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All results from a given calculation for C5H8 (1,2-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 C1 1A'
Energy calculated at MP2/3-21G
 hartrees
Energy at 0K-193.306658
Energy at 298.15K-193.314006
HF Energy-192.857692
Nuclear repulsion energy155.795700
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 3236 3088 4.79      
2 A 3171 3027 25.60      
3 A 3164 3020 13.98      
4 A 3163 3019 11.43      
5 A 3163 3019 12.07      
6 A 3109 2968 13.33      
7 A 3091 2950 14.74      
8 A 3076 2936 22.72      
9 A 2031 1938 9.83      
10 A 1603 1530 4.21      
11 A 1600 1527 6.13      
12 A 1588 1516 0.37      
13 A 1558 1487 1.13      
14 A 1495 1427 5.50      
15 A 1445 1379 8.34      
16 A 1370 1307 4.19      
17 A 1357 1295 0.00      
18 A 1179 1125 0.46      
19 A 1174 1120 2.06      
20 A 1114 1063 3.09      
21 A 1107 1057 0.24      
22 A 1007 961 0.52      
23 A 955 912 15.36      
24 A 940 897 64.03      
25 A 841 803 5.12      
26 A 834 796 1.03      
27 A 643 614 1.43      
28 A 543 518 6.49      
29 A 359 343 3.64      
30 A 290 276 5.62      
31 A 263 251 0.06      
32 A 148 141 0.37      
33 A 87 83 0.16      

Unscaled Zero Point Vibrational Energy (zpe) 25349.9 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 24196.4 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
0.33050 0.10729 0.08498

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.403 0.501 -0.000
C2 1.468 -1.046 0.000
C3 -0.031 1.040 0.000
C4 -1.112 0.288 -0.001
C5 -2.197 -0.459 0.000
H6 1.925 0.892 -0.883
H7 1.924 0.892 0.883
H8 0.967 -1.448 0.887
H9 2.510 -1.384 0.000
H10 0.967 -1.448 -0.886
H11 -0.136 2.125 0.002
H12 -2.669 -0.785 0.924
H13 -2.671 -0.785 -0.923

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.54831.53122.52373.72571.09821.09812.18442.18562.18442.23764.36834.3701
C21.54832.56852.90473.71202.17892.17871.09441.09521.09433.55404.24674.2487
C31.53122.56851.31712.63472.15062.15022.82283.51102.82311.09043.33793.3395
C42.52372.90471.31711.31763.21953.21992.85033.98922.84972.08002.10472.1049
C53.72573.71202.63471.31764.42694.42673.43184.79713.43203.30541.08721.0872
H61.09822.17892.15063.21954.42691.76643.08632.51082.52852.55925.21324.8922
H71.09812.17872.15023.21994.42671.76642.52822.51053.08602.55814.88995.2146
H82.18441.09442.82282.85033.43183.08632.52821.78031.77293.84253.69614.1171
H92.18561.09523.51103.98924.79712.51082.51051.78031.78034.39475.29445.2964
H102.18441.09432.82312.84973.43202.52853.08601.77291.78033.84334.11573.6985
H112.23763.55401.09042.08003.30542.55922.55813.84254.39473.84333.96603.9679
H124.36834.24673.33792.10471.08725.21324.88993.69615.29444.11573.96601.8470
H134.37014.24873.33952.10491.08724.89225.21464.11715.29643.69853.96791.8470

picture of 1,2-Pentadiene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H8 110.316 C1 C2 H9 110.361
C1 C2 H10 110.315 C1 C3 C4 124.586
C1 C3 H11 116.183 C2 C1 C3 113.032
C2 C1 H6 109.665 C2 C1 H7 109.648
C3 C1 H6 108.630 C3 C1 H7 108.602
C3 C4 C5 179.727 C4 C3 H11 119.231
C4 C5 H12 121.840 C4 C5 H13 121.861
H6 C1 H7 107.081 H8 C2 H9 108.797
H8 C2 H10 108.197 H9 C2 H10 108.799
H12 C5 H13 116.299
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at MP2/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.410     0.157
2 C -0.531     -0.330
3 C -0.275     -0.298
4 C 0.095     0.126
5 C -0.449     -0.520
6 H 0.199     0.015
7 H 0.199     0.015
8 H 0.190     0.100
9 H 0.180     0.076
10 H 0.190     0.100
11 H 0.207     0.142
12 H 0.203     0.209
13 H 0.203     0.209


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.290 -0.008 0.002 0.290
CHELPG        
AIM        
ESP 0.255 -0.025 0.002 0.257


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.765 1.938 -0.001
y 1.938 -32.086 0.001
z -0.001 0.001 -32.843
Traceless
 xyz
x 1.699 1.938 -0.001
y 1.938 -0.282 0.001
z -0.001 0.001 -1.417
Polar
3z2-r2-2.835
x2-y21.320
xy1.938
xz-0.001
yz0.001


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.604 2.212 0.001
y 2.212 6.487 0.001
z 0.001 0.001 4.930


<r2> (average value of r2) Å2
<r2> 145.426
(<r2>)1/2 12.059