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All results from a given calculation for C5H8 (1,3-Pentadiene, (Z)-)

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 CS 1A'
Energy calculated at MP2/3-21G*
 hartrees
Energy at 0K-193.324784
Energy at 298.15K-193.332196
HF Energy-192.876693
Nuclear repulsion energy154.504093
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' 3258 3100 16.19      
2 A' 3192 3037 25.23      
3 A' 3180 3025 16.55      
4 A' 3168 3014 3.48      
5 A' 3165 3010 9.03      
6 A' 3143 2990 2.68      
7 A' 3078 2928 15.97      
8 A' 1697 1614 1.68      
9 A' 1650 1570 1.36      
10 A' 1591 1514 5.82      
11 A' 1533 1458 5.14      
12 A' 1493 1420 7.14      
13 A' 1460 1389 0.82      
14 A' 1383 1316 0.40      
15 A' 1344 1279 0.83      
16 A' 1216 1157 3.06      
17 A' 1109 1055 0.54      
18 A' 972 925 7.07      
19 A' 882 839 1.02      
20 A' 634 603 4.70      
21 A' 404 384 2.57      
22 A' 233 222 0.14      
23 A" 3131 2978 18.02      
24 A" 1589 1512 6.66      
25 A" 1126 1071 0.18      
26 A" 1034 984 20.55      
27 A" 990 942 4.42      
28 A" 942 896 45.22      
29 A" 802 763 12.22      
30 A" 636 605 33.67      
31 A" 351 334 0.28      
32 A" 116 110 0.02      
33 A" 97 93 0.43      

Unscaled Zero Point Vibrational Energy (zpe) 25299.2 cm-1
Scaled (by 0.9513) Zero Point Vibrational Energy (zpe) 24067.1 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 MP2/3-21G*
ABC
0.51902 0.08702 0.07558

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.407 0.142 0.000
C2 1.108 -0.222 0.000
C3 0.000 0.750 0.000
C4 -1.322 0.467 0.000
C5 -1.965 -0.910 0.000
H6 2.706 1.188 0.000
H7 3.209 -0.590 0.000
H8 0.857 -1.281 0.000
H9 0.302 1.799 0.000
H10 -2.024 1.301 0.000
H11 -1.218 -1.709 0.000
H12 -2.600 -1.035 0.886
H13 -2.600 -1.035 -0.886

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.34932.48323.74384.49741.08791.08552.10432.67994.58064.07045.22005.2200
C21.34931.47432.52623.14942.13102.13291.08842.17643.48282.76063.89853.8985
C32.48321.47431.35212.57292.74103.47772.20491.09152.09762.74423.27643.2764
C43.74382.52621.35211.52064.09194.65292.79412.10021.08962.17872.16262.1626
C54.49743.14942.57291.52065.12075.18412.84663.53292.21201.09341.09711.0971
H61.08792.13102.74104.09195.12071.84803.08452.48064.73124.87725.82095.8209
H71.08552.13293.47774.65295.18411.84802.45123.76335.56434.56625.89345.8934
H82.10431.08842.20492.79412.84663.08452.45123.13023.86892.11883.57773.5777
H92.67992.17641.09152.10023.53292.48063.76333.13022.37863.82314.15234.1523
H104.58063.48282.09761.08962.21204.73125.56433.86892.37863.11562.56392.5639
H114.07042.76062.74422.17871.09344.87724.56622.11883.82313.11561.77451.7745
H125.22003.89853.27642.16261.09715.82095.89343.57774.15232.56391.77451.7714
H135.22003.89853.27642.16261.09715.82095.89343.57774.15232.56391.77451.7714

picture of 1,3-Pentadiene, (Z)- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 123.083 C1 C2 H8 118.974
C2 C1 H6 121.565 C2 C1 H7 121.954
C2 C3 C4 126.654 C2 C3 H9 115.225
C3 C2 H8 117.942 C3 C4 C5 127.093
C3 C4 H10 118.034 C4 C3 H9 118.121
C4 C5 H11 111.878 C4 C5 H12 110.365
C4 C5 H13 110.365 C5 C4 H10 114.873
H6 C1 H7 116.482 H11 C5 H12 108.213
H11 C5 H13 108.213 H12 C5 H13 107.675
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability