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: B3LYP/CEP-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 B3LYP/CEP-31G*
 hartrees
Energy at 0K-39.119891
Energy at 298.15K-39.132417
Nuclear repulsion energy111.843522
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 B3LYP/CEP-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 3555 3433 1.35      
2 A 3470 3351 3.45      
3 A 3118 3011 76.20      
4 A 3106 2999 75.78      
5 A 3100 2994 85.79      
6 A 3098 2991 27.28      
7 A 3075 2970 5.12      
8 A 3036 2932 34.20      
9 A 3032 2928 60.18      
10 A 3031 2927 15.99      
11 A 2937 2836 89.91      
12 A 1677 1619 40.17      
13 A 1510 1458 9.24      
14 A 1500 1448 4.36      
15 A 1498 1447 5.33      
16 A 1491 1440 4.24      
17 A 1474 1423 1.20      
18 A 1424 1375 5.67      
19 A 1407 1359 9.48      
20 A 1399 1351 5.37      
21 A 1372 1325 14.36      
22 A 1319 1274 4.64      
23 A 1291 1246 2.09      
24 A 1250 1207 0.68      
25 A 1180 1140 2.14      
26 A 1148 1108 17.00      
27 A 1054 1018 2.03      
28 A 1020 985 3.44      
29 A 1009 974 7.27      
30 A 969 935 6.23      
31 A 935 903 21.40      
32 A 887 857 94.80      
33 A 803 776 1.65      
34 A 750 725 0.15      
35 A 467 451 8.28      
36 A 438 423 6.62      
37 A 364 351 1.28      
38 A 289 279 44.03      
39 A 250 242 0.04      
40 A 227 219 5.85      
41 A 215 208 7.63      
42 A 99 96 1.69      

Unscaled Zero Point Vibrational Energy (zpe) 32634.1 cm-1
Scaled (by 0.9657) Zero Point Vibrational Energy (zpe) 31514.8 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 B3LYP/CEP-31G*
ABC
0.25531 0.11130 0.08559

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.579 1.390 -0.269
H2 -0.222 1.951 0.037
H3 1.408 1.864 0.107
C4 1.797 -0.727 0.002
H5 1.929 -0.794 -1.092
H6 2.679 -0.208 0.422
H7 1.777 -1.750 0.418
C8 0.491 0.029 0.331
H9 0.375 0.066 1.438
C10 -0.734 -0.715 -0.255
H11 -0.615 -0.766 -1.352
H12 -0.726 -1.753 0.126
C13 -2.094 -0.059 0.095
H14 -2.935 -0.671 -0.274
H15 -2.194 0.941 -0.365
H16 -2.214 0.052 1.189

Atom - Atom Distances (Å)
  N1 H2 H3 C4 H5 H6 H7 C8 H9 C10 H11 H12 C13 H14 H15 H16
N11.02511.02582.45762.69622.72783.43051.49042.17032.48122.69243.42663.06204.07412.81093.4235
H21.02511.63383.35433.66593.63694.22372.07122.42342.73023.07693.73952.74663.78562.25152.9832
H31.02581.63382.62222.96202.45143.64602.06332.46413.37173.62454.19973.99445.04283.74784.1920
C42.45763.35432.62221.10381.10571.10451.54432.17092.54432.76652.72673.94874.74044.34104.2554
H52.69623.66592.96201.10381.78761.79382.18383.09092.79272.55753.07454.25794.93384.53174.8048
H62.72783.63692.45141.10571.78761.78572.20212.53293.51603.78243.75064.78585.67555.06774.9599
H73.43054.22373.64601.10451.79381.78572.19662.51032.79853.13472.52034.23654.88344.86034.4469
C81.49042.07122.06331.54432.18382.20212.19661.11351.54862.16552.16802.59713.54902.91992.8386
H92.17032.42342.46412.17093.09092.53292.51031.11352.16913.07512.49842.81303.79853.25802.6015
C102.48122.73023.37172.54432.79273.51602.79851.54862.16911.10481.10621.54942.20132.21002.2054
H112.69243.07693.62452.76652.55753.78243.13472.16553.07511.10481.78102.18622.55992.52603.1118
H123.42663.73954.19972.72673.07453.75062.52032.16802.49841.10621.78102.17782.49203.10702.5700
C133.06202.74663.99443.94874.25794.78584.23652.59712.81301.54942.18622.17781.10401.10471.1062
H144.07413.78565.04284.74044.93385.67554.88343.54903.79852.20132.55992.49201.10401.77651.7836
H152.81092.25153.74784.34104.53175.06774.86032.91993.25802.21002.52603.10701.10471.77651.7897
H163.42352.98324.19204.25544.80484.95994.44692.83862.60152.20543.11182.57001.10621.78361.7897

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 108.146 N1 C8 H9 112.107
N1 C8 C10 109.444 H2 N1 H3 105.618
H2 N1 C8 109.456 H3 N1 C8 108.772
C4 C8 H9 108.442 C4 C8 C10 110.693
H5 C4 H6 108.014 H5 C4 H7 108.645
H5 C4 C8 109.996 H6 C4 H7 107.794
H6 C4 C8 111.329 H7 C4 C8 110.961
C8 C10 H11 108.230 C8 C10 H12 108.345
C8 C10 C13 113.925 H9 C8 C10 108.018
C10 C13 H14 111.002 C10 C13 H15 111.648
C10 C13 H16 111.199 H11 C10 H12 107.314
H11 C10 C13 109.775 H12 C10 C13 109.039
H14 C13 H15 107.087 H14 C13 H16 107.611
H15 C13 H16 108.098
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.566      
2 H 0.247      
3 H 0.249      
4 C -0.471      
5 H 0.149      
6 H 0.158      
7 H 0.138      
8 C -0.034      
9 H 0.132      
10 C -0.238      
11 H 0.134      
12 H 0.119      
13 C -0.462      
14 H 0.179      
15 H 0.135      
16 H 0.132      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.069 0.116 1.403 1.410
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.054 0.418 1.229
y 0.418 -31.712 2.220
z 1.229 2.220 -35.042
Traceless
 xyz
x 0.323 0.418 1.229
y 0.418 2.336 2.220
z 1.229 2.220 -2.660
Polar
3z2-r2-5.319
x2-y2-1.342
xy0.418
xz1.229
yz2.220


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.831 -0.138 -0.012
y -0.138 7.503 -0.087
z -0.012 -0.087 6.468


<r2> (average value of r2) Å2
<r2> 129.538
(<r2>)1/2 11.381