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All results from a given calculation for CH3CHBrCH3 (i-propyl bromide)

using model chemistry: MP2=FULL/3-21G

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/3-21G
 hartrees
Energy at 0K-2677.417251
Energy at 298.15K-2677.427844
HF Energy-2677.094611
Nuclear repulsion energy247.648943
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/3-21G
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' 3185 3041 29.58      
2 A' 3165 3022 14.85      
3 A' 3151 3009 4.98      
4 A' 3084 2945 18.52      
5 A' 1604 1532 8.83      
6 A' 1595 1523 7.08      
7 A' 1507 1439 5.10      
8 A' 1336 1276 43.39      
9 A' 1246 1189 25.38      
10 A' 1115 1064 6.59      
11 A' 902 861 5.12      
12 A' 569 543 9.20      
13 A' 417 398 0.72      
14 A' 309 295 1.07      
15 A' 274 262 0.55      
16 A" 3175 3032 10.40      
17 A" 3154 3012 4.17      
18 A" 3081 2942 8.85      
19 A" 1587 1515 2.38      
20 A" 1583 1512 1.99      
21 A" 1491 1424 10.26      
22 A" 1417 1353 1.10      
23 A" 1160 1108 2.62      
24 A" 1011 965 2.30      
25 A" 991 947 0.34      
26 A" 291 278 0.47      
27 A" 264 252 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 21331.5 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 20367.3 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/3-21G
ABC
0.26588 0.09320 0.07392

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.928 -0.436 0.000
Br2 -0.688 0.767 0.000
H3 1.775 0.252 0.000
C4 0.928 -1.288 1.276
C5 0.928 -1.288 -1.276
H6 0.046 -1.935 1.296
H7 1.828 -1.915 1.291
H8 0.921 -0.658 2.170
H9 0.046 -1.935 -1.296
H10 1.828 -1.915 -1.291
H11 0.921 -0.658 -2.170

Atom - Atom Distances (Å)
  C1 Br2 H3 C4 C5 H6 H7 H8 H9 H10 H11
C12.01441.09091.53411.53412.16952.15962.18112.16952.15962.1811
Br22.01442.51552.90872.90873.08543.89723.05403.08543.89723.0540
H31.09092.51552.17182.17183.07462.52322.50303.07462.52322.5030
C41.53412.90872.17182.55151.09421.09701.09352.79502.79103.5025
C51.53412.90872.17182.55152.79502.79103.50251.09421.09701.0935
H62.16953.08543.07461.09422.79501.78211.77742.59263.14143.7960
H72.15963.89722.52321.09702.79101.78211.78183.14142.58143.7916
H82.18113.05402.50301.09353.50251.77741.78183.79603.79164.3393
H92.16953.08543.07462.79501.09422.59263.14143.79601.78211.7774
H102.15963.89722.52322.79101.09703.14142.58143.79161.78211.7818
H112.18113.05402.50303.50251.09353.79603.79164.33931.77741.7818

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 110.134 C1 C4 H7 109.196
C1 C4 H8 111.098 C1 C5 H9 110.134
C1 C5 H10 109.196 C1 C5 H11 111.098
Br2 C1 H3 104.227 Br2 C1 C4 109.364
Br2 C1 C5 109.364 H3 C1 C4 110.514
H3 C1 C5 110.514 C4 C1 C5 112.521
H6 C4 H7 108.833 H6 C4 H8 108.675
H7 C4 H8 108.863 H9 C5 H10 108.833
H9 C5 H11 108.675 H10 C5 H11 108.863
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability