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

using model chemistry: CCSD(T)/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at CCSD(T)/6-31G(2df,p)
 hartrees
Energy at 0K-156.843638
Energy at 298.15K-156.851580
HF Energy-156.126082
Nuclear repulsion energy116.915504
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 CCSD(T)/6-31G(2df,p)
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 3260 3260        
2 A 3175 3175        
3 A 3162 3162        
4 A 3155 3155        
5 A 3148 3148        
6 A 3106 3106        
7 A 3069 3069        
8 A 3058 3058        
9 A 1700 1700        
10 A 1529 1529        
11 A 1520 1520        
12 A 1505 1505        
13 A 1465 1465        
14 A 1427 1427        
15 A 1355 1355        
16 A 1323 1323        
17 A 1301 1301        
18 A 1208 1208        
19 A 1102 1102        
20 A 1046 1046        
21 A 1027 1027        
22 A 988 988        
23 A 933 933        
24 A 867 867        
25 A 795 795        
26 A 648 648        
27 A 429 429        
28 A 313 313        
29 A 233 233        
30 A 106 106        

Unscaled Zero Point Vibrational Energy (zpe) 23975.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 23975.7 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 CCSD(T)/6-31G(2df,p)
ABC
0.74842 0.13833 0.13501

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/6-31G(2df,p)

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.720 -0.252 -0.294
C2 0.541 0.531 0.304
C3 -0.716 -0.296 0.346
C4 -1.858 0.015 -0.280
H5 -0.661 -1.218 0.926
H6 1.503 -0.550 -1.324
H7 2.633 0.350 -0.296
H8 1.918 -1.161 0.282
H9 0.803 0.848 1.322
H10 0.361 1.442 -0.277
H11 -1.950 0.924 -0.868
H12 -2.733 -0.623 -0.223

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12
C11.53662.52003.58812.84511.09381.09381.09472.15992.17203.89694.4694
C21.53661.50562.52232.21132.17842.18422.18141.09761.09572.78153.5113
C32.52001.50561.33881.09012.78963.47162.77342.13732.13762.11832.1209
C43.58812.52231.33882.09933.56474.50373.99453.21502.63751.08651.0847
H52.84512.21131.09012.09933.19293.84822.65892.56273.09283.07722.4429
H61.09382.17842.78963.56473.19291.77321.76773.07372.52393.78284.3777
H71.09382.18423.47164.50373.84821.77321.76962.49382.52134.65475.4545
H81.09472.18142.77343.99452.65891.76771.76962.52253.08434.54264.7092
H92.15991.09762.13733.21502.56273.07372.49382.52251.76183.51844.1292
H102.17201.09572.13762.63753.09282.52392.52133.08431.76182.44093.7198
H113.89692.78152.11831.08653.07723.78284.65474.54263.51842.44091.8498
H124.46943.51132.12091.08472.44294.37775.45454.70924.12923.71981.8498

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 111.850 C1 C2 H9 109.018
C1 C2 H10 110.074 C2 C1 H6 110.694
C2 C1 H7 111.156 C2 C1 H8 110.878
C2 C3 C4 124.827 C2 C3 H5 115.913
C3 C2 H9 109.368 C3 C2 H10 109.512
C3 C4 H11 121.372 C3 C4 H12 121.771
C4 C3 H5 119.255 H6 C1 H7 108.310
H6 C1 H8 107.755 H7 C1 H8 107.920
H9 C2 H10 106.887 H11 C4 H12 116.857
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability