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All results from a given calculation for CH2BrCH2Br (Ethane, 1,2-dibromo-)

using model chemistry: CCD/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
1 2 no C2 1A

Conformer 1 (C2H)

Jump to S1C2
Energy calculated at CCD/aug-cc-pVTZ
 hartrees
Energy at 0K-5223.878743
Energy at 298.15K 
HF Energy-5223.023880
Nuclear repulsion energy420.311504
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 CCD/aug-cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at CCD/aug-cc-pVTZ
ABC
0.95474 0.01999 0.01972

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/aug-cc-pVTZ

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.490 0.573 0.000
C2 -0.490 -0.573 0.000
Br3 -0.490 2.247 0.000
Br4 0.490 -2.247 0.000
H5 1.112 0.572 0.888
H6 1.112 0.572 -0.888
H7 -1.112 -0.572 0.888
H8 -1.112 -0.572 -0.888

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 H5 H6 H7 H8
C11.50821.93952.82001.08451.08452.16052.1605
C21.50822.82001.93952.16052.16051.08451.0845
Br31.93952.82004.59932.48242.48243.02003.0200
Br42.82001.93954.59933.02003.02002.48242.4824
H51.08452.16052.48243.02001.77632.50153.0680
H61.08452.16052.48243.02001.77633.06802.5015
H72.16051.08453.02002.48242.50153.06801.7763
H82.16051.08453.02002.48243.06802.50151.7763

picture of Ethane, 1,2-dibromo- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 Br4 109.114 C1 C2 H7 111.835
C1 C2 H8 111.835 C2 C1 Br3 109.114
C2 C1 H5 111.835 C2 C1 H6 111.835
Br3 C1 H5 106.924 Br3 C1 H6 106.924
Br4 C2 H7 106.924 Br4 C2 H8 106.924
H5 C1 H6 109.963 H7 C2 H8 109.963
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2)

Jump to S1C1
Energy calculated at CCD/aug-cc-pVTZ
 hartrees
Energy at 0K-5223.875780
Energy at 298.15K 
HF Energy-5223.019684
Nuclear repulsion energy455.311869
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 CCD/aug-cc-pVTZ
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 3181 3044 0.08      
2 A 3123 2989 14.61      
3 A 1500 1436 0.37      
4 A 1342 1284 16.61      
5 A 1226 1174 0.72      
6 A 1065 1020 0.48      
7 A 936 896 5.42      
8 A 594 569 5.60      
9 A 230 220 0.98      
10 A 82 79 0.23      
11 B 3193 3055 0.65      
12 B 3116 2982 2.23      
13 B 1495 1430 11.06      
14 B 1318 1262 56.11      
15 B 1152 1102 1.47      
16 B 875 837 13.29      
17 B 631 603 9.85      
18 B 364 348 4.50      

Unscaled Zero Point Vibrational Energy (zpe) 12711.4 cm-1
Scaled (by 0.957) Zero Point Vibrational Energy (zpe) 12164.8 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 CCD/aug-cc-pVTZ
ABC
0.25622 0.03137 0.02878

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/aug-cc-pVTZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.311 0.688 1.175
C2 -0.311 -0.688 1.175
Br3 -0.311 1.781 -0.292
Br4 0.311 -1.781 -0.292
H5 0.033 1.216 2.083
H6 1.392 0.639 1.095
H7 -0.033 -1.216 2.083
H8 -1.392 -0.639 1.095

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 H5 H6 H7 H8
C11.50981.93252.87171.08721.08522.13732.1609
C21.50982.87171.93252.13732.16091.08721.0852
Br31.93252.87173.61622.46602.47603.83432.9917
Br42.87171.93253.61623.83432.99172.46602.4760
H51.08722.13732.46603.83431.77682.43272.5397
H61.08522.16092.47602.99171.77682.53973.0641
H72.13731.08723.83432.46602.43272.53971.7768
H82.16091.08522.99172.47602.53973.06411.7768

picture of Ethane, 1,2-dibromo- state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 Br4 112.495 C1 C2 H7 109.702
C1 C2 H8 111.713 C2 C1 Br3 112.495
C2 C1 H5 109.702 C2 C1 H6 111.713
Br3 C1 H5 106.089 Br3 C1 H6 106.890
Br4 C2 H7 106.089 Br4 C2 H8 106.890
H5 C1 H6 109.759 H7 C2 H8 109.759
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability