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

using model chemistry: CCSD(T)/Def2TZVPP

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)/Def2TZVPP
 hartrees
Energy at 0K-2651.785575
Energy at 298.15K 
HF Energy-2651.097908
Nuclear repulsion energy164.298205
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)/Def2TZVPP
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' 3120 3120        
2 A' 3103 3103        
3 A' 3043 3043        
4 A' 1503 1503        
5 A' 1488 1488        
6 A' 1417 1417        
7 A' 1288 1288        
8 A' 1085 1085        
9 A' 983 983        
10 A' 592 592        
11 A' 288 288        
12 A" 3169 3169        
13 A" 3132 3132        
14 A" 1492 1492        
15 A" 1272 1272        
16 A" 1041 1041        
17 A" 769 769        
18 A" 260 260        

Unscaled Zero Point Vibrational Energy (zpe) 14521.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 14521.8 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)/Def2TZVPP
ABC
1.00531 0.12683 0.11759

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.575 -2.024 0.000
C2 0.601 -1.067 0.000
Br3 0.000 0.791 0.000
H4 1.220 -1.174 0.887
H5 1.220 -1.174 -0.887
H6 -0.206 -3.053 0.000
H7 -1.196 -1.878 0.884
H8 -1.196 -1.878 -0.884

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.51702.87392.17552.17551.09331.09011.0901
C21.51701.95311.08681.08682.14452.16062.1606
Br32.87391.95312.47792.47793.85033.05543.0554
H42.17551.08682.47791.77372.52042.51613.0770
H52.17551.08682.47791.77372.52043.07702.5161
H61.09332.14453.85032.52042.52041.77281.7728
H71.09012.16063.05542.51613.07701.77281.7687
H81.09012.16063.05543.07702.51611.77281.7687

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 111.205 C1 C2 H4 112.285
C1 C2 H5 112.285 C2 C1 H6 109.412
C2 C1 H7 110.882 C2 C1 H8 110.882
Br3 C2 H4 105.637 Br3 C2 H5 105.637
H4 C2 H5 109.376 H6 C1 H7 108.581
H6 C1 H8 108.581 H7 C1 H8 108.440
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability