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

using model chemistry: MP2=FULL/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2=FULL/6-31G**
 hartrees
Energy at 0K-194.664605
Energy at 298.15K-194.671724
HF Energy-193.950206
Nuclear repulsion energy157.355210
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=FULL/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3240 3028 18.93      
2 A1 3222 3010 5.79      
3 A1 3117 2912 42.12      
4 A1 2084 1948 8.65      
5 A1 1571 1468 0.00      
6 A1 1528 1427 0.85      
7 A1 1464 1368 1.68      
8 A1 1351 1262 11.90      
9 A1 1054 985 7.15      
10 A1 754 705 0.02      
11 A1 344 321 0.09      
12 A2 3196 2986 0.00      
13 A2 1535 1434 0.00      
14 A2 1035 967 0.00      
15 A2 635 593 0.00      
16 A2 168 157 0.00      
17 B1 3312 3094 4.85      
18 B1 3197 2987 41.17      
19 B1 1551 1449 12.59      
20 B1 1131 1057 0.00      
21 B1 1050 981 0.28      
22 B1 440 411 0.52      
23 B1 265 247 3.87      
24 B1 172 161 1.08      
25 B2 3239 3027 13.40      
26 B2 3115 2910 17.76      
27 B2 1548 1447 5.09      
28 B2 1448 1353 2.38      
29 B2 1264 1181 3.62      
30 B2 1000 935 0.33      
31 B2 883 825 47.07      
32 B2 604 564 7.44      
33 B2 181 169 0.16      

Unscaled Zero Point Vibrational Energy (zpe) 25347.6 cm-1
Scaled (by 0.9344) Zero Point Vibrational Energy (zpe) 23684.8 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=FULL/6-31G**
ABC
0.27763 0.12026 0.08815

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 2.245
C2 0.000 0.000 0.932
H3 -0.923 0.000 2.809
H4 0.923 0.000 2.809
C5 0.000 0.000 -0.382
C6 0.000 1.282 -1.173
C7 0.000 -1.282 -1.173
H8 0.000 2.151 -0.521
H9 0.000 -2.151 -0.521
H10 0.879 1.330 -1.817
H11 -0.879 1.330 -1.817
H12 -0.879 -1.330 -1.817
H13 0.879 -1.330 -1.817

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 C7 H8 H9 H10 H11 H12 H13
C11.31221.08161.08162.62663.65043.65043.50433.50434.36364.36364.36364.3636
C21.31222.09132.09131.31432.46512.46512.59662.59663.17843.17843.17843.1784
H31.08162.09131.84513.32184.28424.28424.07104.07105.13994.81424.81425.1399
H41.08162.09131.84513.32184.28424.28424.07104.07104.81425.13995.13994.8142
C52.62661.31433.32183.32181.50641.50642.15582.15582.14502.14502.14502.1450
C63.65042.46514.28424.28421.50642.56381.08653.49451.09061.09062.82972.8297
C73.65042.46514.28424.28421.50642.56383.49451.08652.82972.82971.09061.0906
H83.50432.59664.07104.07102.15581.08653.49454.30261.76821.76823.81693.8169
H93.50432.59664.07104.07102.15583.49451.08654.30263.81693.81691.76821.7682
H104.36363.17845.13994.81422.14501.09062.82971.76823.81691.75723.18742.6593
H114.36363.17844.81425.13992.14501.09062.82971.76823.81691.75722.65933.1874
H124.36363.17844.81425.13992.14502.82971.09063.81691.76823.18742.65931.7572
H134.36363.17845.13994.81422.14502.82971.09063.81691.76822.65933.18741.7572

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 121.465
C2 C1 H4 121.465 C2 C5 C6 121.687
C2 C5 C7 121.687 H3 C1 H4 117.071
C5 C6 H8 111.461 C5 C6 H10 110.340
C5 C6 H11 110.340 C5 C7 H9 111.461
C5 C7 H12 110.340 C5 C7 H13 110.340
C6 C5 C7 116.627 H8 C6 H10 108.621
H8 C6 H11 108.621 H9 C7 H12 108.621
H9 C7 H13 108.621 H10 C6 H11 107.341
H12 C7 H13 107.341
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability