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

using model chemistry: CBS-Q

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CBS-Q
 hartrees
Energy at 0K-2691.151989
Energy at 298.15K-2691.145598
HF Energy-2687.661770
Nuclear repulsion energy251.458660
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 CBS-Q
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3306 3306 42.86      
2 A' 3283 3283 16.21      
3 A' 3263 3263 25.18      
4 A' 3194 3194 39.97      
5 A' 1640 1640 5.65      
6 A' 1630 1630 5.52      
7 A' 1562 1562 2.87      
8 A' 1378 1378 66.51      
9 A' 1286 1286 28.77      
10 A' 1156 1156 8.48      
11 A' 948 948 9.94      
12 A' 590 590 32.15      
13 A' 430 430 2.17      
14 A' 322 322 2.60      
15 A' 286 286 0.69      
16 A" 3290 3290 17.05      
17 A" 3260 3260 5.18      
18 A" 3188 3188 15.87      
19 A" 1620 1620 1.41      
20 A" 1619 1619 1.08      
21 A" 1550 1550 5.28      
22 A" 1480 1480 0.54      
23 A" 1228 1228 0.62      
24 A" 1032 1032 0.01      
25 A" 1019 1019 1.23      
26 A" 312 312 0.72      
27 A" 265 265 0.05      

Unscaled Zero Point Vibrational Energy (zpe) 22068.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 22068.5 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 CBS-Q
ABC
0.26740 0.09823 0.07715

See section I.F.4 to change rotational constant units
Geometric Data calculated at CBS-Q

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.910 -0.422 0.000
Br2 -0.675 0.746 0.000
H3 1.737 0.276 0.000
C4 0.910 -1.254 1.274
C5 0.910 -1.254 -1.274
H6 0.045 -1.911 1.310
H7 1.809 -1.871 1.300
H8 0.902 -0.625 2.158
H9 0.045 -1.911 -1.310
H10 1.809 -1.871 -1.300
H11 0.902 -0.625 -2.158

Atom - Atom Distances (Å)
  C1 Br2 H3 C4 C5 H6 H7 H8 H9 H10 H11
C11.97001.08181.52141.52142.16322.14362.16722.16322.14362.1672
Br21.97002.45782.85312.85313.04863.83553.00373.04863.83553.0037
H31.08182.45782.15562.15563.05902.51022.48283.05902.51022.4828
C41.52142.85312.15562.54741.08661.09001.08542.80262.79483.4887
C51.52142.85312.15562.54742.80262.79483.48871.08661.09001.0854
H62.16323.04863.05901.08662.80261.76461.76232.61983.15043.7962
H72.14363.83552.51021.09002.79481.76461.76403.15042.59983.7857
H82.16723.00372.48281.08543.48871.76231.76403.79623.78574.3154
H92.16323.04863.05902.80261.08662.61983.15043.79621.76461.7623
H102.14363.83552.51022.79481.09003.15042.59983.78571.76461.7640
H112.16723.00372.48283.48871.08543.79623.78574.31541.76231.7640

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 110.984 C1 C4 H7 109.227
C1 C4 H8 111.381 C1 C5 H9 110.984
C1 C5 H10 109.227 C1 C5 H11 111.381
Br2 C1 H3 103.429 Br2 C1 C4 108.933
Br2 C1 C5 108.933 H3 C1 C4 110.662
H3 C1 C5 110.662 C4 C1 C5 113.692
H6 C4 H7 108.332 H6 C4 H8 108.463
H7 C4 H8 108.368 H9 C5 H10 108.332
H9 C5 H11 108.463 H10 C5 H11 108.368
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability