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All results from a given calculation for C5H8 (1,4-Pentadiene)

using model chemistry: MP2/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at MP2/3-21G
 hartrees
Energy at 0K-193.318263
Energy at 298.15K-193.325840
HF Energy-192.870275
Nuclear repulsion energy154.368312
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 MP2/3-21G
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 3256 3108 15.56      
2 A 3180 3035 3.13      
3 A 3166 3022 3.43      
4 A 3059 2919 17.34      
5 A 1696 1618 0.08      
6 A 1562 1491 7.47      
7 A 1533 1464 0.03      
8 A 1374 1312 0.00      
9 A 1315 1255 0.00      
10 A 1125 1074 0.34      
11 A 1047 999 17.54      
12 A 964 920 43.06      
13 A 929 887 5.64      
14 A 684 653 8.48      
15 A 382 364 0.30      
16 A 313 298 0.49      
17 A 84 80 0.04      
18 A 3256 3108 20.15      
19 A 3179 3035 8.44      
20 A 3167 3023 21.16      
21 A 3107 2966 10.34      
22 A 1682 1605 8.39      
23 A 1524 1455 1.87      
24 A 1376 1314 0.58      
25 A 1361 1300 1.67      
26 A 1201 1146 2.79      
27 A 1047 1000 18.28      
28 A 965 921 28.63      
29 A 962 918 13.99      
30 A 925 883 6.69      
31 A 616 588 14.21      
32 A 463 442 1.80      
33 A 88 84 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 25292.2 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 24141.4 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 MP2/3-21G
ABC
0.62576 0.07839 0.07769

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.706
C2 0.000 1.252 -0.166
C3 0.000 -1.252 -0.166
C4 0.998 2.148 -0.206
C5 -0.998 -2.148 -0.206
H6 -0.889 -0.010 1.352
H7 0.889 0.010 1.352
H8 -0.876 1.379 -0.801
H9 0.876 -1.379 -0.801
H10 0.964 3.018 -0.854
H11 -0.964 -3.018 -0.854
H12 1.885 2.041 0.415
H13 -1.885 -2.041 0.415

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.52521.52522.53802.53801.09921.09922.22232.22233.53173.53172.79352.7935
C21.52522.50371.34223.54382.16452.15321.08952.84462.12704.43152.12443.8384
C31.52522.50373.54381.34222.15322.16452.84461.08954.43152.12703.83842.1244
C42.53801.34223.54384.73753.26252.64772.11173.57901.08585.56461.08765.1232
C52.53803.54381.34224.73752.64773.26253.57902.11175.56461.08585.12321.0876
H61.09922.16452.15323.26252.64771.77862.56173.10244.17973.73143.57482.4486
H71.09922.15322.16452.64773.26251.77863.10242.56173.73144.17972.44863.5748
H82.22231.08952.84462.11173.57902.56173.10243.26732.46514.39853.08873.7672
H92.22232.84461.08953.57902.11173.10242.56173.26734.39852.46513.76723.0887
H103.53172.12704.43151.08585.56464.17973.73142.46514.39856.33721.84765.9435
H113.53174.43152.12705.56461.08583.73144.17974.39852.46516.33725.94351.8476
H122.79352.12443.83841.08765.12323.57482.44863.08873.76721.84765.94355.5566
H132.79353.83842.12445.12321.08762.44863.57483.76723.08875.94351.84765.5566

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 124.406 C1 C2 H8 115.388
C1 C3 C5 124.406 C1 C3 H9 115.388
C2 C1 C3 110.322 C2 C1 H6 110.061
C2 C1 H7 109.182 C2 C4 H10 121.975
C2 C4 H12 121.581 C3 C1 H6 109.182
C3 C1 H7 110.061 C3 C5 H11 121.975
C3 C5 H13 121.581 C4 C2 H8 120.189
C5 C3 H9 120.189 H6 C1 H7 107.999
H10 C4 H12 116.444 H11 C5 H13 116.444
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at MP2/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.511     -0.450
2 C -0.198     -0.443
3 C -0.198     -0.109
4 C -0.419     -0.122
5 C -0.419     0.028
6 H 0.228     0.173
7 H 0.228     0.178
8 H 0.229     0.045
9 H 0.229     0.051
10 H 0.211     0.133
11 H 0.211     0.138
12 H 0.204     0.186
13 H 0.204     0.191


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 0.014 0.014
CHELPG        
AIM        
ESP 0.012 -0.003 0.048 0.050


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.100 1.143 0.000
y 1.143 -32.469 0.000
z 0.000 0.000 -33.182
Traceless
 xyz
x 1.726 1.143 0.000
y 1.143 -0.328 0.000
z 0.000 0.000 -1.398
Polar
3z2-r2-2.795
x2-y21.369
xy1.143
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.236 2.681 0.000
y 2.681 8.364 0.000
z 0.000 0.000 4.754


<r2> (average value of r2) Å2
<r2> 159.216
(<r2>)1/2 12.618