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All results from a given calculation for C5H8 (1,2-Pentadiene)

using model chemistry: BLYP/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 BLYP/3-21G*
 hartrees
Energy at 0K-194.110129
Energy at 298.15K-194.117292
Nuclear repulsion energy155.072002
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 BLYP/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 3104 3083 7.97      
2 A 3048 3028 31.20      
3 A 3044 3024 10.67      
4 A 3043 3023 26.61      
5 A 3038 3018 13.88      
6 A 2983 2963 19.63      
7 A 2966 2947 17.96      
8 A 2947 2928 30.40      
9 A 2004 1990 18.64      
10 A 1533 1523 4.79      
11 A 1527 1517 6.54      
12 A 1508 1498 0.08      
13 A 1488 1479 3.08      
14 A 1425 1416 5.46      
15 A 1383 1374 11.34      
16 A 1305 1297 5.54      
17 A 1296 1287 0.00      
18 A 1143 1136 0.41      
19 A 1107 1100 1.82      
20 A 1069 1062 3.23      
21 A 1039 1032 0.32      
22 A 976 970 0.64      
23 A 887 881 14.60      
24 A 859 854 64.18      
25 A 803 798 1.68      
26 A 797 791 5.24      
27 A 620 616 1.12      
28 A 509 505 6.26      
29 A 350 347 3.45      
30 A 312 310 5.54      
31 A 237 235 0.09      
32 A 148 147 0.25      
33 A 87 87 0.21      

Unscaled Zero Point Vibrational Energy (zpe) 24290.2 cm-1
Scaled (by 0.9935) Zero Point Vibrational Energy (zpe) 24132.3 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 BLYP/3-21G*
ABC
0.33137 0.10517 0.08375

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.396 0.512 0.001
C2 1.511 -1.036 -0.001
C3 -0.050 1.031 -0.001
C4 -1.129 0.277 -0.001
C5 -2.211 -0.470 0.001
H6 1.915 0.926 -0.884
H7 1.912 0.924 0.890
H8 1.020 -1.460 0.890
H9 2.570 -1.341 0.001
H10 1.023 -1.458 -0.894
H11 -0.163 2.123 -0.002
H12 -2.687 -0.797 0.931
H13 -2.688 -0.801 -0.928

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.55191.53622.53543.73771.10701.10702.19562.19402.19542.24184.38714.3889
C21.55192.59002.94833.76442.18942.18941.10191.10241.10183.57514.30694.3065
C31.53622.59001.31562.63062.15752.15742.85393.53462.85351.09833.34083.3424
C42.53542.94831.31561.31503.23533.23382.90384.03762.90472.08352.10992.1100
C53.73773.76442.63061.31504.44494.44183.49444.85973.49753.30451.09541.0953
H61.10702.18942.15753.23534.44491.77373.10552.52062.54562.55535.23894.9167
H71.10702.18942.15743.23384.44181.77372.54552.52083.10542.55704.91055.2380
H82.19561.10192.85392.90383.49443.10552.54551.79091.78373.87793.76654.1823
H92.19401.10243.53464.03764.85972.52062.52081.79091.79094.41285.36675.3668
H102.19541.10182.85352.90473.49752.54563.10541.78371.79093.87634.18723.7687
H112.24183.57511.09832.08353.30452.55532.55703.87794.41283.87633.97113.9728
H124.38714.30693.34082.10991.09545.23894.91053.76655.36674.18723.97111.8596
H134.38894.30653.34242.11001.09534.91675.23804.18235.36683.76873.97281.8596

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 110.503 C1 C2 H9 110.347
C1 C2 H10 110.490 C1 C3 C4 125.324
C1 C3 H11 115.619 C2 C1 C3 113.997
C2 C1 H6 109.724 C2 C1 H7 109.721
C3 C1 H6 108.325 C3 C1 H7 108.314
C3 C4 C5 179.683 C4 C3 H11 119.057
C4 C5 H12 121.903 C4 C5 H13 121.920
H6 C1 H7 106.475 H8 C2 H9 108.677
H8 C2 H10 108.078 H9 C2 H10 108.679
H12 C5 H13 116.177
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.382      
2 C -0.520      
3 C -0.295      
4 C 0.189      
5 C -0.480      
6 H 0.189      
7 H 0.189      
8 H 0.185      
9 H 0.172      
10 H 0.185      
11 H 0.186      
12 H 0.190      
13 H 0.190      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.402 0.034 0.002 0.403
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.032 1.872 -0.002
y 1.872 -31.203 -0.000
z -0.002 -0.000 -32.069
Traceless
 xyz
x 1.604 1.872 -0.002
y 1.872 -0.152 -0.000
z -0.002 -0.000 -1.452
Polar
3z2-r2-2.903
x2-y21.171
xy1.872
xz-0.002
yz-0.000


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


<r2> (average value of r2) Å2
<r2> 146.901
(<r2>)1/2 12.120