return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: B3PW91/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/cc-pVDZ
 hartrees
Energy at 0K-196.479445
Energy at 298.15K-196.489257
Nuclear repulsion energy174.054526
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/cc-pVDZ
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 3153 3043 34.49      
2 A 3147 3037 30.56      
3 A 3134 3025 15.46      
4 A 3130 3020 3.47      
5 A 3030 2924 10.65      
6 A 3027 2921 73.13      
7 A 3020 2914 30.03      
8 A 1762 1700 1.56      
9 A 1466 1415 8.32      
10 A 1463 1412 4.48      
11 A 1447 1396 1.92      
12 A 1402 1353 5.96      
13 A 1396 1347 0.56      
14 A 1388 1340 3.16      
15 A 1344 1297 2.54      
16 A 1238 1195 4.96      
17 A 1133 1093 11.54      
18 A 1061 1024 8.50      
19 A 964 930 3.88      
20 A 950 917 0.51      
21 A 784 756 1.74      
22 A 525 506 2.38      
23 A 378 365 0.48      
24 A 292 282 0.25      
25 A 3085 2977 19.34      
26 A 3085 2977 27.01      
27 A 3081 2973 16.33      
28 A 1458 1407 18.57      
29 A 1450 1399 2.23      
30 A 1438 1387 0.58      
31 A 1085 1047 0.56      
32 A 1045 1008 0.53      
33 A 1000 965 2.42      
34 A 824 795 10.33      
35 A 454 439 3.06      
36 A 265 256 1.60      
37 A 186 179 1.52      
38 A 150 144 0.00      
39 A 127 122 0.80      

Unscaled Zero Point Vibrational Energy (zpe) 29681.4 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 28642.6 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 B3PW91/cc-pVDZ
ABC
0.26802 0.11708 0.08538

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.503 0.491 0.000
H2 -1.965 -0.504 0.000
H3 -1.878 1.038 0.883
H4 -1.878 1.038 -0.883
C5 0.264 -2.092 0.000
H6 0.646 -2.634 -0.883
H7 0.646 -2.634 0.883
H8 -0.830 -2.187 0.000
C9 0.736 -0.672 0.000
H10 1.827 -0.548 0.000
C11 0.000 0.453 0.000
C12 0.661 1.805 0.000
H13 1.758 1.726 0.000
H14 0.360 2.395 0.884
H15 0.360 2.395 -0.884

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 H8 C9 H10 C11 C12 H13 H14 H15
C11.09771.10431.10433.13023.89453.89452.76112.52303.48811.50322.53133.48682.80632.8063
H21.09771.77941.77942.73663.48313.48312.02882.70583.79162.18553.49674.33983.82003.8200
H31.10431.77941.76663.89454.79314.45583.50353.24594.12562.15612.79573.80462.61753.1581
H41.10431.77941.76663.89454.45584.79313.50353.24594.12562.15612.79573.80463.15812.6175
C53.13022.73663.89453.89451.10411.10411.09891.49682.19672.55913.91734.10044.57474.5747
H63.89453.48314.79314.45581.10411.76611.77792.15362.55413.27534.52584.58565.33825.0374
H73.89453.48314.45584.79311.10411.76611.77792.15362.55413.27534.52584.58565.03745.3382
H82.76112.02883.50353.50351.09891.77791.77792.17923.12182.76734.26114.69174.81574.8157
C92.52302.70583.24593.24591.49682.15362.15362.17921.09771.34432.47772.60683.21383.2138
H103.48813.79164.12564.12562.19672.55412.55413.12181.09772.08322.62592.27563.40533.4053
C111.50322.18552.15612.15612.55913.27533.27532.76731.34432.08321.50472.17072.16392.1639
C122.53133.49672.79572.79573.91734.52584.52584.26112.47772.62591.50471.09971.10471.1047
H133.48684.33983.80463.80464.10044.58564.58564.69172.60682.27562.17071.09971.78411.7841
H142.80633.82002.61753.15814.57475.33825.03744.81573.21383.40532.16391.10471.78411.7674
H152.80633.82003.15812.61754.57475.03745.33824.81573.21383.40532.16391.10471.78411.7674

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 124.659 C1 C11 C12 114.605
H2 C1 H3 107.811 H2 C1 H4 107.811
H2 C1 C11 113.417 H3 C1 H4 106.237
H3 C1 C11 110.626 H4 C1 C11 110.626
C5 C9 H10 114.834 C5 C9 C11 128.431
H6 C5 H7 106.210 H6 C5 H8 107.617
H6 C5 C9 110.888 H7 C5 H8 107.617
H7 C5 C9 110.888 H8 C5 C9 113.294
C9 C11 C12 120.736 H10 C9 C11 116.735
C11 C12 H13 111.973 C11 C12 H14 111.119
C11 C12 H15 111.119 H13 C12 H14 108.065
H13 C12 H15 108.065 H14 C12 H15 106.260
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.023      
2 H 0.038      
3 H 0.050      
4 H 0.050      
5 C -0.036      
6 H 0.053      
7 H 0.053      
8 H 0.036      
9 C -0.098      
10 H -0.007      
11 C -0.231      
12 C -0.016      
13 H 0.034      
14 H 0.047      
15 H 0.047      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.207 0.061 0.000 0.216
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.171 -0.386 0.000
y -0.386 -31.706 0.000
z 0.000 0.000 -34.098
Traceless
 xyz
x 0.731 -0.386 0.000
y -0.386 1.429 0.000
z 0.000 0.000 -2.160
Polar
3z2-r2-4.320
x2-y2-0.465
xy-0.386
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> 151.067
(<r2>)1/2 12.291