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: ROHF/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at ROHF/6-31G
 hartrees
Energy at 0K-2687.404562
Energy at 298.15K-2687.415263
HF Energy-2687.404562
Nuclear repulsion energy248.946362
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 ROHF/6-31G
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' 3327 2979 28.78      
2 A' 3295 2950 12.35      
3 A' 3269 2926 21.24      
4 A' 3195 2861 41.78      
5 A' 1659 1486 11.02      
6 A' 1652 1479 8.90      
7 A' 1598 1430 5.49      
8 A' 1385 1240 64.26      
9 A' 1313 1176 59.05      
10 A' 1173 1050 7.14      
11 A' 956 856 12.66      
12 A' 554 496 44.61      
13 A' 437 391 4.40      
14 A' 312 279 5.81      
15 A' 286 256 1.11      
16 A" 3299 2954 14.66      
17 A" 3266 2924 6.62      
18 A" 3189 2855 13.01      
19 A" 1642 1470 2.02      
20 A" 1640 1468 3.98      
21 A" 1582 1416 12.46      
22 A" 1506 1348 1.12      
23 A" 1251 1120 1.77      
24 A" 1067 955 2.35      
25 A" 1061 950 0.30      
26 A" 312 279 0.87      
27 A" 262 235 0.11      

Unscaled Zero Point Vibrational Energy (zpe) 22243.2 cm-1
Scaled (by 0.8953) Zero Point Vibrational Energy (zpe) 19914.3 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 ROHF/6-31G
ABC
0.26625 0.09477 0.07490

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.466 -0.942 0.000
Br2 -0.067 1.020 0.000
H3 1.542 -0.889 0.000
C4 -0.067 -1.564 1.275
C5 -0.067 -1.564 -1.275
H6 -1.148 -1.529 1.299
H7 0.242 -2.604 1.326
H8 0.310 -1.055 2.150
H9 -1.148 -1.529 -1.299
H10 0.242 -2.604 -1.326
H11 0.310 -1.055 -2.150

Atom - Atom Distances (Å)
  C1 Br2 H3 C4 C5 H6 H7 H8 H9 H10 H11
C12.03231.07661.51561.51562.15402.13832.15892.15402.13832.1589
Br22.03232.49582.88112.88113.05813.87103.01133.05813.87103.0113
H31.07662.49582.16082.16083.05502.52752.48373.05502.52752.4837
C41.51562.88112.16082.54931.08211.08611.08092.79202.81783.4831
C51.51562.88112.16082.54932.79202.81783.48311.08211.08611.0809
H62.15403.05813.05501.08212.79201.75801.75352.59843.15933.7748
H72.13833.87102.52751.08612.81781.75801.75643.15932.65183.8064
H82.15893.01132.48371.08093.48311.75351.75643.77483.80644.3005
H92.15403.05813.05502.79201.08212.59843.15933.77481.75801.7535
H102.13833.87102.52752.81781.08613.15932.65183.80641.75801.7564
H112.15893.01132.48373.48311.08093.77483.80644.30051.75351.7564

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 110.933 C1 C4 H7 109.440
C1 C4 H8 111.402 C1 C5 H9 110.933
C1 C5 H10 109.440 C1 C5 H11 111.402
Br2 C1 H3 102.402 Br2 C1 C4 107.708
Br2 C1 C5 107.708 H3 C1 C4 111.815
H3 C1 C5 111.815 C4 C1 C5 114.498
H6 C4 H7 108.352 H6 C4 H8 108.330
H7 C4 H8 108.294 H9 C5 H10 108.352
H9 C5 H11 108.330 H10 C5 H11 108.294
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROHF/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.376      
2 Br -0.073      
3 H 0.231      
4 C -0.423      
5 C -0.423      
6 H 0.181      
7 H 0.165      
8 H 0.186      
9 H 0.181      
10 H 0.165      
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
  0.614 -2.948 0.000 3.011
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.672 -0.635 0.000
y -0.635 -38.442 0.000
z 0.000 0.000 -38.547
Traceless
 xyz
x -0.177 -0.635 0.000
y -0.635 0.167 0.000
z 0.000 0.000 0.010
Polar
3z2-r20.020
x2-y2-0.230
xy-0.635
xz0.000
yz0.000


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> 158.871
(<r2>)1/2 12.604