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All results from a given calculation for CH2C(CH3)CH3 (1-Propene, 2-methyl-)

using model chemistry: MP2/CEP-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/CEP-31G
 hartrees
Energy at 0K-26.840664
Energy at 298.15K-26.848410
HF Energy-26.514239
Nuclear repulsion energy65.952328
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/CEP-31G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3136 3031 34.77      
2 A1 3134 3029 36.42      
3 A1 3019 2917 46.54      
4 A1 1683 1626 7.99      
5 A1 1532 1480 12.33      
6 A1 1471 1421 1.05      
7 A1 1450 1401 0.28      
8 A1 1098 1061 4.19      
9 A1 801 774 0.05      
10 A1 365 353 0.14      
11 A2 3104 2999 0.00      
12 A2 1497 1447 0.00      
13 A2 1042 1006 0.00      
14 A2 696 673 0.00      
15 A2 155 150 0.00      
16 B1 3107 3002 104.10      
17 B1 1508 1457 24.09      
18 B1 1126 1088 0.00      
19 B1 821 793 84.70      
20 B1 418 404 8.30      
21 B1 195 189 0.49      
22 B2 3227 3118 40.77      
23 B2 3131 3026 37.22      
24 B2 3017 2916 45.10      
25 B2 1521 1470 4.38      
26 B2 1448 1399 11.58      
27 B2 1313 1269 6.46      
28 B2 986 953 0.37      
29 B2 977 944 0.08      
30 B2 421 407 0.84      

Unscaled Zero Point Vibrational Energy (zpe) 23699.6 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 22900.9 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 MP2/CEP-31G
ABC
0.28690 0.26485 0.14542

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.118
C2 0.000 0.000 1.510
H3 0.000 0.941 2.083
H4 0.000 -0.941 2.083
C5 0.000 1.313 -0.702
C6 0.000 -1.313 -0.702
H7 0.000 2.202 -0.038
H8 0.897 1.363 -1.359
H9 -0.897 1.363 -1.359
H10 0.000 -2.202 -0.038
H11 -0.897 -1.363 -1.359
H12 0.897 -1.363 -1.359

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 H7 H8 H9 H10 H11 H12
C11.39152.17812.17811.54801.54802.20762.20152.20152.20762.20152.2015
C21.39151.10161.10162.57212.57212.69173.30093.30092.69173.30093.3009
H32.17811.10161.88192.80933.58242.46733.58213.58213.79164.23814.2381
H42.17811.10161.88193.58242.80933.79164.23814.23812.46733.58213.5821
C51.54802.57212.80933.58242.62551.10981.11321.11323.57702.89772.8977
C61.54802.57213.58242.80932.62553.57702.89772.89771.10981.11321.1132
H72.20762.69172.46733.79161.10983.57701.80411.80414.40413.90653.9065
H82.20153.30093.58214.23811.11322.89771.80411.79373.90653.26322.7261
H92.20153.30093.58214.23811.11322.89771.80411.79373.90652.72613.2632
H102.20762.69173.79162.46733.57701.10984.40413.90653.90651.80411.8041
H112.20153.30094.23813.58212.89771.11323.90653.26322.72611.80411.7937
H122.20153.30094.23813.58212.89771.11323.90652.72613.26321.80411.7937

picture of 1-Propene, 2-methyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H3 121.330 C1 C2 H4 121.330
C1 C5 H7 111.257 C1 C5 H8 110.569
C1 C5 H9 110.569 C1 C6 H10 111.257
C1 C6 H11 110.569 C1 C6 H12 110.569
C2 C1 C5 122.000 C2 C1 C6 122.000
H3 C2 H4 117.339 C5 C1 C6 116.000
H7 C5 H8 108.494 H7 C5 H9 108.494
H8 C5 H9 107.337 H10 C6 H11 108.494
H10 C6 H12 108.494 H11 C6 H12 107.337
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability