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

using model chemistry: B3PW91/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/3-21G*
 hartrees
Energy at 0K-2679.892549
Energy at 298.15K-2679.903037
HF Energy-2679.892549
Nuclear repulsion energy250.940797
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 B3PW91/3-21G*
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' 3161 3032 20.43      
2 A' 3135 3008 18.99      
3 A' 3118 2992 2.20      
4 A' 3055 2931 22.55      
5 A' 1563 1500 11.54      
6 A' 1552 1489 12.81      
7 A' 1466 1406 9.63      
8 A' 1287 1234 41.77      
9 A' 1211 1162 30.96      
10 A' 1091 1046 11.19      
11 A' 892 855 6.67      
12 A' 570 547 12.74      
13 A' 408 391 1.13      
14 A' 297 285 2.06      
15 A' 266 255 0.54      
16 A" 3152 3024 8.63      
17 A" 3125 2998 2.65      
18 A" 3051 2927 8.96      
19 A" 1541 1479 1.08      
20 A" 1537 1475 4.86      
21 A" 1449 1390 20.07      
22 A" 1379 1323 1.67      
23 A" 1149 1103 2.24      
24 A" 987 947 3.06      
25 A" 975 935 0.75      
26 A" 286 274 0.60      
27 A" 247 237 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 20973.2 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 20121.7 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 B3PW91/3-21G*
ABC
0.26639 0.09717 0.07652

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.469 -0.898 0.000
Br2 -0.067 1.005 0.000
H3 1.562 -0.874 0.000
C4 -0.067 -1.550 1.272
C5 -0.067 -1.550 -1.272
H6 -1.162 -1.508 1.284
H7 0.246 -2.602 1.304
H8 0.313 -1.042 2.164
H9 -1.162 -1.508 -1.284
H10 0.246 -2.602 -1.304
H11 0.313 -1.042 -2.164

Atom - Atom Distances (Å)
  C1 Br2 H3 C4 C5 H6 H7 H8 H9 H10 H11
C11.97691.09311.52691.52692.16322.15742.17452.16322.15742.1745
Br21.97692.48652.85402.85403.02673.84833.00323.02673.84833.0032
H31.09312.48652.17482.17483.07692.53362.50423.07692.53362.5042
C41.52692.85402.17482.54491.09511.09851.09412.78132.80063.4946
C51.52692.85402.17482.54492.78132.80063.49461.09511.09851.0941
H62.16323.02673.07691.09512.78131.78291.77922.56833.14273.7791
H72.15743.84832.53361.09852.80061.78291.78263.14272.60783.8033
H82.17453.00322.50421.09413.49461.77921.78263.77913.80334.3283
H92.16323.02673.07692.78131.09512.56833.14273.77911.78291.7792
H102.15743.84832.53362.80061.09853.14272.60783.80331.78291.7826
H112.17453.00322.50423.49461.09413.77913.80334.32831.77921.7826

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 110.091 C1 C4 H7 109.435
C1 C4 H8 111.048 C1 C5 H9 110.091
C1 C5 H10 109.435 C1 C5 H11 111.048
Br2 C1 H3 104.465 Br2 C1 C4 108.400
Br2 C1 C5 108.400 H3 C1 C4 111.133
H3 C1 C5 111.133 C4 C1 C5 112.888
H6 C4 H7 108.731 H6 C4 H8 108.716
H7 C4 H8 108.774 H9 C5 H10 108.731
H9 C5 H11 108.716 H10 C5 H11 108.774
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.331      
2 Br -0.082      
3 H 0.261      
4 C -0.603      
5 C -0.603      
6 H 0.230      
7 H 0.216      
8 H 0.233      
9 H 0.230      
10 H 0.216      
11 H 0.233      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.409 -2.017 0.000 2.058
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -37.804 -0.724 0.000
y -0.724 -36.731 0.000
z 0.000 0.000 -37.814
Traceless
 xyz
x -0.531 -0.724 0.000
y -0.724 1.078 0.000
z 0.000 0.000 -0.547
Polar
3z2-r2-1.094
x2-y2-1.073
xy-0.724
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.514 -0.404 0.000
y -0.404 8.530 0.000
z 0.000 0.000 6.178


<r2> (average value of r2) Å2
<r2> 155.899
(<r2>)1/2 12.486