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 CH3C(NH2)HCH2CH3 (2-Butanamine)

using model chemistry: B3PW91/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B3PW91/6-31+G**
 hartrees
Energy at 0K-213.750669
Energy at 298.15K-213.763305
Nuclear repulsion energy193.808122
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 B3PW91/6-31+G**
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 3621 3477 0.86      
2 A 3530 3389 0.85      
3 A 3135 3010 35.16      
4 A 3123 2999 42.09      
5 A 3117 2993 32.01      
6 A 3117 2993 40.89      
7 A 3086 2963 7.97      
8 A 3044 2922 36.04      
9 A 3040 2919 29.03      
10 A 3039 2918 32.30      
11 A 2929 2812 78.89      
12 A 1663 1597 53.21      
13 A 1509 1449 10.74      
14 A 1500 1440 3.87      
15 A 1498 1438 7.36      
16 A 1491 1432 5.50      
17 A 1475 1416 1.10      
18 A 1421 1364 6.57      
19 A 1408 1352 12.41      
20 A 1404 1348 9.18      
21 A 1381 1325 17.00      
22 A 1330 1277 2.52      
23 A 1297 1245 2.24      
24 A 1253 1203 0.83      
25 A 1194 1147 3.89      
26 A 1162 1116 8.04      
27 A 1070 1027 1.94      
28 A 1032 991 6.03      
29 A 1016 975 3.30      
30 A 981 941 3.99      
31 A 943 906 5.80      
32 A 847 813 104.71      
33 A 810 778 24.32      
34 A 768 738 4.61      
35 A 480 461 8.42      
36 A 452 434 5.73      
37 A 374 359 1.33      
38 A 288 277 37.22      
39 A 253 243 0.15      
40 A 228 219 5.72      
41 A 221 212 10.50      
42 A 106 102 1.40      

Unscaled Zero Point Vibrational Energy (zpe) 32818.3 cm-1
Scaled (by 0.9601) Zero Point Vibrational Energy (zpe) 31508.9 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 B3PW91/6-31+G**
ABC
0.26133 0.11356 0.08727

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.579 1.378 -0.230
H2 -0.212 1.948 0.055
H3 1.416 1.846 0.104
C4 1.773 -0.727 -0.006
H5 1.915 -0.776 -1.091
H6 2.648 -0.228 0.427
H7 1.743 -1.747 0.391
C8 0.487 0.025 0.325
H9 0.375 0.037 1.427
C10 -0.736 -0.693 -0.252
H11 -0.620 -0.745 -1.343
H12 -0.731 -1.726 0.121
C13 -2.074 -0.043 0.095
H14 -2.911 -0.647 -0.272
H15 -2.176 0.950 -0.358
H16 -2.197 0.064 1.180

Atom - Atom Distances (Å)
  N1 H2 H3 C4 H5 H6 H7 C8 H9 C10 H11 H12 C13 H14 H15 H16
N11.01511.01572.43062.67752.70093.39221.46562.14192.45372.67993.38723.02724.03462.79063.3794
H21.01511.63163.33093.64093.61244.19292.06322.42412.70993.06093.71042.72613.75772.24142.9586
H31.01571.63162.59982.92482.43403.61912.05602.47153.34773.59874.16743.96865.00753.73074.1696
C42.43063.33092.59981.09541.09651.09501.52592.14302.52152.74142.69873.90914.69214.30444.2181
H52.67753.64092.92481.09541.77301.77972.16493.06182.78182.54773.06084.22624.89654.50024.7720
H62.70093.61242.43401.09651.77301.76872.17812.49793.48323.75263.70874.73795.61855.02744.9119
H73.39224.19293.61911.09501.77971.76872.17272.47532.76933.09742.48824.19074.82774.81534.4071
C81.46562.06322.05601.52592.16492.17812.17271.10761.53192.14522.14272.57293.51492.90062.8172
H92.14192.42412.47152.14303.06182.49792.47531.10762.14183.04512.45672.78883.76133.24402.5833
C102.45372.70993.34772.52152.78183.48322.76931.53192.14181.09781.09791.52812.17532.18712.1817
H112.67993.06093.59872.74142.54773.75263.09742.14523.04511.09781.76562.16242.53062.50233.0833
H123.38723.71044.16742.69873.06083.70872.48822.14272.45671.09791.76562.15402.46433.07842.5449
C133.02722.72613.96863.90914.22624.73794.19072.57292.78881.52812.16242.15401.09501.09561.0971
H144.03463.75775.00754.69214.89655.61854.82773.51493.76132.17532.53062.46431.09501.75921.7673
H152.79062.24143.73074.30444.50025.02744.81532.90063.24402.18712.50233.07841.09561.75921.7749
H163.37942.95864.16964.21814.77204.91194.40712.81722.58332.18173.08332.54491.09711.76731.7749

picture of 2-Butanamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C8 C4 108.668 N1 C8 H9 111.944
N1 C8 C10 109.870 H2 N1 H3 106.916
H2 N1 C8 111.256 H3 N1 C8 110.608
C4 C8 H9 107.873 C4 C8 C10 111.100
H5 C4 H6 107.969 H5 C4 H7 108.685
H5 C4 C8 110.273 H6 C4 H7 107.624
H6 C4 C8 111.260 H7 C4 C8 110.919
C8 C10 H11 108.185 C8 C10 H12 107.993
C8 C10 C13 114.448 H9 C8 C10 107.386
C10 C13 H14 110.971 C10 C13 H15 111.881
C10 C13 H16 111.359 H11 C10 H12 107.043
H11 C10 C13 109.786 H12 C10 C13 109.119
H14 C13 H15 106.853 H14 C13 H16 107.464
H15 C13 H16 108.090
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.605      
2 H 0.285      
3 H 0.284      
4 C -0.650      
5 H 0.177      
6 H 0.150      
7 H 0.159      
8 C 0.088      
9 H 0.129      
10 C -0.170      
11 H 0.169      
12 H 0.150      
13 C -0.650      
14 H 0.167      
15 H 0.158      
16 H 0.160      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.059 0.082 1.283 1.287
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.253 0.338 1.149
y 0.338 -32.583 2.166
z 1.149 2.166 -36.257
Traceless
 xyz
x 1.168 0.338 1.149
y 0.338 2.172 2.166
z 1.149 2.166 -3.339
Polar
3z2-r2-6.678
x2-y2-0.669
xy0.338
xz1.149
yz2.166


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> 151.378
(<r2>)1/2 12.304