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All results from a given calculation for C6H5Br (bromobenzene)

using model chemistry: MP2/CEP-121G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/CEP-121G
 hartrees
Energy at 0K-49.419770
Energy at 298.15K-49.427651
Nuclear repulsion energy126.703662
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/CEP-121G
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' 3166 3090 10.55      
2 A' 3150 3075 23.71      
3 A' 3126 3051 0.03      
4 A' 1571 1533 28.38      
5 A' 1479 1444 27.95      
6 A' 1208 1179 0.04      
7 A' 1104 1077 4.53      
8 A' 1067 1042 17.94      
9 A' 1026 1002 27.43      
10 A' 983 959 1.74      
11 A' 894 872 3.99      
12 A' 740 722 32.67      
13 A' 696 679 76.51      
14 A' 664 648 16.10      
15 A' 437 426 10.37      
16 A' 297 290 1.12      
17 A' 156 152 0.82      
18 A" 3159 3084 28.40      
19 A" 3136 3060 11.49      
20 A" 1574 1537 2.13      
21 A" 1445 1411 6.94      
22 A" 1350 1317 0.72      
23 A" 1332 1300 0.38      
24 A" 1188 1160 0.15      
25 A" 1074 1048 3.42      
26 A" 961 938 5.08      
27 A" 834 814 0.10      
28 A" 614 599 0.26      
29 A" 393 383 0.05      
30 A" 236 230 0.04      

Unscaled Zero Point Vibrational Energy (zpe) 19528.5 cm-1
Scaled (by 0.976) Zero Point Vibrational Energy (zpe) 19059.8 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 MP2/CEP-121G
ABC
0.18123 0.03104 0.02651

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Br1 0.044 -1.862 0.000
C2 0.027 0.116 0.000
C3 -0.037 0.811 1.243
C4 -0.037 0.811 -1.243
C5 -0.037 2.241 1.235
C6 -0.037 2.241 -1.235
C7 -0.094 2.956 0.000
H8 0.011 0.260 2.185
H9 0.011 0.260 -2.185
H10 -0.082 2.780 2.186
H11 -0.082 2.780 -2.186
H12 -0.094 4.050 0.000

Atom - Atom Distances (Å)
  Br1 C2 C3 C4 C5 C6 C7 H8 H9 H10 H11 H12
Br11.97842.94942.94944.28574.28574.82053.04653.04655.13295.13295.9136
C21.97841.42581.42582.45862.45862.84282.19012.19013.44803.44803.9356
C32.94941.42582.48651.42962.86142.48001.09243.47292.18363.95473.4696
C42.94941.42582.48652.86141.42962.48003.47291.09243.95472.18363.4696
C54.28572.45861.42962.86142.47091.42882.19713.95311.09403.46412.1914
C64.28572.45862.86141.42962.47091.42883.95312.19713.46411.09402.1914
C74.82052.84282.48002.48001.42881.42883.47213.47212.19332.19331.0935
H83.04652.19011.09243.47292.19713.95313.47214.37072.52175.04674.3758
H93.04652.19013.47291.09243.95312.19713.47214.37075.04672.52174.3758
H105.13293.44802.18363.95471.09403.46412.19332.52175.04674.37232.5281
H115.13293.44803.95472.18363.46411.09402.19335.04672.52174.37232.5281
H125.91363.93563.46963.46962.19142.19141.09354.37584.37582.52812.5281

picture of bromobenzene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br1 C2 C3 119.201 Br1 C2 C4 119.201
C2 C3 C5 118.863 C2 C3 H8 120.271
C2 C4 C6 118.863 C2 C4 H9 120.271
C3 C2 C4 121.376 C3 C5 C7 120.366
C3 C5 H10 119.228 C4 C6 C7 120.366
C4 C6 H11 119.228 C5 C3 H8 120.604
C5 C7 C6 119.685 C5 C7 H12 120.050
C6 C4 H9 120.604 C6 C7 H12 120.050
C7 C5 H10 120.191 C7 C6 H11 120.191
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability