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All results from a given calculation for CH2CHCH2CH3 (1-Butene)

using model chemistry: G3

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at G3
 hartrees
Energy at 0K-157.052491
Energy at 298.15K-157.046167
HF Energy-156.106083
Nuclear repulsion energy117.556720
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 HF/6-31G*
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 3403 3206 28.43 70.37 0.63 0.77
2 A 3329 3137 6.04 139.07 0.15 0.26
3 A 3312 3120 38.54 27.33 0.70 0.82
4 A 3271 3082 56.88 52.71 0.73 0.84
5 A 3264 3075 60.05 62.50 0.60 0.75
6 A 3232 3045 8.05 103.37 0.71 0.83
7 A 3202 3017 34.51 141.06 0.02 0.03
8 A 3190 3005 44.12 82.00 0.32 0.49
9 A 1878 1770 8.07 31.38 0.18 0.30
10 A 1652 1556 3.50 4.62 0.70 0.83
11 A 1642 1547 4.14 20.42 0.75 0.85
12 A 1631 1536 2.54 23.19 0.75 0.86
13 A 1595 1503 1.55 13.90 0.46 0.63
14 A 1561 1471 0.93 1.85 0.57 0.73
15 A 1485 1399 6.09 2.60 0.60 0.75
16 A 1439 1356 1.62 23.21 0.41 0.58
17 A 1410 1328 0.11 17.02 0.70 0.82
18 A 1308 1232 0.24 2.09 0.71 0.83
19 A 1202 1132 5.30 4.97 0.29 0.45
20 A 1140 1074 7.36 1.22 0.56 0.72
21 A 1098 1034 1.57 7.28 0.61 0.76
22 A 1071 1009 11.34 0.53 0.56 0.71
23 A 1070 1008 41.34 2.95 0.74 0.85
24 A 920 867 0.97 9.40 0.21 0.35
25 A 859 810 1.91 0.67 0.69 0.82
26 A 708 667 8.95 9.73 0.61 0.76
27 A 463 436 0.85 3.23 0.35 0.52
28 A 341 322 0.46 4.02 0.73 0.84
29 A 250 235 0.03 0.42 0.69 0.82
30 A 115 108 0.04 7.03 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 25519.6 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 24044.6 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
0.74262 0.13961 0.13669

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.708 -0.254 -0.300
C2 0.542 0.526 0.310
C3 -0.714 -0.289 0.359
C4 -1.845 0.015 -0.287
H5 -0.673 -1.202 0.954
H6 1.476 -0.548 -1.327
H7 2.622 0.347 -0.313
H8 1.910 -1.164 0.272
H9 0.813 0.845 1.324
H10 0.359 1.439 -0.269
H11 -1.927 0.913 -0.893
H12 -2.724 -0.618 -0.231

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12
C11.52952.50993.56252.85271.09301.09361.09392.15542.16423.86284.4473
C21.52951.49832.51262.20842.16942.17832.17501.09741.09582.77313.5025
C32.50991.49831.33721.09062.77613.46142.76762.13302.12902.11732.1203
C43.56252.51261.33722.09663.52534.47873.97523.21682.62411.08641.0848
H52.85272.20841.09062.09663.20173.85412.67172.55583.08793.07552.4402
H61.09302.16942.77613.52533.20171.77231.76793.06742.51273.72864.3420
H71.09362.17833.46144.47873.85411.77231.76872.48962.51254.62015.4328
H81.09392.17502.76763.97522.67171.76791.76872.51893.07764.51594.6937
H92.15541.09742.13303.21682.55583.06742.48962.51891.75993.52534.1312
H102.16421.09582.12902.62413.08792.51272.51253.07761.75992.42753.7067
H113.86282.77312.11731.08643.07553.72864.62014.51593.52532.42751.8486
H124.44733.50252.12031.08482.44024.34205.43284.69374.13123.70671.8486

picture of 1-Butene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 112.489 C1 C2 H9 108.936
C1 C2 H10 109.833 C2 C1 H6 110.899
C2 C1 H7 110.950 C2 C1 H8 111.146
C2 C3 C4 125.394 C2 C3 H5 115.701
C3 C2 H9 109.110 C3 C2 H10 109.581
C3 C4 H11 121.834 C3 C4 H12 121.706
C4 C3 H5 118.903 H6 C1 H7 108.155
H6 C1 H8 107.797 H7 C1 H8 107.753
H9 C2 H10 106.720 H11 C4 H12 116.460
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability