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

using model chemistry: B2PLYP=FULL/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 B2PLYP=FULL/3-21G
 hartrees
Energy at 0K-2639.986542
Energy at 298.15K 
HF Energy-2639.910499
Nuclear repulsion energy161.255789
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 B2PLYP=FULL/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' 3158 3006 24.28      
2 A' 3142 2992 0.67      
3 A' 3078 2931 13.91      
4 A' 1586 1510 3.98      
5 A' 1555 1480 4.74      
6 A' 1488 1417 6.55      
7 A' 1334 1270 54.73      
8 A' 1099 1046 2.81      
9 A' 993 946 14.62      
10 A' 570 542 13.00      
11 A' 289 275 2.07      
12 A" 3219 3064 11.02      
13 A" 3167 3015 8.07      
14 A" 1574 1498 8.82      
15 A" 1327 1263 0.81      
16 A" 1072 1020 0.03      
17 A" 799 760 7.15      
18 A" 260 248 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 14853.9 cm-1
Scaled (by 0.952) Zero Point Vibrational Energy (zpe) 14140.9 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 B2PLYP=FULL/3-21G
ABC
0.98655 0.12164 0.11291

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.582 -2.060 0.000
C2 0.611 -1.107 0.000
Br3 0.000 0.810 0.000
H4 1.224 -1.216 0.891
H5 1.224 -1.216 -0.891
H6 -0.220 -3.094 0.000
H7 -1.200 -1.906 0.886
H8 -1.200 -1.906 -0.886

Atom - Atom Distances (Å)
  C1 C2 Br3 H4 H5 H6 H7 H8
C11.52642.92812.18362.18361.09551.09151.0915
C21.52642.01161.08721.08722.15352.16832.1683
Br32.92812.01162.52892.52893.90993.09833.0983
H42.18361.08722.52891.78152.53112.52053.0840
H52.18361.08722.52891.78152.53113.08402.5205
H61.09552.15353.90992.53112.53111.77701.7770
H71.09152.16833.09832.52053.08401.77701.7728
H81.09152.16833.09833.08402.52051.77701.7728

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 110.963 C1 C2 H4 112.239
C1 C2 H5 112.239 C2 C1 H6 109.340
C2 C1 H7 110.740 C2 C1 H8 110.740
Br3 C2 H4 105.472 Br3 C2 H5 105.472
H4 C2 H5 110.033 H6 C1 H7 108.688
H6 C1 H8 108.688 H7 C1 H8 108.593
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability