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

using model chemistry: G2

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at G2
 hartrees
Energy at 0K-2690.848542
Energy at 298.15K-2690.842051
HF Energy-2687.577495
Nuclear repulsion energy250.880554
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 3132 36.69      
2 A' 3299 3108 14.42      
3 A' 3275 3086 27.42      
4 A' 3209 3024 44.34      
5 A' 1649 1554 5.72      
6 A' 1639 1544 5.69      
7 A' 1576 1485 2.84      
8 A' 1381 1301 69.01      
9 A' 1294 1220 32.64      
10 A' 1160 1093 7.40      
11 A' 950 895 10.14      
12 A' 577 544 34.19      
13 A' 431 406 2.79      
14 A' 321 302 3.09      
15 A' 285 269 0.90      
16 A" 3303 3112 16.52      
17 A" 3272 3083 5.46      
18 A" 3202 3017 14.34      
19 A" 1630 1535 0.78      
20 A" 1628 1534 1.82      
21 A" 1564 1474 5.28      
22 A" 1492 1406 0.75      
23 A" 1236 1164 0.38      
24 A" 1039 979 0.01      
25 A" 1028 969 1.09      
26 A" 311 293 0.75      
27 A" 264 249 0.06      

Unscaled Zero Point Vibrational Energy (zpe) 22169.6 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 20888.2 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 MP2=FULL/6-31G*
ABC
0.26897 0.09716 0.07658

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.455 -0.902 0.000
Br2 -0.066 1.006 0.000
H3 1.546 -0.870 0.000
C4 -0.066 -1.550 1.267
C5 -0.066 -1.550 -1.267
H6 -1.158 -1.514 1.292
H7 0.250 -2.599 1.295
H8 0.318 -1.047 2.157
H9 -1.158 -1.514 -1.292
H10 0.250 -2.599 -1.295
H11 0.318 -1.047 -2.157

Atom - Atom Distances (Å)
  C1 Br2 H3 C4 C5 H6 H7 H8 H9 H10 H11
C11.97761.09161.51551.51552.15562.14432.16582.15562.14432.1658
Br21.97762.47372.85252.85253.03523.84293.00183.03523.84293.0018
H31.09162.47372.16032.16033.06542.51912.48833.06542.51912.4883
C41.51552.85252.16032.53411.09271.09551.09152.78282.78633.4816
C51.51552.85252.16032.53412.78282.78633.48161.09271.09551.0915
H62.15563.03523.06541.09272.78281.77661.77252.58473.13853.7802
H72.14433.84292.51911.09552.78631.77661.77633.13852.58993.7850
H82.16583.00182.48831.09153.48161.77251.77633.78023.78504.3132
H92.15563.03523.06542.78281.09272.58473.13853.78021.77661.7725
H102.14433.84292.51912.78631.09553.13852.58993.78501.77661.7763
H112.16583.00182.48833.48161.09153.78023.78504.31321.77251.7763

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 110.938 C1 C4 H7 109.236
C1 C4 H8 111.330 C1 C5 H9 110.938
C1 C5 H10 109.236 C1 C5 H11 111.330
Br2 C1 H3 103.172 Br2 C1 C4 108.941
Br2 C1 C5 108.941 H3 C1 C4 110.774
H3 C1 C5 110.774 C4 C1 C5 113.682
H6 C4 H7 108.380 H6 C4 H8 108.474
H7 C4 H8 108.400 H9 C5 H10 108.380
H9 C5 H11 108.474 H10 C5 H11 108.400
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability