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All results from a given calculation for CH3CHBrCH3 (i-propyl bromide)

using model chemistry: ROHF/3-21G

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/3-21G
 hartrees
Energy at 0K-2677.095425
Energy at 298.15K-2677.106150
HF Energy-2677.095425
Nuclear repulsion energy248.957452
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/3-21G
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 3015 22.30      
2 A' 3285 2980 11.06      
3 A' 3264 2960 15.89      
4 A' 3201 2903 30.50      
5 A' 1675 1519 10.46      
6 A' 1664 1510 7.55      
7 A' 1590 1442 5.95      
8 A' 1389 1260 65.03      
9 A' 1308 1186 41.28      
10 A' 1179 1069 9.88      
11 A' 932 845 10.94      
12 A' 586 531 28.10      
13 A' 436 396 1.51      
14 A' 321 291 2.77      
15 A' 283 257 0.70      
16 A" 3288 2982 13.03      
17 A" 3261 2957 6.54      
18 A" 3195 2898 9.59      
19 A" 1655 1501 2.93      
20 A" 1652 1498 3.04      
21 A" 1574 1428 11.92      
22 A" 1489 1350 0.51      
23 A" 1216 1103 2.39      
24 A" 1065 966 3.18      
25 A" 1039 943 0.16      
26 A" 306 278 0.65      
27 A" 266 242 0.04      

Unscaled Zero Point Vibrational Energy (zpe) 22221.7 cm-1
Scaled (by 0.907) Zero Point Vibrational Energy (zpe) 20155.1 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/3-21G
ABC
0.26845 0.09417 0.07466

See section I.F.4 to change rotational constant units
Geometric Data calculated at ROHF/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.461 -0.917 0.000
Br2 -0.067 1.023 0.000
H3 1.538 -0.888 0.000
C4 -0.067 -1.577 1.270
C5 -0.067 -1.577 -1.270
H6 -1.148 -1.543 1.292
H7 0.249 -2.616 1.289
H8 0.313 -1.084 2.155
H9 -1.148 -1.543 -1.292
H10 0.249 -2.616 -1.289
H11 0.313 -1.084 -2.155

Atom - Atom Distances (Å)
  C1 Br2 H3 C4 C5 H6 H7 H8 H9 H10 H11
C12.01081.07671.52521.52522.15672.14282.16612.15672.14282.1661
Br22.01082.49492.89312.89313.06933.87313.03723.06933.87313.0372
H31.07672.49492.15892.15893.05162.51162.48593.05162.51162.4859
C41.52522.89312.15892.54001.08241.08611.08162.78132.78013.4807
C51.52522.89312.15892.54002.78132.78013.48071.08241.08611.0816
H62.15673.06933.05161.08242.78131.76181.75802.58423.12533.7718
H72.14283.87312.51161.08612.78011.76181.76073.12532.57853.7698
H82.16613.03722.48591.08163.48071.75801.76073.77183.76984.3093
H92.15673.06933.05162.78131.08242.58423.12533.77181.76181.7580
H102.14283.87312.51162.78011.08613.12532.57853.76981.76181.7607
H112.16613.03722.48593.48071.08163.77183.76984.30931.75801.7607

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 110.445 C1 C4 H7 109.128
C1 C4 H8 111.256 C1 C5 H9 110.445
C1 C5 H10 109.128 C1 C5 H11 111.256
Br2 C1 H3 103.652 Br2 C1 C4 109.036
Br2 C1 C5 109.036 H3 C1 C4 110.969
H3 C1 C5 110.969 C4 C1 C5 112.752
H6 C4 H7 108.669 H6 C4 H8 108.659
H7 C4 H8 108.628 H9 C5 H10 108.669
H9 C5 H11 108.659 H10 C5 H11 108.628
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROHF/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.488      
2 Br -0.007      
3 H 0.279      
4 C -0.557      
5 C -0.557      
6 H 0.225      
7 H 0.212      
8 H 0.229      
9 H 0.225      
10 H 0.212      
11 H 0.229      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.512 -2.471 0.000 2.524
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.659 -0.593 0.000
y -0.593 -38.176 0.000
z 0.000 0.000 -38.632
Traceless
 xyz
x -0.255 -0.593 0.000
y -0.593 0.470 0.000
z 0.000 0.000 -0.215
Polar
3z2-r2-0.430
x2-y2-0.483
xy-0.593
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> 159.226
(<r2>)1/2 12.618