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

using model chemistry: CCSD(T)=FULL/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CCSD(T)=FULL/TZVP
 hartrees
Energy at 0K-2651.764244
Energy at 298.15K 
HF Energy-2651.089540
Nuclear repulsion energy163.400328
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 CCSD(T)=FULL/TZVP
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' 3130 2992        
2 A' 3116 2979        
3 A' 3049 2915        
4 A' 1508 1442        
5 A' 1498 1432        
6 A' 1440 1376        
7 A' 1316 1258        
8 A' 1094 1046        
9 A' 988 945        
10 A' 579 553        
11 A' 289 276        
12 A" 3188 3047        
13 A" 3144 3006        
14 A" 1499 1433        
15 A" 1281 1225        
16 A" 1051 1005        
17 A" 780 745        
18 A" 276 264        

Unscaled Zero Point Vibrational Energy (zpe) 14611.5 cm-1
Scaled (by 0.956) Zero Point Vibrational Energy (zpe) 13968.6 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 CCSD(T)=FULL/TZVP
ABC
1.00420 0.12516 0.11615

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)=FULL/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.575 -2.035 0.000
C2 0.602 -1.079 0.000
Br3 0.000 0.797 0.000
H4 1.219 -1.188 0.889
H5 1.219 -1.188 -0.889
H6 -0.203 -3.064 0.000
H7 -1.196 -1.891 0.885
H8 -1.196 -1.891 -0.885

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.51652.89042.17402.17401.09431.09091.0909
C21.51651.97011.08731.08732.14262.16232.1623
Br32.89041.97012.49312.49313.86703.07253.0725
H42.17401.08732.49311.77702.51662.51543.0778
H52.17401.08732.49311.77702.51663.07782.5154
H61.09432.14263.86702.51662.51661.77411.7741
H71.09092.16233.07252.51543.07781.77411.7700
H81.09092.16233.07253.07782.51541.77411.7700

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 111.326 C1 C2 H4 112.159
C1 C2 H5 112.159 C2 C1 H6 109.234
C2 C1 H7 110.995 C2 C1 H8 110.995
Br3 C2 H4 105.597 Br3 C2 H5 105.597
H4 C2 H5 109.601 H6 C1 H7 108.555
H6 C1 H8 108.555 H7 C1 H8 108.439
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability