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All results from a given calculation for C2H5Br (Ethyl bromide)

using model chemistry: MP2=FULL/cc-pVTZ-PP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2=FULL/cc-pVTZ-PP
 hartrees
Energy at 0K-494.842936
Energy at 298.15K 
HF Energy-494.187643
Nuclear repulsion energy129.118128
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 MP2=FULL/cc-pVTZ-PP
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' 3171 3171 16.20 63.54 0.59 0.74
2 A' 3150 3150 5.81 114.07 0.15 0.25
3 A' 3096 3096 14.90 164.39 0.04 0.08
4 A' 1524 1524 2.14 4.81 0.75 0.86
5 A' 1508 1508 1.40 7.87 0.74 0.85
6 A' 1424 1424 5.62 1.17 0.75 0.86
7 A' 1302 1302 43.76 3.18 0.57 0.73
8 A' 1106 1106 0.02 3.76 0.22 0.36
9 A' 1001 1001 11.82 3.72 0.74 0.85
10 A' 616 616 9.55 15.97 0.21 0.34
11 A' 293 293 1.19 1.97 0.39 0.56
12 A" 3207 3207 7.89 13.45 0.75 0.86
13 A" 3181 3181 2.99 83.67 0.75 0.86
14 A" 1513 1513 9.60 7.41 0.75 0.86
15 A" 1287 1287 0.37 1.70 0.75 0.86
16 A" 1054 1054 0.20 2.89 0.75 0.86
17 A" 783 783 3.45 0.06 0.75 0.86
18 A" 284 284 0.01 0.03 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14750.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 14750.2 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/cc-pVTZ-PP
ABC
1.01708 0.12970 0.12016

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/cc-pVTZ-PP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.572 -2.001 0.000
C2 0.598 -1.054 0.000
Br3 0.000 0.783 0.000
H4 1.214 -1.165 0.882
H5 1.214 -1.165 -0.882
H6 -0.211 -3.027 0.000
H7 -1.188 -1.851 0.879
H8 -1.188 -1.851 -0.879

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.50502.84172.15982.15981.08701.08391.0839
C21.50501.93151.08101.08102.13252.14422.1442
Br32.84171.93152.45802.45803.81523.02003.0200
H42.15981.08102.45801.76342.50532.49783.0560
H52.15981.08102.45801.76342.50533.05602.4978
H61.08702.13253.81522.50532.50531.76281.7628
H71.08392.14423.02002.49783.05601.76281.7579
H81.08392.14423.02003.05602.49781.76281.7579

picture of Ethyl bromide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 Br3 110.960 C1 C2 H4 112.224
C1 C2 H5 112.224 C2 C1 H6 109.656
C2 C1 H7 110.786 C2 C1 H8 110.786
Br3 C2 H4 105.879 Br3 C2 H5 105.879
H4 C2 H5 109.294 H6 C1 H7 108.589
H6 C1 H8 108.589 H7 C1 H8 108.373
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability