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All results from a given calculation for C4H6(CH3)2 (1,1-dimethylcyclobutane)

using model chemistry: MP2=FULL/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 2 yes CS 1A'

Conformer 1 (C2V)

Jump to S1C2
Vibrational Frequencies calculated at MP2=FULL/6-311G**
Rotational Constants (cm-1) from geometry optimized at MP2=FULL/6-311G**
See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-311G**
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1
Energy calculated at MP2=FULL/6-311G**
 hartrees
Energy at 0K-235.249345
Energy at 298.15K-235.262947
Nuclear repulsion energy255.739680
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/6-311G**
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 3017 51.07      
2 A' 3157 2994 37.13      
3 A' 3153 2991 31.34      
4 A' 3148 2986 10.34      
5 A' 3114 2954 29.88      
6 A' 3088 2929 6.76      
7 A' 3061 2904 27.66      
8 A' 3056 2899 25.88      
9 A' 1529 1450 2.48      
10 A' 1522 1444 2.45      
11 A' 1511 1433 7.09      
12 A' 1496 1419 0.19      
13 A' 1427 1354 2.89      
14 A' 1414 1341 12.31      
15 A' 1338 1270 4.70      
16 A' 1327 1259 4.22      
17 A' 1253 1188 0.36      
18 A' 1222 1159 0.24      
19 A' 1036 983 0.55      
20 A' 1012 960 0.53      
21 A' 971 921 0.26      
22 A' 947 898 0.41      
23 A' 895 849 0.32      
24 A' 720 683 0.76      
25 A' 606 575 1.26      
26 A' 401 380 0.54      
27 A' 355 337 0.01      
28 A' 196 186 0.00      
29 A" 3153 2991 22.36      
30 A" 3148 2986 33.95      
31 A" 3143 2981 7.39      
32 A" 3084 2926 64.17      
33 A" 1522 1444 8.43      
34 A" 1499 1422 0.31      
35 A" 1490 1414 4.10      
36 A" 1289 1222 0.66      
37 A" 1266 1201 0.17      
38 A" 1236 1173 0.00      
39 A" 1198 1137 2.06      
40 A" 1098 1042 0.05      
41 A" 998 947 0.01      
42 A" 962 913 2.04      
43 A" 904 858 0.00      
44 A" 804 762 0.17      
45 A" 384 364 0.01      
46 A" 303 288 0.01      
47 A" 275 261 0.00      
48 A" 226 214 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 37057.5 cm-1
Scaled (by 0.9486) Zero Point Vibrational Energy (zpe) 35152.8 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 MP2=FULL/6-311G**
ABC
0.16734 0.10419 0.09498

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.111 0.401 0.000
C2 0.410 -1.705 0.000
C3 -0.111 -0.721 1.075
C4 -0.111 -0.721 -1.075
C5 1.206 1.169 0.000
C6 -1.294 1.352 0.000
H7 1.501 -1.766 0.000
H8 -0.001 -2.717 0.000
H9 0.497 -0.559 1.970
H10 0.497 -0.559 -1.970
H11 -1.134 -0.971 1.374
H12 -1.134 -0.971 -1.374
H13 2.066 0.491 0.000
H14 -2.238 0.797 0.000
H15 1.278 1.807 -0.888
H16 1.278 1.807 0.888
H17 -1.276 1.996 0.887
H18 -1.276 1.996 -0.887

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14 H15 H16 H17 H18
C12.16921.55341.55341.52431.51812.70013.12002.27462.27462.19482.19482.17882.16362.16632.16632.16552.1655
C22.16921.54751.54752.98193.49971.09241.09232.28112.28112.19302.19302.75093.64293.72493.72494.16254.1625
C31.55341.54752.14952.54142.61752.20082.27001.09473.10951.09512.66572.71352.82563.48832.88992.96223.5478
C41.55341.54752.14952.54142.61752.20082.27003.10951.09472.66571.09512.71352.82562.88993.48833.54782.9622
C51.52432.98192.54142.54142.50672.94924.06892.71472.71473.45583.45581.09473.46381.09581.09582.76272.7627
C61.51813.49972.61752.61752.50674.18694.26983.27783.27782.70382.70383.46861.09482.75812.75811.09621.0962
H72.70011.09242.20082.20082.94924.18691.77712.51902.51903.07573.07572.32714.53263.68823.68824.75904.7590
H83.12001.09232.27002.27004.06894.26981.77712.96452.96452.49422.49423.81664.16614.78434.78434.96274.9627
H92.27462.28111.09473.10952.71473.27782.51902.96453.94091.78533.74382.72893.63373.79162.71633.29364.2235
H102.27462.28113.10951.09472.71473.27782.51902.96453.94093.74381.78532.72893.63372.71633.79164.22353.2936
H112.19482.19301.09512.66573.45582.70383.07572.49421.78533.74382.74793.77732.49674.31843.71073.01023.7331
H122.19482.19302.66571.09513.45582.70383.07572.49423.74381.78532.74793.77732.49673.71074.31843.73313.0102
H132.17882.75092.71352.71351.09473.46862.32713.81662.72892.72893.77733.77734.31481.77231.77233.77113.7711
H142.16363.64292.82562.82563.46381.09484.53264.16613.63373.63372.49672.49674.31483.76363.76361.77441.7744
H152.16633.72493.48832.88991.09582.75813.68824.78433.79162.71634.31843.71071.77233.76361.77573.11552.5606
H162.16633.72492.88993.48831.09582.75813.68824.78432.71633.79163.71074.31841.77233.76361.77572.56063.1155
H172.16554.16252.96223.54782.76271.09624.75904.96273.29364.22353.01023.73313.77111.77443.11552.56061.7739
H182.16554.16253.54782.96222.76271.09624.75904.96274.22353.29363.73313.01023.77111.77442.56063.11551.7739

picture of 1,1-dimethylcyclobutane state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 C2 88.781 C1 C3 H9 117.351
C1 C3 H11 110.738 C1 C4 C2 88.781
C1 C4 H10 117.351 C1 C4 H12 110.738
C1 C5 H13 111.541 C1 C5 H15 110.467
C1 C5 H16 110.467 C1 C6 H14 110.756
C1 C6 H17 110.821 C1 C6 H18 110.821
C2 C3 H9 118.385 C2 C3 H11 111.016
C2 C4 H10 118.385 C2 C4 H12 111.016
C3 C1 C4 87.555 C3 C1 C5 111.325
C3 C1 C6 116.899 C3 C2 C4 87.976
C3 C2 H7 111.797 C3 C2 H8 117.582
C4 C1 C5 111.325 C4 C1 C6 116.899
C4 C2 H7 111.797 C4 C2 H8 117.582
C5 C1 C6 110.958 H7 C2 H8 108.873
H9 C3 H11 109.228 H10 C4 H12 109.228
H13 C5 H15 108.010 H13 C5 H16 108.010
H14 C6 H17 108.159 H14 C6 H18 108.159
H15 C5 H16 108.232 H17 C6 H18 108.016
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability