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: CCSD(T)/6-31G(2df,p)

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 CCSD(T)/6-31G(2df,p)
 hartrees
Energy at 0K-3108.367288
Energy at 298.15K 
HF Energy-3107.632156
Nuclear repulsion energy290.000510
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)/6-31G(2df,p)
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' 200 200        
2 A' 255 255        
3 A' 681 681        
4 A' 772 772        
5 A' 1078 1078        
6 A' 1240 1240        
7 A' 1333 1333        
8 A' 1502 1502        
9 A' 1506 1506        
10 A' 3132 3132        
11 A' 3140 3140        
12 A" 114 114        
13 A" 768 768        
14 A" 988 988        
15 A" 1139 1139        
16 A" 1302 1302        
17 A" 3193 3193        
18 A" 3214 3214        

Unscaled Zero Point Vibrational Energy (zpe) 12777.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12777.9 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 CCSD(T)/6-31G(2df,p)
ABC
0.95309 0.03307 0.03236

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.646 0.000
C2 1.216 -0.264 0.000
Br3 -1.592 -0.448 0.000
Cl4 2.705 0.743 0.000
H5 -0.027 1.273 0.890
H6 -0.027 1.273 -0.890
H7 1.243 -0.892 0.891
H8 1.243 -0.892 -0.891

Atom - Atom Distances (Å)
  C1 C2 Br3 Cl4 H5 H6 H7 H8
C11.51871.93152.70641.08941.08942.16832.1683
C21.51872.81371.79752.16782.16781.08981.0898
Br31.93152.81374.45852.49092.49093.00403.0040
Cl42.70641.79754.45852.92122.92122.36712.3671
H51.08942.16782.49092.92121.78062.50953.0772
H61.08942.16782.49092.92121.78063.07722.5095
H72.16831.08983.00402.36712.50953.07721.7811
H82.16831.08983.00402.36713.07722.50951.7811

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 109.105 C1 C2 H7 111.392
C1 C2 H8 111.392 C2 C1 Br3 108.690
C2 C1 Cl4 38.872 C2 C1 H6 111.379
Br3 C1 H5 107.816 Br3 C1 H6 107.816
Cl4 C2 H7 107.600 Cl4 C2 H8 107.600
H5 C1 H6 109.624 H7 C2 H8 109.601
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1)

Jump to S1C1
Energy calculated at CCSD(T)/6-31G(2df,p)
 hartrees
Energy at 0K-3108.365054
Energy at 298.15K 
HF Energy-3107.628888
Nuclear repulsion energy307.091997
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)/6-31G(2df,p)
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 3192 3192        
2 A 3180 3180        
3 A 3120 3120        
4 A 3111 3111        
5 A 1492 1492        
6 A 1484 1484        
7 A 1344 1344        
8 A 1308 1308        
9 A 1221 1221        
10 A 1154 1154        
11 A 1054 1054        
12 A 951 951        
13 A 885 885        
14 A 699 699        
15 A 610 610        
16 A 392 392        
17 A 245 245        
18 A 104 104        

Unscaled Zero Point Vibrational Energy (zpe) 12772.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12772.1 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)/6-31G(2df,p)
ABC
0.29251 0.05076 0.04523

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/6-31G(2df,p)

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.009 1.106 -0.387
C2 1.271 0.908 0.406
Br3 -1.333 -0.227 0.037
Cl4 2.138 -0.579 -0.088
H5 -0.442 2.078 -0.140
H6 0.180 1.056 -1.459
H7 1.948 1.745 0.221
H8 1.068 0.829 1.474

Atom - Atom Distances (Å)
  C1 C2 Br3 Cl4 H5 H6 H7 H8
C11.51851.92612.74541.09191.08992.14672.1680
C21.51852.86471.79072.14442.16501.09231.0901
Br31.92612.86473.49082.47772.48473.83282.9915
Cl42.74541.79073.49083.70312.89482.35222.3594
H51.09192.14442.47773.70311.78092.43952.5384
H61.08992.16502.48472.89481.78092.53403.0726
H72.14671.09233.83282.35222.43952.53401.7840
H82.16801.09012.99152.35942.53843.07261.7840

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 111.856 C1 C2 H7 109.539
C1 C2 H8 111.363 C2 C1 Br3 111.996
C2 C1 Cl4 37.257 C2 C1 H6 111.132
Br3 C1 H5 107.101 Br3 C1 H6 107.695
Cl4 C2 H7 106.836 Cl4 C2 H8 107.465
H5 C1 H6 109.423 H7 C2 H8 109.654
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability