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All results from a given calculation for CH3CH2CH2Br (n-propyl bromide)

using model chemistry: QCISD/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 QCISD/3-21G
 hartrees
Energy at 0K-2677.449738
Energy at 298.15K-2677.460195
HF Energy-2677.090522
Nuclear repulsion energy231.425141
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 QCISD/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' 3096 3001 26.79      
2 A' 3092 2996 16.19      
3 A' 3050 2956 7.13      
4 A' 3024 2931 18.54      
5 A' 1581 1532 6.43      
6 A' 1569 1521 2.10      
7 A' 1544 1496 3.45      
8 A' 1478 1432 5.96      
9 A' 1407 1364 3.85      
10 A' 1303 1263 37.55      
11 A' 1132 1097 4.31      
12 A' 1011 980 2.86      
13 A' 901 873 6.30      
14 A' 659 639 15.10      
15 A' 307 298 1.28      
16 A' 214 207 1.18      
17 A" 3158 3060 14.09      
18 A" 3098 3003 30.92      
19 A" 3075 2981 2.38      
20 A" 1578 1529 7.84      
21 A" 1374 1332 0.00      
22 A" 1295 1255 0.13      
23 A" 1097 1063 2.01      
24 A" 881 854 0.01      
25 A" 761 738 5.48      
26 A" 246 239 0.04      
27 A" 116 113 0.61      

Unscaled Zero Point Vibrational Energy (zpe) 21022.9 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 20375.4 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 QCISD/3-21G
ABC
0.82493 0.05224 0.05055

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.866 0.000
C2 1.530 0.705 0.000
C3 2.216 2.102 0.000
Br4 -0.932 -0.926 0.000
H5 -0.350 1.387 0.896
H6 -0.350 1.387 -0.896
H7 1.836 0.134 0.888
H8 1.836 0.134 -0.888
H9 3.310 1.994 0.000
H10 1.924 2.675 -0.892
H11 1.924 2.675 0.892

Atom - Atom Distances (Å)
  C1 C2 C3 Br4 H5 H6 H7 H8 H9 H10 H11
C11.53822.53712.02031.09381.09382.16692.16693.49692.78722.7872
C21.53821.55622.95282.19102.19101.09901.09902.19802.19822.1982
C32.53711.55624.36762.81022.81022.19202.19201.09931.10001.1000
Br42.02032.95284.36762.54802.54803.09383.09385.14984.68184.6818
H51.09382.19102.81022.54801.79232.51953.08703.81653.16652.6131
H61.09382.19102.81022.54801.79233.08702.51953.81652.61313.1665
H72.16691.09902.19203.09382.51953.08701.77502.53403.10372.5427
H82.16691.09902.19203.09383.08702.51951.77502.53402.54273.1037
H93.49692.19801.09935.14983.81653.81652.53402.53401.78351.7835
H102.78722.19821.10004.68183.16652.61313.10372.54271.78351.7843
H112.78722.19821.10004.68182.61313.16652.54273.10371.78351.7843

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 110.147 C1 C2 H7 109.374
C1 C2 H8 109.374 C2 C1 Br4 111.436
C2 C1 H5 111.584 C2 C1 H6 111.584
C2 C3 H9 110.555 C2 C3 H10 110.525
C2 C3 H11 110.525 C3 C2 H7 110.093
C3 C2 H8 110.093 Br4 C1 H5 105.953
Br4 C1 H6 105.953 H5 C1 H6 110.040
H7 C2 H8 107.718 H9 C3 H10 108.381
H9 C3 H11 108.381 H10 C3 H11 108.397
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability