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All results from a given calculation for C5H8 (1,2-Butadiene, 3-methyl-)

using model chemistry: B3LYP/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3LYP/aug-cc-pVTZ
 hartrees
Energy at 0K-195.371781
Energy at 298.15K-195.378904
HF Energy-195.371781
Nuclear repulsion energy157.553730
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 B3LYP/aug-cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3116 3015 15.41      
2 A1 3106 3005 10.17      
3 A1 3014 2916 63.79      
4 A1 2046 1980 36.82      
5 A1 1515 1466 0.72      
6 A1 1475 1427 6.82      
7 A1 1415 1369 1.70      
8 A1 1316 1273 21.27      
9 A1 1027 994 5.13      
10 A1 734 710 0.05      
11 A1 342 331 0.12      
12 A2 3053 2954 0.00      
13 A2 1476 1428 0.00      
14 A2 1006 973 0.00      
15 A2 615 595 0.00      
16 A2 164 158 0.00      
17 B1 3173 3069 4.14      
18 B1 3054 2955 42.27      
19 B1 1492 1443 14.64      
20 B1 1100 1065 0.05      
21 B1 1029 996 1.54      
22 B1 464 449 0.17      
23 B1 261 252 6.11      
24 B1 181 175 1.22      
25 B2 3115 3014 17.11      
26 B2 3010 2912 17.93      
27 B2 1483 1435 6.42      
28 B2 1399 1354 4.19      
29 B2 1203 1164 6.10      
30 B2 969 937 0.00      
31 B2 882 853 47.44      
32 B2 606 587 13.05      
33 B2 185 179 0.68      

Unscaled Zero Point Vibrational Energy (zpe) 24512.0 cm-1
Scaled (by 0.9675) Zero Point Vibrational Energy (zpe) 23715.4 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 B3LYP/aug-cc-pVTZ
ABC
0.27643 0.12123 0.08856

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/aug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 2.233
C2 0.000 0.000 0.930
H3 -0.924 0.000 2.800
H4 0.924 0.000 2.800
C5 0.000 0.000 -0.374
C6 0.000 1.285 -1.169
C7 0.000 -1.285 -1.169
H8 0.000 2.158 -0.521
H9 0.000 -2.158 -0.521
H10 0.879 1.333 -1.816
H11 -0.879 1.333 -1.816
H12 -0.879 -1.333 -1.816
H13 0.879 -1.333 -1.816

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 C7 H8 H9 H10 H11 H12 H13
C11.30321.08431.08432.60733.63693.63693.49883.49884.35334.35334.35334.3533
C21.30322.08632.08631.30412.46122.46122.60042.60043.17723.17723.17723.1772
H31.08432.08631.84833.30634.27354.27354.06714.06715.13294.80594.80595.1329
H41.08432.08631.84833.30634.27354.27354.06714.06714.80595.13295.13294.8059
C52.60731.30413.30633.30631.51111.51112.16322.16322.15222.15222.15222.1522
C63.63692.46124.27354.27351.51112.57001.08763.50381.09301.09302.83702.8370
C73.63692.46124.27354.27351.51112.57003.50381.08762.83702.83701.09301.0930
H83.49882.60044.06714.06712.16321.08763.50384.31641.76991.76993.82683.8268
H93.49882.60044.06714.06712.16323.50381.08764.31643.82683.82681.76991.7699
H104.35333.17725.13294.80592.15221.09302.83701.76993.82681.75873.19462.6670
H114.35333.17724.80595.13292.15221.09302.83701.76993.82681.75872.66703.1946
H124.35333.17724.80595.13292.15222.83701.09303.82681.76993.19462.66701.7587
H134.35333.17725.13294.80592.15222.83701.09303.82681.76992.66703.19461.7587

picture of 1,2-Butadiene, 3-methyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C5 180.000 C2 C1 H3 121.542
C2 C1 H4 121.542 C2 C5 C6 121.745
C2 C5 C7 121.745 H3 C1 H4 116.917
C5 C6 H8 111.655 C5 C6 H10 110.446
C5 C6 H11 110.446 C5 C7 H9 111.655
C5 C7 H12 110.446 C5 C7 H13 110.446
C6 C5 C7 116.509 H8 C6 H10 108.513
H8 C6 H11 108.513 H9 C7 H12 108.513
H9 C7 H13 108.513 H10 C6 H11 107.129
H12 C7 H13 107.129
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability