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All results from a given calculation for CH3CHCHCH3 (2-Butene, (Z)-)

using model chemistry: B3PW91/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/6-31G*
 hartrees
Energy at 0K-157.165688
Energy at 298.15K-157.173392
Nuclear repulsion energy117.362381
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 B3PW91/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A 3172 3035 65.74      
2 A 3150 3014 7.00      
3 A 3045 2913 13.47      
4 A 1764 1688 3.50      
5 A 1521 1455 6.35      
6 A 1441 1378 4.71      
7 A 1305 1248 0.08      
8 A 1035 990 0.75      
9 A 884 846 0.58      
10 A 288 276 0.00      
11 A 3095 2961 0.00      
12 A 1505 1440 0.00      
13 A 1065 1019 0.00      
14 A 1010 966 0.00      
15 A 395 378 0.00      
16 A 145 139 0.00      
17 A 3095 2961 47.77      
18 A 1510 1445 12.33      
19 A 1074 1028 0.82      
20 A 699 669 38.20      
21 A 129 123 1.03      
22 A 3153 3016 22.02      
23 A 3136 3000 1.54      
24 A 3042 2911 45.55      
25 A 1513 1447 3.39      
26 A 1458 1395 8.14      
27 A 1405 1345 3.18      
28 A 1168 1117 1.10      
29 A 997 954 15.61      
30 A 569 544 7.68      

Unscaled Zero Point Vibrational Energy (zpe) 23882.6 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 22848.5 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 B3PW91/6-31G*
ABC
0.54600 0.16883 0.13542

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.669 0.662
C2 0.000 -0.669 0.662
C3 0.000 1.589 -0.520
C4 0.000 -1.589 -0.520
H5 0.000 1.168 1.632
H6 0.000 -1.168 1.632
H7 0.000 1.057 -1.475
H8 0.000 -1.057 -1.475
H9 -0.880 2.247 -0.504
H10 0.880 2.247 -0.504
H11 0.880 -2.247 -0.504
H12 -0.880 -2.247 -0.504

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12
C11.33791.49862.54931.09102.07752.17252.74742.15032.15033.26123.2612
C21.33792.54931.49862.07751.09102.74742.17253.26123.26122.15032.1503
C31.49862.54933.17902.19353.49831.09352.81351.09841.09843.93593.9359
C42.54931.49863.17903.49832.19352.81351.09353.93593.93591.09841.0984
H51.09102.07752.19353.49832.33623.10973.82212.54982.54984.12304.1230
H62.07751.09103.49832.19352.33623.82213.10974.12304.12302.54982.5498
H72.17252.74741.09352.81353.10973.82212.11401.77011.77013.55423.5542
H82.74742.17252.81351.09353.82213.10972.11403.55423.55421.77011.7701
H92.15033.26121.09843.93592.54984.12301.77013.55421.75994.82584.4934
H102.15033.26121.09843.93592.54984.12301.77013.55421.75994.49344.8258
H113.26122.15033.93591.09844.12302.54983.55421.77014.82584.49341.7599
H123.26122.15033.93591.09844.12302.54983.55421.77014.49344.82581.7599

picture of 2-Butene, (Z)- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 127.899 C1 C2 H6 117.226
C1 C3 H7 112.959 C1 C3 H9 110.843
C1 C3 H10 110.843 C2 C1 C3 127.899
C2 C1 H5 117.226 C2 C4 H8 112.959
C2 C4 H11 110.843 C2 C4 H12 110.843
C3 C1 H5 114.876 C4 C2 H6 114.876
H7 C3 H9 107.720 H7 C3 H10 107.720
H8 C4 H11 107.720 H8 C4 H12 107.720
H9 C3 H10 106.473 H11 C4 H12 106.473
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.556     -0.165
2 H 0.178     -0.165
3 H 0.178     -0.127
4 H 0.174     -0.127
5 C -0.556     0.106
6 H 0.178     0.106
7 H 0.178     0.068
8 H 0.174     0.068
9 C -0.122     0.058
10 H 0.148     0.060
11 C -0.122     0.060
12 H 0.148     0.058


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 -0.183 0.000 0.183
CHELPG        
AIM        
ESP 0.019 0.000 -0.274 0.275


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.504 0.000 0.000
y 0.000 -24.462 0.000
z 0.000 0.000 -25.471
Traceless
 xyz
x -2.537 0.000 0.000
y 0.000 2.026 0.000
z 0.000 0.000 0.511
Polar
3z2-r21.022
x2-y2-3.042
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 99.271
(<r2>)1/2 9.963