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: mPW1PW91/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at mPW1PW91/6-31+G**
 hartrees
Energy at 0K-195.264346
Energy at 298.15K-195.271887
Nuclear repulsion energy155.270118
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 mPW1PW91/6-31+G**
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 3266 3109 13.03      
2 A 3183 3030 3.77      
3 A 3172 3019 4.71      
4 A 3050 2903 19.57      
5 A 1736 1652 1.09      
6 A 1481 1409 8.46      
7 A 1452 1382 0.18      
8 A 1324 1260 0.32      
9 A 1268 1206 0.01      
10 A 1094 1041 3.26      
11 A 1033 983 13.57      
12 A 954 908 52.37      
13 A 921 877 5.77      
14 A 685 652 13.56      
15 A 374 356 0.48      
16 A 299 285 0.12      
17 A 89 85 0.03      
18 A 3266 3109 16.27      
19 A 3182 3029 8.70      
20 A 3172 3019 23.44      
21 A 3100 2950 11.35      
22 A 1722 1639 33.02      
23 A 1459 1389 4.47      
24 A 1335 1270 0.30      
25 A 1305 1242 3.73      
26 A 1179 1122 4.14      
27 A 1036 986 19.59      
28 A 982 935 3.59      
29 A 952 906 51.28      
30 A 898 855 11.03      
31 A 617 588 14.77      
32 A 454 432 3.05      
33 A 103 98 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 25071.7 cm-1
Scaled (by 0.9518) Zero Point Vibrational Energy (zpe) 23863.2 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 mPW1PW91/6-31+G**
ABC
0.67322 0.07818 0.07758

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31+G**

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.659
C2 0.000 1.247 -0.181
C3 0.000 -1.247 -0.181
C4 0.957 2.175 -0.171
C5 -0.957 -2.175 -0.171
H6 -0.883 -0.007 1.310
H7 0.883 0.007 1.310
H8 -0.854 1.369 -0.845
H9 0.854 -1.369 -0.845
H10 0.903 3.054 -0.804
H11 -0.903 -3.054 -0.804
H12 1.828 2.086 0.474
H13 -1.828 -2.086 0.474

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.50371.50372.51712.51711.09691.09692.20622.20623.50463.50462.77982.7798
C21.50372.49501.33293.55372.13932.13061.08912.83182.11354.43922.11473.8579
C31.50372.49503.55371.33292.13062.13932.83181.08914.43922.11353.85792.1147
C42.51711.33293.55374.75253.21602.62642.09403.60921.08485.58571.08685.1313
C52.51713.55371.33294.75252.62643.21603.60922.09405.58571.08485.13131.0868
H61.09692.13932.13063.21602.62641.76522.55793.08504.12683.70853.52542.4319
H71.09692.13062.13932.62643.21601.76523.08502.55793.70854.12682.43193.5254
H82.20621.08912.83182.09403.60922.55793.08503.22782.43424.42383.07343.8249
H92.20622.83181.08913.60922.09403.08502.55793.22784.42382.43423.82493.0734
H103.50462.11354.43921.08485.58574.12683.70852.43424.42386.36911.85095.9591
H113.50464.43922.11355.58571.08483.70854.12684.42382.43426.36915.95911.8509
H122.77982.11473.85791.08685.13133.52542.43193.07343.82491.85095.95915.5472
H132.77983.85792.11475.13131.08682.43193.52543.82493.07345.95911.85095.5472

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 124.976 C1 C2 H8 115.694
C1 C3 C5 124.976 C1 C3 H9 115.694
C2 C1 C3 112.120 C2 C1 H6 109.704
C2 C1 H7 109.019 C2 C4 H10 121.558
C2 C4 H12 121.510 C3 C1 H6 109.019
C3 C1 H7 109.704 C3 C5 H11 121.558
C3 C5 H13 121.510 C4 C2 H8 119.326
C5 C3 H9 119.326 H6 C1 H7 107.148
H10 C4 H12 116.932 H11 C5 H13 116.932
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.418      
2 C 0.049      
3 C 0.049      
4 C -0.478      
5 C -0.478      
6 H 0.171      
7 H 0.171      
8 H 0.159      
9 H 0.159      
10 H 0.158      
11 H 0.158      
12 H 0.149      
13 H 0.149      


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 0.144 0.144
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x 1.083 1.046 0.000
y 1.046 -0.276 0.000
z 0.000 0.000 -0.807
Traceless
 xyz
x 1.624 1.046 0.000
y 1.046 -0.415 0.000
z 0.000 0.000 -1.210
Polar
3z2-r2-2.420
x2-y21.359
xy1.046
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.111 2.881 0.000
y 2.881 11.460 0.000
z 0.000 0.000 7.010


<r2> (average value of r2) Å2
<r2> 158.810
(<r2>)1/2 12.602