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 CH3CHBrCH3 (i-propyl bromide)

using model chemistry: B3PW91/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/6-311G**
 hartrees
Energy at 0K-2692.666944
Energy at 298.15K-2692.677376
HF Energy-2692.666944
Nuclear repulsion energy250.206335
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 B3PW91/6-311G**
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' 3142 3026 24.02      
2 A' 3117 3002 25.58      
3 A' 3099 2985 3.27      
4 A' 3036 2924 28.95      
5 A' 1500 1444 7.68      
6 A' 1485 1431 11.14      
7 A' 1414 1362 6.09      
8 A' 1256 1210 46.62      
9 A' 1175 1132 32.60      
10 A' 1058 1019 13.55      
11 A' 895 862 8.85      
12 A' 538 519 19.84      
13 A' 401 386 1.93      
14 A' 297 286 2.45      
15 A' 261 252 0.91      
16 A" 3136 3021 11.21      
17 A" 3106 2991 2.80      
18 A" 3032 2920 10.81      
19 A" 1478 1424 0.56      
20 A" 1472 1418 2.64      
21 A" 1401 1350 14.49      
22 A" 1354 1304 0.55      
23 A" 1151 1108 1.55      
24 A" 951 916 0.33      
25 A" 939 904 1.80      
26 A" 283 273 0.56      
27 A" 242 233 0.08      

Unscaled Zero Point Vibrational Energy (zpe) 20609.5 cm-1
Scaled (by 0.9631) Zero Point Vibrational Energy (zpe) 19849.0 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 B3PW91/6-311G**
ABC
0.26844 0.09583 0.07562

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.911 -0.442 0.000
Br2 -0.676 0.758 0.000
H3 1.743 0.264 0.000
C4 0.911 -1.269 1.270
C5 0.911 -1.269 -1.270
H6 0.041 -1.929 1.308
H7 1.814 -1.891 1.293
H8 0.907 -0.638 2.160
H9 0.041 -1.929 -1.308
H10 1.814 -1.891 -1.293
H11 0.907 -0.638 -2.160

Atom - Atom Distances (Å)
  C1 Br2 H3 C4 C5 H6 H7 H8 H9 H10 H11
C11.99031.09071.51501.51502.16292.14162.16912.16292.14162.1691
Br21.99032.46942.87072.87073.07313.85883.02063.07313.85883.0206
H31.09072.46942.15682.15683.06812.51402.48583.06812.51402.4858
C41.51502.87072.15682.53911.09291.09621.09122.79932.78753.4872
C51.51502.87072.15682.53912.79932.78753.48721.09291.09621.0912
H62.16293.07313.06811.09292.79931.77291.77242.61573.14803.8003
H72.14163.85882.51401.09622.78751.77291.77263.14802.58693.7840
H82.16913.02062.48581.09123.48721.77241.77263.80033.78404.3204
H92.16293.07313.06812.79931.09292.61573.14803.80031.77291.7724
H102.14163.85882.51402.78751.09623.14802.58693.78401.77291.7726
H112.16913.02062.48583.48721.09123.80033.78404.32041.77241.7726

picture of i-propyl bromide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C4 H6 111.033 C1 C4 H7 109.146
C1 C4 H8 111.639 C1 C5 H9 111.033
C1 C5 H10 109.146 C1 C5 H11 111.639
Br2 C1 H3 102.603 Br2 C1 C4 109.208
Br2 C1 C5 109.208 H3 C1 C4 110.675
H3 C1 C5 110.675 C4 C1 C5 113.857
H6 C4 H7 108.168 H6 C4 H8 108.488
H7 C4 H8 108.266 H9 C5 H10 108.168
H9 C5 H11 108.488 H10 C5 H11 108.266
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.331      
2 Br -0.092      
3 H 0.187      
4 C -0.295      
5 C -0.295      
6 H 0.140      
7 H 0.126      
8 H 0.146      
9 H 0.140      
10 H 0.126      
11 H 0.146      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.804 -1.530 0.000 2.365
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -37.299 -0.717 0.000
y -0.717 -38.433 0.000
z 0.000 0.000 -38.367
Traceless
 xyz
x 1.102 -0.717 0.000
y -0.717 -0.600 0.000
z 0.000 0.000 -0.501
Polar
3z2-r2-1.003
x2-y21.135
xy-0.717
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.914 -1.881 0.000
y -1.881 8.021 0.000
z 0.000 0.000 7.158


<r2> (average value of r2) Å2
<r2> 157.503
(<r2>)1/2 12.550