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 (1-Butene, 2-methyl-)

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 C1 1A
Energy calculated at B3PW91/6-31G*
 hartrees
Energy at 0K-196.466536
Energy at 298.15K-196.476645
Nuclear repulsion energy175.534971
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 3243 3102 20.92      
2 A 3163 3026 10.54      
3 A 3143 3007 25.96      
4 A 3140 3004 30.03      
5 A 3135 3000 39.32      
6 A 3099 2965 24.79      
7 A 3091 2957 14.58      
8 A 3060 2928 28.32      
9 A 3043 2911 26.90      
10 A 3032 2901 29.70      
11 A 1743 1668 14.54      
12 A 1534 1468 2.89      
13 A 1528 1462 6.26      
14 A 1521 1455 11.27      
15 A 1511 1446 10.71      
16 A 1499 1434 2.90      
17 A 1468 1404 0.37      
18 A 1434 1372 4.59      
19 A 1429 1367 3.30      
20 A 1369 1310 1.71      
21 A 1324 1267 2.08      
22 A 1285 1230 1.80      
23 A 1127 1079 0.40      
24 A 1106 1058 6.35      
25 A 1063 1017 1.35      
26 A 1036 992 1.11      
27 A 1009 965 1.16      
28 A 955 914 1.29      
29 A 920 881 45.70      
30 A 806 771 1.93      
31 A 784 751 1.49      
32 A 727 696 0.14      
33 A 536 513 5.91      
34 A 431 412 1.64      
35 A 397 380 0.67      
36 A 263 251 0.14      
37 A 224 215 0.45      
38 A 183 175 0.30      
39 A 68 65 0.06      

Unscaled Zero Point Vibrational Energy (zpe) 30215.8 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 28907.5 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
0.24153 0.12445 0.09459

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.992 1.329 0.024
H2 0.372 1.889 -0.689
H3 2.037 1.440 -0.283
H4 0.869 1.822 0.999
C5 -1.912 0.083 -0.394
H6 -1.884 1.171 -0.521
H7 -2.906 -0.177 -0.015
H8 -1.796 -0.373 -1.383
C9 -0.821 -0.409 0.566
H10 -0.935 -1.489 0.717
H11 -0.978 0.062 1.549
C12 0.585 -0.118 0.097
C13 1.429 -1.102 -0.231
H14 1.137 -2.148 -0.173
H15 2.443 -0.898 -0.570

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 H8 C9 H10 H11 C12 C13 H14 H15
C11.09771.09431.09883.18742.93174.17983.55662.56943.48372.79471.50532.48313.48602.7238
H21.09771.77091.76032.92622.37363.93363.20892.87683.88493.18822.16573.20434.14083.4738
H31.09431.77091.77524.17633.93715.20784.37973.50774.29033.78672.16272.61353.70052.3902
H41.09881.76031.77523.56313.21144.39104.19432.83193.78092.60972.15793.22064.14773.5120
C53.18742.92624.17633.56311.09561.09581.09571.53382.15882.15552.55303.54853.78464.4672
H62.93172.37363.93713.21141.09561.76641.77092.19253.08382.51702.85364.02824.50184.7965
H74.17983.93365.20784.39101.09581.76641.77312.17702.47842.49453.49424.43814.50085.4259
H83.55663.20894.37974.19431.09571.77091.77312.17942.52923.07462.81523.50083.63544.3475
C92.56942.87683.50772.83191.53382.19252.17702.17941.09671.10071.51082.48582.72133.4903
H103.48373.88494.29033.78092.15883.08382.47842.52921.09671.76022.13892.57642.34943.6625
H112.79473.18823.78672.60972.15552.51702.49453.07461.10071.76022.14063.21153.50984.1362
C121.50532.16572.16272.15792.55302.85363.49422.81521.51082.13892.14061.33672.12082.1220
C132.48313.20432.61353.22063.54854.02824.43813.50082.48582.57643.21151.33671.08801.0879
H143.48604.14083.70054.14773.78464.50184.50083.63542.72132.34943.50982.12081.08801.8505
H152.72383.47382.39023.51204.46724.79655.42594.34753.49033.66254.13622.12201.08791.8505

picture of 1-Butene, 2-methyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C12 C9 116.838 C1 C12 C13 121.676
H2 C1 H3 107.780 H2 C1 H4 106.527
H2 C1 C12 111.648 H3 C1 H4 108.085
H3 C1 C12 111.620 H4 C1 C12 110.956
C5 C9 H10 109.171 C5 C9 H11 108.687
C5 C9 C12 113.966 H6 C5 H7 107.426
H6 C5 H8 107.831 H6 C5 C9 111.907
H7 C5 H8 108.007 H7 C5 C9 110.657
H8 C5 C9 110.849 C9 C12 C13 121.486
H10 C9 H11 106.455 H10 C9 C12 109.195
H11 C9 C12 109.097 C12 C13 H14 121.675
C12 C13 H15 121.795 H14 C13 H15 116.529
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.574     -0.356
2 H 0.179     0.107
3 H 0.177     0.108
4 H 0.174     0.101
5 C -0.510     -0.143
6 H 0.168     0.041
7 H 0.169     0.036
8 H 0.175     0.049
9 C -0.372     0.005
10 H 0.167     0.025
11 H 0.164     0.024
12 C 0.219     0.205
13 C -0.444     -0.606
14 H 0.154     0.195
15 H 0.154     0.210


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.345 0.360 0.101 0.508
CHELPG        
AIM        
ESP -0.317 0.373 0.096 0.499


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.438 0.548 -0.819
y 0.548 -31.897 0.148
z -0.819 0.148 -33.911
Traceless
 xyz
x 0.466 0.548 -0.819
y 0.548 1.278 0.148
z -0.819 0.148 -1.744
Polar
3z2-r2-3.487
x2-y2-0.541
xy0.548
xz-0.819
yz0.148


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> 143.388
(<r2>)1/2 11.974