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 CH3CH2CH2Br (n-propyl bromide)

using model chemistry: HF/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 HF/3-21G*
 hartrees
Energy at 0K-2677.305448
Energy at 298.15K-2677.316095
HF Energy-2677.305448
Nuclear repulsion energy235.830342
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/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' 3275 2956 23.20      
2 A' 3262 2944 27.54      
3 A' 3232 2917 4.75      
4 A' 3196 2885 24.02      
5 A' 1674 1511 8.03      
6 A' 1660 1498 3.11      
7 A' 1644 1484 4.33      
8 A' 1576 1422 8.41      
9 A' 1499 1353 5.27      
10 A' 1399 1263 43.20      
11 A' 1207 1090 7.67      
12 A' 1059 956 1.51      
13 A' 946 854 5.88      
14 A' 718 648 30.08      
15 A' 336 303 2.52      
16 A' 231 209 1.49      
17 A" 3339 3014 10.10      
18 A" 3278 2958 26.36      
19 A" 3246 2930 10.23      
20 A" 1672 1509 10.22      
21 A" 1461 1319 0.01      
22 A" 1373 1239 0.16      
23 A" 1180 1065 2.49      
24 A" 948 855 0.02      
25 A" 814 735 6.18      
26 A" 251 227 0.05      
27 A" 122 110 0.86      

Unscaled Zero Point Vibrational Energy (zpe) 22298.2 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 20126.4 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/3-21G*
ABC
0.84108 0.05430 0.05249

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.845 0.000
C2 1.517 0.642 0.000
C3 2.244 2.003 0.000
Br4 -0.937 -0.881 0.000
H5 -0.332 1.366 0.883
H6 -0.332 1.366 -0.883
H7 1.799 0.070 0.874
H8 1.799 0.070 -0.874
H9 3.318 1.858 0.000
H10 1.981 2.580 -0.880
H11 1.981 2.580 0.880

Atom - Atom Distances (Å)
  C1 C2 C3 Br4 H5 H6 H7 H8 H9 H10 H11
C11.53032.52491.96331.07781.07782.14552.14553.46902.77682.7768
C21.53031.54272.88742.17332.17331.08251.08252.17292.17862.1786
C32.52491.54274.29282.79672.79672.16752.16751.08381.08461.0846
Br41.96332.88744.29282.48842.48843.02543.02545.05944.61144.6114
H51.07782.17332.79672.48841.76562.49503.05173.78763.15172.6129
H61.07782.17332.79672.48841.76563.05172.49503.78762.61293.1517
H72.14551.08252.16753.02542.49503.05171.74882.50333.06792.5171
H82.14551.08252.16753.02543.05172.49501.74882.50332.51713.0679
H93.46902.17291.08385.05943.78763.78762.50332.50331.75571.7557
H102.77682.17861.08464.61143.15172.61293.06792.51711.75571.7592
H112.77682.17861.08464.61142.61293.15172.51713.06791.75571.7592

picture of n-propyl bromide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 110.496 C1 C2 H7 109.198
C1 C2 H8 109.198 C2 C1 Br4 110.871
C2 C1 H5 111.708 C2 C1 H6 111.708
C2 C3 H9 110.427 C2 C3 H10 110.833
C2 C3 H11 110.833 C3 C2 H7 110.069
C3 C2 H8 110.069 Br4 C1 H5 106.136
Br4 C1 H6 106.136 H5 C1 H6 109.993
H7 C2 H8 107.758 H9 C3 H10 108.133
H9 C3 H11 108.133 H10 C3 H11 108.385
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.431      
2 C -0.448      
3 C -0.594      
4 Br -0.122      
5 H 0.252      
6 H 0.252      
7 H 0.233      
8 H 0.233      
9 H 0.216      
10 H 0.204      
11 H 0.204      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.323 1.865 0.000 2.286
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -39.012 0.001 0.000
y 0.001 -37.922 0.000
z 0.000 0.000 -38.814
Traceless
 xyz
x -0.644 0.001 0.000
y 0.001 0.991 0.000
z 0.000 0.000 -0.347
Polar
3z2-r2-0.694
x2-y2-1.090
xy0.001
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.990 1.691 0.000
y 1.691 7.524 0.000
z 0.000 0.000 5.369


<r2> (average value of r2) Å2
<r2> 207.469
(<r2>)1/2 14.404