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All results from a given calculation for C5H10 (2-Butene, 2-methyl-)

using model chemistry: B1B95/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B1B95/3-21G
 hartrees
Energy at 0K-195.346563
Energy at 298.15K-195.356473
Nuclear repulsion energy174.435216
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 B1B95/3-21G
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 3177 3040 37.39      
2 A 3163 3026 17.78      
3 A 3148 3011 7.05      
4 A 3141 3005 13.81      
5 A 3055 2923 8.79      
6 A 3051 2919 47.06      
7 A 3043 2912 20.85      
8 A 1768 1692 0.77      
9 A 1564 1496 14.06      
10 A 1552 1485 5.84      
11 A 1540 1473 2.55      
12 A 1470 1406 5.57      
13 A 1453 1390 6.52      
14 A 1441 1379 9.34      
15 A 1410 1349 2.85      
16 A 1247 1193 5.65      
17 A 1150 1100 10.63      
18 A 1094 1047 10.83      
19 A 993 950 2.04      
20 A 971 928 2.96      
21 A 774 740 2.26      
22 A 532 509 2.70      
23 A 381 365 0.42      
24 A 318 305 0.29      
25 A 3102 2967 49.12      
26 A 3101 2966 3.97      
27 A 3097 2963 7.14      
28 A 1554 1487 28.13      
29 A 1549 1482 0.96      
30 A 1533 1467 1.64      
31 A 1136 1087 3.38      
32 A 1097 1049 0.01      
33 A 1049 1003 2.71      
34 A 846 810 18.72      
35 A 443 424 4.38      
36 A 261 250 2.32      
37 A 186 178 1.60      
38 A 161 154 0.07      
39 A 124 119 1.10      

Unscaled Zero Point Vibrational Energy (zpe) 30336.9 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 29023.3 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 B1B95/3-21G
ABC
0.26921 0.11745 0.08570

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.509 0.464 0.000
H2 -1.943 -0.537 0.000
H3 -1.877 1.000 0.883
H4 -1.877 1.000 -0.883
C5 0.290 -2.086 0.000
H6 0.670 -2.614 -0.882
H7 0.670 -2.614 0.882
H8 -0.798 -2.168 0.000
C9 0.755 -0.656 0.000
H10 1.837 -0.527 0.000
C11 0.000 0.445 0.000
C12 0.627 1.821 0.000
H13 1.718 1.760 0.000
H14 0.309 2.387 0.884
H15 0.309 2.387 -0.884

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 H8 C9 H10 C11 C12 H13 H14 H15
C11.09061.09691.09693.12033.87323.87322.72632.52593.48891.50872.52983.47752.79002.7900
H21.09061.77331.77332.71763.45303.45301.99312.70083.77942.17683.48684.32183.79483.7948
H31.09691.77331.76663.87274.76124.42163.46123.23314.11142.14742.77913.77962.58933.1348
H41.09691.77331.76663.87274.42164.76123.46123.23314.11142.14742.77913.77963.13482.5893
C53.12032.71763.87273.87271.09661.09661.09121.50352.19602.54783.92094.10284.55984.5598
H63.87323.45304.76124.42161.09661.76481.77032.14952.54883.25424.52214.58425.31675.0148
H73.87323.45304.42164.76121.09661.76481.77032.14952.54883.25424.52214.58425.01485.3167
H82.72631.99313.46123.46121.09121.77031.77032.16783.10422.73274.23564.66534.77074.7707
C92.52592.70083.23313.23311.50352.14952.14952.16781.08891.33582.48012.60133.20063.2006
H103.48893.77944.11144.11142.19602.54882.54883.10421.08892.07822.64092.29033.40713.4071
C111.50872.17682.14742.14742.54783.25423.25422.73271.33582.07821.51122.16362.15592.1559
C122.52983.48682.77912.77913.92094.52214.52214.23562.48012.64091.51121.09321.09701.0970
H133.47754.32183.77963.77964.10284.58424.58424.66532.60132.29032.16361.09321.77781.7778
H142.79003.79482.58933.13484.55985.31675.01484.77073.20063.40712.15591.09701.77781.7674
H152.79003.79483.13482.58934.55985.01485.31674.77073.20063.40712.15591.09701.77781.7674

picture of 2-Butene, 2-methyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C11 C9 125.142 C1 C11 C12 113.799
H2 C1 H3 108.324 H2 C1 H4 108.324
H2 C1 C11 112.756 H3 C1 H4 107.271
H3 C1 C11 109.997 H4 C1 C11 109.997
C5 C9 H10 114.852 C5 C9 C11 127.527
H6 C5 H7 107.158 H6 C5 H8 108.023
H6 C5 C9 110.544 H7 C5 H8 108.023
H7 C5 C9 110.544 H8 C5 C9 112.359
C9 C11 C12 121.059 H10 C9 C11 117.620
C11 C12 H13 111.342 C11 C12 H14 110.492
C11 C12 H15 110.492 H13 C12 H14 108.529
H13 C12 H15 108.529 H14 C12 H15 107.338
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.640      
2 H 0.215      
3 H 0.215      
4 H 0.215      
5 C -0.656      
6 H 0.217      
7 H 0.217      
8 H 0.213      
9 C -0.188      
10 H 0.190      
11 C -0.007      
12 C -0.622      
13 H 0.209      
14 H 0.212      
15 H 0.212      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.191 0.071 0.000 0.204
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.719 -0.334 0.000
y -0.334 -31.279 0.000
z 0.000 0.000 -34.408
Traceless
 xyz
x 1.124 -0.334 0.000
y -0.334 1.785 0.000
z 0.000 0.000 -2.909
Polar
3z2-r2-5.818
x2-y2-0.440
xy-0.334
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.697 -1.095 0.000
y -1.095 9.765 0.000
z 0.000 0.000 5.244


<r2> (average value of r2) Å2
<r2> 150.263
(<r2>)1/2 12.258