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 (2,3-Pentadiene)

using model chemistry: BLYP/aug-cc-pVDZ

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/aug-cc-pVDZ
 hartrees
Energy at 0K-195.199680
Energy at 298.15K-195.206525
Nuclear repulsion energy150.510299
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/aug-cc-pVDZ
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 3046 3040 17.68      
2 A 3027 3021 2.86      
3 A 2989 2983 21.46      
4 A 2943 2938 8.42      
5 A 1450 1447 3.81      
6 A 1415 1413 4.72      
7 A 1387 1384 0.02      
8 A 1340 1338 1.72      
9 A 1134 1132 0.00      
10 A 1047 1045 2.16      
11 A 1010 1008 0.36      
12 A 863 861 21.39      
13 A 795 793 0.02      
14 A 500 499 5.47      
15 A 284 283 0.81      
16 A 169 169 0.00      
17 A 130 129 2.33      
18 A 3046 3040 39.05      
19 A 3025 3019 4.56      
20 A 2989 2983 21.28      
21 A 2942 2937 86.11      
22 A 1984 1980 10.86      
23 A 1425 1423 8.84      
24 A 1415 1412 5.26      
25 A 1337 1334 5.55      
26 A 1272 1270 23.33      
27 A 1053 1051 2.10      
28 A 1007 1005 1.26      
29 A 928 927 15.03      
30 A 680 678 15.99      
31 A 535 534 13.54      
32 A 207 207 1.11      
33 A 153 153 1.72      

Unscaled Zero Point Vibrational Energy (zpe) 23762.2 cm-1
Scaled (by 0.9981) Zero Point Vibrational Energy (zpe) 23717.1 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/aug-cc-pVDZ
ABC
0.57360 0.07239 0.07006

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/aug-cc-pVDZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.411
C2 0.000 1.323 0.412
C3 0.000 -1.323 0.412
C4 -0.878 2.206 -0.460
C5 0.878 -2.206 -0.460
H6 0.686 1.845 1.100
H7 -0.686 -1.845 1.100
H8 -1.518 2.860 0.164
H9 -0.258 2.871 -1.094
H10 -1.529 1.604 -1.117
H11 1.518 -2.860 0.164
H12 0.258 -2.871 -1.094
H13 1.529 -1.604 -1.117

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.32251.32252.52902.52902.08582.08583.24763.25192.69083.24763.25192.6908
C21.32252.64501.52083.73961.10323.31312.17522.17602.18044.45674.46383.6383
C31.32252.64503.73961.52083.31311.10324.45674.46383.63832.17522.17602.1804
C42.52901.52083.73964.74902.23874.34551.10811.10811.10375.63925.24174.5538
C52.52903.73961.52084.74904.34552.23875.63925.24174.55381.10811.10811.1037
H62.08581.10323.31312.23874.34553.93702.60152.60003.14314.86895.21934.1852
H72.08583.31311.10324.34552.23873.93704.86895.21934.18522.60152.60003.1431
H83.24762.17524.45671.10815.63922.60154.86891.78071.79466.47656.13125.5543
H93.25192.17604.46381.10815.24172.60005.21931.78071.79496.13125.76614.8187
H102.69082.18043.63831.10374.55383.14314.18521.79461.79495.55434.81874.4309
H113.24764.45672.17525.63921.10814.86892.60156.47656.13125.55431.78071.7946
H123.25194.46382.17605.24171.10815.21932.60006.13125.76614.81871.78071.7949
H132.69083.63832.18044.55381.10374.18523.14315.55434.81874.43091.79461.7949

picture of 2,3-Pentadiene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 125.470 C1 C2 H6 118.324
C1 C3 C5 125.470 C1 C3 H7 118.324
C2 C1 C3 179.828 C2 C4 H8 110.687
C2 C4 H9 110.753 C2 C4 H10 111.369
C3 C5 H11 110.687 C3 C5 H12 110.753
C3 C5 H13 111.369 C4 C2 H6 116.206
C5 C3 H7 116.206 H8 C4 H9 106.931
H8 C4 H10 108.459 H9 C4 H10 108.496
H11 C5 H12 106.931 H11 C5 H13 108.459
H12 C5 H13 108.496
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.698      
2 C 1.280      
3 C 1.280      
4 C 0.845      
5 C 0.845      
6 H -0.798      
7 H -0.798      
8 H -0.269      
9 H -0.261      
10 H -0.449      
11 H -0.269      
12 H -0.261      
13 H -0.449      


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 -0.229 0.229
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.074 -0.191 0.000
y -0.191 -29.091 0.000
z 0.000 0.000 -33.261
Traceless
 xyz
x -1.898 -0.191 0.000
y -0.191 4.076 0.000
z 0.000 0.000 -2.178
Polar
3z2-r2-4.357
x2-y2-3.983
xy-0.191
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.365 -1.370 0.000
y -1.370 16.034 0.000
z 0.000 0.000 8.200


<r2> (average value of r2) Å2
<r2> 176.631
(<r2>)1/2 13.290