return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CH2BrCH2Cl (1-bromo-2-chloroethane)

using model chemistry: G3

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
1 2 no C1 1A

Conformer 1 (CS)

Jump to S1C2
Energy calculated at G3
 hartrees
Energy at 0K-3112.155805
Energy at 298.15K-3112.149722
HF Energy-3109.655076
Nuclear repulsion energy288.636299
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 HF/6-31G*
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' 3318 3126 13.11 35.38 0.10 0.17
2 A' 3308 3117 4.45 110.74 0.10 0.19
3 A' 1641 1546 0.28 16.17 0.75 0.85
4 A' 1634 1539 7.96 0.55 0.75 0.86
5 A' 1472 1387 3.33 14.70 0.53 0.69
6 A' 1365 1286 72.90 2.87 0.44 0.61
7 A' 1139 1073 1.53 7.73 0.72 0.84
8 A' 807 760 38.36 51.33 0.32 0.48
9 A' 686 646 86.26 12.37 0.28 0.44
10 A' 267 252 1.07 7.06 0.32 0.48
11 A' 213 201 8.31 0.30 0.29 0.45
12 A" 3396 3199 3.06 9.83 0.75 0.86
13 A" 3371 3176 0.90 91.64 0.75 0.86
14 A" 1419 1337 0.06 10.51 0.75 0.86
15 A" 1246 1174 1.72 0.28 0.75 0.86
16 A" 1071 1009 0.26 7.61 0.75 0.86
17 A" 825 778 2.43 0.03 0.75 0.86
18 A" 119 113 7.58 0.02 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 13647.4 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 12858.6 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=FULL/6-31G*
ABC
0.95789 0.03292 0.03221

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.654 0.000
C2 1.230 -0.223 0.000
Br3 -1.586 -0.490 0.000
Cl4 2.689 0.807 0.000
H5 -0.057 1.274 0.893
H6 -0.057 1.274 -0.893
H7 1.262 -0.853 0.889
H8 1.262 -0.853 -0.889

Atom - Atom Distances (Å)
  C1 C2 Br3 Cl4 H5 H6 H7 H8
C11.51081.95522.69321.08871.08872.15682.1568
C21.51082.82861.78602.16712.16711.08961.0896
Br31.95522.82864.46722.49952.49953.00523.0052
Cl42.69321.78604.46722.92462.92462.36272.3627
H51.08872.16712.49952.92461.78542.50283.0720
H61.08872.16712.49952.92461.78543.07202.5028
H72.15681.08963.00522.36272.50283.07201.7774
H82.15681.08963.00522.36273.07202.50281.7774

picture of 1-bromo-2-chloroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 Cl4 109.274 C1 C2 H7 111.624
C1 C2 H8 111.624 C2 C1 Br3 109.483
C2 C1 Cl4 38.798 C2 C1 H6 111.871
Br3 C1 H5 106.644 Br3 C1 H6 106.644
Cl4 C2 H7 107.238 Cl4 C2 H8 107.238
H5 C1 H6 110.056 H7 C2 H8 109.649
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1)

Jump to S1C1
Energy calculated at G3
 hartrees
Energy at 0K-3112.153630
Energy at 298.15K-3112.147704
HF Energy-3109.651413
Nuclear repulsion energy303.498450
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 HF/6-31G*
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 3373 3178 3.12 41.18 0.75 0.86
2 A 3352 3158 2.51 84.64 0.75 0.86
3 A 3299 3108 21.02 139.70 0.06 0.11
4 A 3279 3089 11.81 85.84 0.29 0.45
5 A 1628 1533 0.81 7.42 0.75 0.85
6 A 1617 1524 8.00 15.94 0.75 0.85
7 A 1481 1396 37.71 1.85 0.75 0.86
8 A 1432 1350 71.22 1.88 0.48 0.65
9 A 1337 1260 3.53 14.74 0.74 0.85
10 A 1259 1186 1.57 5.36 0.72 0.84
11 A 1124 1059 1.55 4.62 0.69 0.82
12 A 1019 960 10.84 6.34 0.46 0.63
13 A 956 900 20.70 2.12 0.69 0.82
14 A 730 688 33.00 15.72 0.42 0.59
15 A 612 576 21.79 23.31 0.22 0.36
16 A 417 393 9.78 2.96 0.69 0.82
17 A 259 244 1.36 1.17 0.31 0.47
18 A 107 100 0.83 1.49 0.73 0.84

Unscaled Zero Point Vibrational Energy (zpe) 13640.0 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 12851.6 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=FULL/6-31G*
ABC
0.29088 0.05079 0.04519

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.012 1.120 -0.381
C2 1.285 0.901 0.401
Br3 -1.336 -0.226 0.036
Cl4 2.129 -0.585 -0.088
H5 -0.426 2.084 -0.119
H6 0.183 1.069 -1.455
H7 1.965 1.737 0.220
H8 1.077 0.832 1.469

Atom - Atom Distances (Å)
  C1 C2 Br3 Cl4 H5 H6 H7 H8
C11.51051.94982.73481.09101.08932.13452.1544
C21.51052.87651.77802.14432.16551.09291.0901
Br31.94982.87653.48662.48782.49233.84492.9997
Cl42.73481.77803.48663.69562.89742.34862.3541
H51.09102.14432.48783.69561.78552.43922.5196
H61.08932.16552.49232.89741.78552.53463.0674
H72.13451.09293.84492.34862.43922.53461.7800
H82.15441.09012.99972.35412.51963.06741.7800

picture of 1-bromo-2-chloroethane state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 Cl4 113.042 C1 C2 H7 108.767
C1 C2 H8 111.649 C2 C1 Br3 113.243
C2 C1 Cl4 36.588 C2 C1 H6 111.790
Br3 C1 H5 105.822 Br3 C1 H6 106.659
Cl4 C2 H7 106.553 Cl4 C2 H8 107.449
H5 C1 H6 109.706 H7 C2 H8 109.205
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability