0.000
z 0.000 0.000 -32.913
Traceless
 xyz
x 1.707 1.024 0.000
y 1.024 -0.438 0.000
z 0.000 0.000 -1.269
Polar
3z2-r2-2.538
x2-y21.430
xy1.024
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.418 3.175 0.000
y 3.175 10.319 0.000
z 0.000 0.000 5.852


<r2> (average value of r2) Å2
<r2> 157.904
(<r2>)1/2 12.566