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: B3LYP/CEP-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3LYP/CEP-31G
 hartrees
Energy at 0K-34.517958
Energy at 298.15K-34.528232
HF Energy-34.517958
Nuclear repulsion energy69.163973
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
4/u)
Dep P Dep U
1 A' 3160 3060 77.43      
2 A' 3130 3031 40.96      
3 A' 3114 3015 14.74      
4 A' 3034 2938 58.03      
5 A' 1516 1468 11.48      
6 A' 1499 1452 13.09      
7 A' 1435 1389 7.80      
8 A' 1247 1207 59.43      
9 A' 1183 1146 54.10      
10 A' 1058 1025 16.76      
11 A' 885 857 11.11      
12 A' 502 487 29.43      
13 A' 394 381 3.28      
14 A' 278 269 4.66      
15 A' 242 234 1.08      
16 A" 3149 3049 22.93      
17 A" 3115 3017 11.48      
18 A" 3029 2934 18.96      
19 A" 1498 1451 1.80      
20 A" 1487 1440 3.65      
21 A" 1421 1376 14.26      
22 A" 1355 1312 3.23      
23 A" 1153 1116 2.18      
24 A" 958 928 0.77      
25 A" 948 918 3.24      
26 A" 268 260 0.48      
27 A" 219 212 0.06      

Unscaled Zero Point Vibrational Energy (zpe) 20637.2 cm-1
Scaled (by 0.9684) Zero Point Vibrational Energy (zpe) 19985.0 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 B3LYP/CEP-31G
ABC
0.25810 0.09006 0.07143

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.466 -0.958 0.000
Br2 -0.067 1.047 0.000
H3 1.563 -0.895 0.000
C4 -0.067 -1.608 1.296
C5 -0.067 -1.608 -1.296
H6 -1.169 -1.582 1.325
H7 0.257 -2.666 1.326
H8 0.320 -1.099 2.192
H9 -1.169 -1.582 -1.325
H10 0.257 -2.666 -1.326
H11 0.320 -1.099 -2.192

Atom - Atom Distances (Å)
  C1 Br2 H3 C4 C5 H6 H7 H8 H9 H10 H11
C12.07481.09961.54421.54422.19492.17192.20142.19492.17192.2014
Br22.07482.53592.95372.95373.14323.95573.09163.14323.95573.0916
H31.09962.53592.20152.20153.11382.56912.52853.11382.56912.5285
C41.54422.95372.20152.59151.10261.10761.10112.84302.84563.5460
C51.54422.95372.20152.59152.84302.84563.54601.10261.10761.1011
H62.19493.14323.11381.10262.84301.79161.78982.64983.19923.8497
H72.17193.95572.56911.10762.84561.79161.79213.19922.65123.8516
H82.20143.09162.52851.10113.54601.78981.79213.84973.85164.3842
H92.19493.14323.11382.84301.10262.64983.19923.84971.79161.7898
H102.17193.95572.56912.84561.10763.19922.65123.85161.79161.7921
H112.20143.09162.52853.54601.10113.84973.85164.38421.78981.7921

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 110.946 C1 C4 H7 108.858
C1 C4 H8 111.554 C1 C5 H9 110.946
C1 C5 H10 108.858 C1 C5 H11 111.554
Br2 C1 H3 101.594 Br2 C1 C4 108.515
Br2 C1 C5 108.515 H3 C1 C4 111.644
H3 C1 C5 111.644 C4 C1 C5 114.091
H6 C4 H7 108.313 H6 C4 H8 108.621
H7 C4 H8 108.464 H9 C5 H10 108.313
H9 C5 H11 108.621 H10 C5 H11 108.464
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 C -0.343      
2 Br -0.086      
3 H 0.201      
4 C -0.374      
5 C -0.374      
6 H 0.161      
7 H 0.141      
8 H 0.186      
9 H 0.161      
10 H 0.141      
11 H 0.186      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.533 -2.904 0.000 2.952
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.809 -0.813 0.000
y -0.813 -33.872 0.000
z 0.000 0.000 -34.855
Traceless
 xyz
x -0.445 -0.813 0.000
y -0.813 0.960 0.000
z 0.000 0.000 -0.515
Polar
3z2-r2-1.030
x2-y2-0.937
xy-0.813
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.973 -0.722 0.000
y -0.722 9.693 0.000
z 0.000 0.000 5.941


<r2> (average value of r2) Å2
<r2> 112.533
(<r2>)1/2 10.608