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 (1,3-Pentadiene, (Z)-)

using model chemistry: MP2/LANL2DZ

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/LANL2DZ
 hartrees
Energy at 0K-194.323703
Energy at 298.15K-194.330916
HF Energy-193.896676
Nuclear repulsion energy152.635354
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/LANL2DZ
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' 3251 3131 32.95      
2 A' 3172 3055 52.82      
3 A' 3163 3047 24.62      
4 A' 3138 3022 4.60      
5 A' 3135 3020 27.82      
6 A' 3125 3009 2.18      
7 A' 3017 2906 33.43      
8 A' 1682 1620 3.83      
9 A' 1617 1557 4.14      
10 A' 1538 1481 9.47      
11 A' 1494 1439 8.03      
12 A' 1465 1411 8.44      
13 A' 1411 1359 0.22      
14 A' 1339 1290 0.42      
15 A' 1310 1262 1.47      
16 A' 1198 1154 2.71      
17 A' 1075 1036 0.25      
18 A' 969 934 9.76      
19 A' 880 847 0.87      
20 A' 614 591 4.30      
21 A' 384 369 2.29      
22 A' 222 214 0.12      
23 A" 3097 2983 32.18      
24 A" 1524 1468 9.26      
25 A" 1090 1050 1.30      
26 A" 991 954 39.22      
27 A" 919 885 4.15      
28 A" 853 822 47.96      
29 A" 766 738 19.90      
30 A" 606 583 37.91      
31 A" 338 326 0.47      
32 A" 108 104 0.00      
33 A" 90 87 0.63      

Unscaled Zero Point Vibrational Energy (zpe) 24788.6 cm-1
Scaled (by 0.9631) Zero Point Vibrational Energy (zpe) 23873.9 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/LANL2DZ
ABC
0.50939 0.08462 0.07358

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/LANL2DZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.444 0.148 0.000
C2 1.121 -0.220 0.000
C3 0.000 0.759 0.000
C4 -1.345 0.467 0.000
C5 -1.989 -0.923 0.000
H6 2.745 1.202 0.000
H7 3.246 -0.596 0.000
H8 0.875 -1.289 0.000
H9 0.297 1.817 0.000
H10 -2.047 1.312 0.000
H11 -1.241 -1.732 0.000
H12 -2.632 -1.051 0.891
H13 -2.632 -1.051 -0.891

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.37342.51943.80234.56101.09571.09362.12802.71984.63954.13735.29135.2913
C21.37341.48862.55993.18882.15862.15761.09662.19823.51922.80463.94573.9457
C32.51941.48861.37592.60492.78073.51722.22681.09932.12032.78303.31593.3159
C43.80232.55991.37591.53224.15534.71202.83012.12551.09862.20162.18052.1805
C54.56103.18882.60491.53225.18935.24542.88733.56862.23571.10201.10621.1062
H61.09572.15862.78074.15535.18931.86583.11482.52454.79334.94955.89745.8974
H71.09362.15763.51724.71205.24541.86582.47053.81055.62614.62885.96235.9623
H82.12801.09662.22682.83012.88733.11482.47053.15953.91162.16183.62583.6258
H92.71982.19821.09932.12553.56862.52453.81053.15952.39763.86834.19484.1948
H104.63953.51922.12031.09862.23574.79335.62613.91162.39763.14892.59212.5921
H114.13732.80462.78302.20161.10204.94954.62882.16183.86833.14891.78681.7868
H125.29133.94573.31592.18051.10625.89745.96233.62584.19482.59211.78681.7827
H135.29133.94573.31592.18051.10625.89745.96233.62584.19482.59211.78681.7827

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 123.302 C1 C2 H8 118.555
C2 C1 H6 121.506 C2 C1 H7 121.582
C2 C3 C4 126.625 C2 C3 H9 115.466
C3 C2 H8 118.143 C3 C4 C5 127.121
C3 C4 H10 117.487 C4 C3 H9 117.908
C4 C5 H11 112.366 C4 C5 H12 110.436
C4 C5 H13 110.436 C5 C4 H10 115.392
H6 C1 H7 116.913 H11 C5 H12 108.028
H11 C5 H13 108.028 H12 C5 H13 107.372
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability