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: HF/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 HF/6-31G*
 hartrees
Energy at 0K-2687.577495
Energy at 298.15K-2687.588183
HF Energy-2687.577495
Nuclear repulsion energy250.872979
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 HF/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' 3324 2987 36.69      
2 A' 3299 2964 14.42      
3 A' 3275 2943 27.42      
4 A' 3209 2884 44.34      
5 A' 1649 1482 5.72      
6 A' 1639 1473 5.69      
7 A' 1576 1416 2.84      
8 A' 1381 1240 69.01      
9 A' 1294 1163 32.64      
10 A' 1160 1042 7.40      
11 A' 950 854 10.14      
12 A' 577 519 34.19      
13 A' 431 388 2.79      
14 A' 321 288 3.09      
15 A' 285 256 0.90      
16 A" 3303 2968 16.52      
17 A" 3272 2940 5.46      
18 A" 3202 2877 14.34      
19 A" 1630 1464 0.78      
20 A" 1628 1463 1.82      
21 A" 1564 1405 5.28      
22 A" 1492 1341 0.75      
23 A" 1236 1110 0.38      
24 A" 1039 933 0.01      
25 A" 1028 924 1.09      
26 A" 311 279 0.75      
27 A" 264 237 0.06      

Unscaled Zero Point Vibrational Energy (zpe) 22169.6 cm-1
Scaled (by 0.8985) Zero Point Vibrational Energy (zpe) 19919.4 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 HF/6-31G*
ABC
0.26807 0.09652 0.07602

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.451 -0.906 0.000
Br2 -0.066 1.010 0.000
H3 1.529 -0.870 0.000
C4 -0.066 -1.556 1.272
C5 -0.066 -1.556 -1.272
H6 -1.148 -1.533 1.306
H7 0.256 -2.594 1.299
H8 0.316 -1.057 2.153
H9 -1.148 -1.533 -1.306
H10 0.256 -2.594 -1.299
H11 0.316 -1.057 -2.153

Atom - Atom Distances (Å)
  C1 Br2 H3 C4 C5 H6 H7 H8 H9 H10 H11
C11.98421.07831.51901.51902.15812.13962.16232.15812.13962.1623
Br21.98422.46482.86382.86383.05653.84473.00853.05653.84473.0085
H31.07832.46482.15222.15223.05192.50692.47813.05192.50692.4781
C41.51902.86382.15222.54341.08361.08721.08242.79572.79133.4817
C51.51902.86382.15222.54342.79572.79133.48171.08361.08721.0824
H62.15813.05653.05191.08362.79571.76051.75772.61143.14413.7859
H72.13963.84472.50691.08722.79131.76051.75973.14412.59863.7796
H82.16233.00852.47811.08243.48171.75771.75973.78593.77964.3056
H92.15813.05653.05192.79571.08362.61143.14413.78591.76051.7577
H102.13963.84472.50692.79131.08723.14412.59863.77961.76051.7597
H112.16233.00852.47813.48171.08243.78593.77964.30561.75771.7597

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 110.925 C1 C4 H7 109.237
C1 C4 H8 111.337 C1 C5 H9 110.925
C1 C5 H10 109.237 C1 C5 H11 111.337
Br2 C1 H3 103.178 Br2 C1 C4 108.944
Br2 C1 C5 108.944 H3 C1 C4 110.768
H3 C1 C5 110.768 C4 C1 C5 113.683
H6 C4 H7 108.383 H6 C4 H8 108.476
H7 C4 H8 108.402 H9 C5 H10 108.383
H9 C5 H11 108.476 H10 C5 H11 108.402
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.156      
2 Br -0.203      
3 H 0.217      
4 C -0.472      
5 C -0.472      
6 H 0.184      
7 H 0.169      
8 H 0.191      
9 H 0.184      
10 H 0.169      
11 H 0.191      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.536 -2.501 0.000 2.558
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.450 -0.760 0.000
y -0.760 -37.715 0.000
z 0.000 0.000 -38.568
Traceless
 xyz
x -0.309 -0.760 0.000
y -0.760 0.794 0.000
z 0.000 0.000 -0.485
Polar
3z2-r2-0.971
x2-y2-0.735
xy-0.760
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.816 -0.426 0.000
y -0.426 8.841 0.000
z 0.000 0.000 6.353


<r2> (average value of r2) Å2
<r2> 156.904
(<r2>)1/2 12.526