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 CH3CHBrCH3 (i-propyl bromide)

using model chemistry: MP2=FULL/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2=FULL/cc-pVDZ
 hartrees
Energy at 0K-2690.665433
Energy at 298.15K-2690.675994
HF Energy-2690.080250
Nuclear repulsion energy250.997574
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=FULL/cc-pVDZ
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' 3209 3050 14.89      
2 A' 3186 3028 26.73      
3 A' 3143 2987 4.73      
4 A' 3087 2933 21.26      
5 A' 1504 1429 6.51      
6 A' 1491 1417 8.65      
7 A' 1414 1344 3.86      
8 A' 1271 1208 42.64      
9 A' 1190 1131 20.27      
10 A' 1067 1014 8.13      
11 A' 924 878 5.06      
12 A' 581 552 11.94      
13 A' 407 386 1.02      
14 A' 313 297 0.78      
15 A' 279 265 0.62      
16 A" 3206 3047 8.25      
17 A" 3182 3024 1.25      
18 A" 3084 2931 12.29      
19 A" 1483 1410 0.52      
20 A" 1479 1406 2.01      
21 A" 1405 1335 9.15      
22 A" 1357 1290 0.58      
23 A" 1172 1114 0.94      
24 A" 963 915 0.03      
25 A" 937 890 1.21      
26 A" 294 279 0.56      
27 A" 261 248 0.05      

Unscaled Zero Point Vibrational Energy (zpe) 20944.2 cm-1
Scaled (by 0.9504) Zero Point Vibrational Energy (zpe) 19905.3 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/cc-pVDZ
ABC
0.26782 0.09696 0.07638

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.904 -0.426 0.000
Br2 -0.671 0.753 0.000
H3 1.757 0.270 0.000
C4 0.904 -1.265 1.269
C5 0.904 -1.265 -1.269
H6 0.018 -1.919 1.299
H7 1.807 -1.899 1.287
H8 0.901 -0.633 2.169
H9 0.018 -1.919 -1.299
H10 1.807 -1.899 -1.287
H11 0.901 -0.633 -2.169

Atom - Atom Distances (Å)
  C1 Br2 H3 C4 C5 H6 H7 H8 H9 H10 H11
C11.96691.10131.52181.52182.16842.15472.17922.16842.15472.1792
Br21.96692.47552.85742.85743.05043.85103.01633.05043.85103.0163
H31.10132.47552.16732.16733.08312.52242.50103.08312.52242.5010
C41.52182.85742.16732.53871.10141.10371.09972.79422.78453.4962
C51.52182.85742.16732.53872.79422.78453.49621.10141.10371.0997
H62.16843.05043.08311.10142.79421.78951.78642.59753.14473.8027
H72.15473.85102.52241.10372.78451.78951.78923.14472.57433.7908
H82.17923.01632.50101.09973.49621.78641.78923.80273.79084.3385
H92.16843.05043.08312.79421.10142.59753.14473.80271.78951.7864
H102.15473.85102.52242.78451.10373.14472.57433.79081.78951.7892
H112.17923.01632.50103.49621.09973.80273.79084.33851.78641.7892

picture of i-propyl bromide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C4 H6 110.477 C1 C4 H7 109.272
C1 C4 H8 111.439 C1 C5 H9 110.477
C1 C5 H10 109.272 C1 C5 H11 111.439
Br2 C1 H3 103.975 Br2 C1 C4 109.314
Br2 C1 C5 109.314 H3 C1 C4 110.398
H3 C1 C5 110.398 C4 C1 C5 113.043
H6 C4 H7 108.491 H6 C4 H8 108.503
H7 C4 H8 108.590 H9 C5 H10 108.491
H9 C5 H11 108.503 H10 C5 H11 108.590
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability