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 CHClCHCH2CH3 ((Z)-1-Chloro-1-butene)

using model chemistry: MP2/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/3-21G*
 hartrees
Energy at 0K-612.559259
Energy at 298.15K-612.566491
HF Energy-612.063186
Nuclear repulsion energy201.953185
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 MP2/3-21G*
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' 3269 3110 5.52      
2 A' 3189 3034 4.58      
3 A' 3161 3007 24.70      
4 A' 3088 2937 13.50      
5 A' 3076 2926 14.34      
6 A' 1680 1598 18.15      
7 A' 1609 1531 5.68      
8 A' 1578 1501 2.09      
9 A' 1493 1421 6.74      
10 A' 1420 1350 17.85      
11 A' 1382 1314 1.99      
12 A' 1331 1266 3.08      
13 A' 1119 1064 0.37      
14 A' 1065 1013 1.12      
15 A' 876 834 5.36      
16 A' 828 787 52.78      
17 A' 527 501 3.05      
18 A' 335 319 1.37      
19 A' 194 184 0.43      
20 A" 3164 3010 25.70      
21 A" 3108 2956 8.98      
22 A" 1603 1525 6.73      
23 A" 1362 1296 0.00      
24 A" 1175 1117 1.00      
25 A" 1001 952 49.44      
26 A" 872 830 9.80      
27 A" 758 721 0.49      
28 A" 311 295 0.55      
29 A" 204 194 0.34      
30 A" 127 121 0.64      

Unscaled Zero Point Vibrational Energy (zpe) 22452.0 cm-1
Scaled (by 0.9513) Zero Point Vibrational Energy (zpe) 21358.6 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 MP2/3-21G*
ABC
0.46746 0.05226 0.04785

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.947 -1.671 0.000
H2 2.505 -2.613 0.000
H3 2.234 -1.102 0.890
H4 2.234 -1.102 -0.890
C5 0.424 -1.959 0.000
H6 0.170 -2.563 -0.882
H7 0.170 -2.563 0.882
C8 0.000 0.539 0.000
Cl9 -1.076 1.933 0.000
H10 1.045 0.816 0.000
C11 -0.459 -0.717 0.000
H12 -1.534 -0.888 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 C8 Cl9 H10 C11 H12
C11.09491.09491.09491.54962.17482.17482.94524.70442.64522.58793.5679
H21.09491.77521.77522.18112.49632.49634.02615.78753.72663.51844.3920
H31.09491.77521.78032.19103.08742.52852.91064.57792.42482.86143.8770
H41.09491.77521.78032.19102.52853.08742.91064.57792.42482.86143.8770
C51.54962.18112.19102.19101.09841.09842.53344.17122.84301.52392.2321
H62.17482.49633.08742.52851.09841.76313.22884.74793.59942.14002.5469
H72.17482.49632.52853.08741.09841.76313.22884.74793.59942.14002.5469
C82.94524.02612.91062.91062.53343.22883.22881.76151.08121.33662.0945
Cl94.70445.78754.57794.57794.17124.74794.74791.76152.39802.72092.8574
H102.64523.72662.42482.42482.84303.59943.59941.08122.39802.14693.0906
C112.58793.51842.86142.86141.52392.14002.14001.33662.72092.14691.0888
H123.56794.39203.87703.87702.23212.54692.54692.09452.85743.09061.0888

picture of (Z)-1-Chloro-1-butene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C5 H6 109.242 C1 C5 H7 109.242
C1 C5 C11 114.706 H2 C1 H3 108.316
H2 C1 H4 108.316 H2 C1 C5 109.936
H3 C1 H4 108.770 H3 C1 C5 110.716
H4 C1 C5 110.716 C5 C11 C8 124.530
C5 C11 H12 116.383 H6 C5 H7 106.756
H6 C5 C11 108.300 H7 C5 C11 108.300
C8 C11 H12 119.087 Cl9 C8 H10 112.835
Cl9 C8 C11 122.266 H10 C8 C11 124.899
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability