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

using model chemistry: MP2/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-2651.726610
Energy at 298.15K 
HF Energy-2651.142528
Nuclear repulsion energy165.278046
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/cc-pVTZ
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' 3167 3007 14.05      
2 A' 3133 2975 8.98      
3 A' 3079 2923 14.90      
4 A' 1513 1437 2.04      
5 A' 1497 1421 1.36      
6 A' 1416 1344 4.63      
7 A' 1295 1230 45.01      
8 A' 1098 1042 0.04      
9 A' 993 943 11.91      
10 A' 613 582 10.14      
11 A' 292 278 1.25      
12 A" 3206 3044 8.06      
13 A" 3179 3019 3.44      
14 A" 1502 1426 9.04      
15 A" 1279 1215 0.41      
16 A" 1050 997 0.18      
17 A" 778 739 3.40      
18 A" 271 257 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 14680.0 cm-1
Scaled (by 0.9495) Zero Point Vibrational Energy (zpe) 13938.6 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/cc-pVTZ
ABC
1.01083 0.12860 0.11915

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.573 -2.010 0.000
C2 0.600 -1.057 0.000
Br3 0.000 0.786 0.000
H4 1.218 -1.169 0.884
H5 1.218 -1.169 -0.884
H6 -0.209 -3.038 0.000
H7 -1.192 -1.863 0.882
H8 -1.192 -1.863 -0.882

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.51152.85442.16832.16831.09041.08731.0873
C21.51151.93801.08521.08522.13982.15362.1536
Br32.85441.93802.46722.46723.82983.03583.0358
H42.16831.08522.46721.76872.51312.50903.0681
H52.16831.08522.46721.76872.51313.06812.5090
H61.09042.13983.82982.51312.51311.76771.7677
H71.08732.15363.03582.50903.06811.76771.7631
H81.08732.15363.03583.06812.50901.76771.7631

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 111.080 C1 C2 H4 112.195
C1 C2 H5 112.195 C2 C1 H6 109.592
C2 C1 H7 110.879 C2 C1 H8 110.879
Br3 C2 H4 105.916 Br3 C2 H5 105.916
H4 C2 H5 109.163 H6 C1 H7 108.537
H6 C1 H8 108.537 H7 C1 H8 108.348
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability