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

using model chemistry: MP3=FULL/6-31G*

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 MP3=FULL/6-31G*
Rotational Constants (cm-1) from geometry optimized at MP3=FULL/6-31G*
See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-31G*
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1
Energy calculated at MP3=FULL/6-31G*
 hartrees
Energy at 0K-235.042343
Energy at 298.15K-235.055976
HF Energy-234.169010
Nuclear repulsion energy255.298400
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 MP3=FULL/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3185 2989 58.44      
2 A' 3169 2974 41.95      
3 A' 3166 2971 21.61      
4 A' 3158 2963 13.48      
5 A' 3130 2937 24.54      
6 A' 3112 2920 8.18      
7 A' 3089 2898 23.66      
8 A' 3084 2893 22.56      
9 A' 1578 1481 1.97      
10 A' 1564 1468 2.62      
11 A' 1556 1460 6.63      
12 A' 1544 1449 0.01      
13 A' 1478 1387 2.59      
14 A' 1465 1375 11.79      
15 A' 1376 1291 6.87      
16 A' 1359 1275 1.23      
17 A' 1283 1204 0.65      
18 A' 1249 1172 0.16      
19 A' 1048 984 0.75      
20 A' 1025 962 0.48      
21 A' 987 926 0.42      
22 A' 960 901 0.47      
23 A' 909 853 0.43      
24 A' 735 690 0.94      
25 A' 624 586 1.25      
26 A' 408 383 0.36      
27 A' 362 340 0.02      
28 A' 174 163 0.00      
29 A" 3165 2970 52.63      
30 A" 3162 2967 0.27      
31 A" 3158 2963 9.40      
32 A" 3107 2915 58.23      
33 A" 1567 1471 6.50      
34 A" 1546 1451 0.58      
35 A" 1541 1446 3.61      
36 A" 1327 1245 0.16      
37 A" 1298 1218 0.55      
38 A" 1270 1191 0.33      
39 A" 1232 1156 2.37      
40 A" 1121 1052 0.05      
41 A" 1020 957 0.00      
42 A" 978 918 1.87      
43 A" 918 862 0.00      
44 A" 818 768 0.20      
45 A" 395 371 0.07      
46 A" 308 289 0.02      
47 A" 278 261 0.00      
48 A" 238 224 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 37610.3 cm-1
Scaled (by 0.9383) Zero Point Vibrational Energy (zpe) 35289.8 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 MP3=FULL/6-31G*
ABC
0.16659 0.10362 0.09461

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.096 0.402 0.000
C2 0.362 -1.725 0.000
C3 -0.096 -0.716 1.081
C4 -0.096 -0.716 -1.081
C5 1.210 1.189 0.000
C6 -1.293 1.341 0.000
H7 1.446 -1.875 0.000
H8 -0.121 -2.706 0.000
H9 0.560 -0.566 1.945
H10 0.560 -0.566 -1.945
H11 -1.107 -0.931 1.444
H12 -1.107 -0.931 -1.444
H13 2.078 0.520 0.000
H14 -2.232 0.777 0.000
H15 1.275 1.829 -0.888
H16 1.275 1.829 0.888
H17 -1.283 1.985 0.887
H18 -1.283 1.985 -0.887

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14 H15 H16 H17 H18
C12.17541.55481.55481.52561.52132.74973.10772.26942.26942.20962.20962.17772.16842.16952.16952.16882.1688
C22.17541.54801.54803.03523.48421.09391.09352.27272.27272.20802.20802.82593.60413.77493.77494.15464.1546
C31.55481.54802.16162.55072.61382.21122.26471.09543.09981.09542.72822.72502.82103.49772.89732.95703.5467
C41.55481.54802.16162.55072.61382.21122.26473.09981.09542.72821.09542.72502.82102.89733.49773.54672.9570
C51.52563.03522.55072.55072.50773.07344.11652.69972.69973.45703.45701.09593.46681.09611.09612.76332.7633
C61.52133.48422.61382.61382.50774.22424.21353.29443.29442.69832.69833.46951.09552.76082.76081.09661.0966
H72.74971.09392.21122.21123.07344.22421.77322.50622.50623.08143.08142.47744.53423.81243.81244.81004.8100
H83.10771.09352.26472.26474.11654.21351.77322.97072.97072.49212.49213.90444.07304.82714.82714.91414.9141
H92.26942.27271.09543.09982.69973.29442.50622.97073.89011.77843.79452.69623.65803.77812.71373.32054.2341
H102.26942.27273.09981.09542.69973.29442.50622.97073.89013.79451.77842.69623.65802.71373.77814.23413.3205
H112.20962.20801.09542.72823.45702.69833.08142.49211.77843.79452.88813.78652.50334.32783.68782.97413.7376
H122.20962.20802.72821.09543.45702.69833.08142.49213.79451.77842.88813.78652.50333.68784.32783.73762.9741
H132.17772.82592.72502.72501.09593.46952.47743.90442.69622.69623.78653.78654.31771.77331.77333.77233.7723
H142.16843.60412.82102.82103.46681.09554.53424.07303.65803.65802.50332.50334.31773.76783.76781.77441.7744
H152.16953.77493.49772.89731.09612.76083.81244.82713.77812.71374.32783.68781.77333.76781.77623.11782.5630
H162.16953.77492.89733.49771.09612.76083.81244.82712.71373.77813.68784.32781.77333.76781.77622.56303.1178
H172.16884.15462.95703.54672.76331.09664.81004.91413.32054.23412.97413.73763.77231.77443.11782.56301.7743
H182.16884.15463.54672.95702.76331.09664.81004.91414.23413.32053.73762.97413.77231.77442.56303.11781.7743

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 89.034 C1 C3 H9 116.748
C1 C3 H11 111.802 C1 C4 C2 89.034
C1 C4 H10 116.748 C1 C4 H12 111.802
C1 C5 H13 111.285 C1 C5 H15 110.612
C1 C5 H16 110.612 C1 C6 H14 110.866
C1 C6 H17 110.837 C1 C6 H18 110.837
C2 C3 H9 117.557 C2 C3 H11 112.162
C2 C4 H10 117.557 C2 C4 H12 112.162
C3 C1 C4 88.079 C3 C1 C5 111.791
C3 C1 C6 116.355 C3 C2 C4 88.567
C3 C2 H7 112.509 C3 C2 H8 116.997
C4 C1 C5 111.791 C4 C1 C6 116.355
C4 C2 H7 112.509 C4 C2 H8 116.997
C5 C1 C6 110.772 H7 C2 H8 108.321
H9 C3 H11 108.538 H10 C4 H12 108.538
H13 C5 H15 107.994 H13 C5 H16 107.994
H14 C6 H17 108.089 H14 C6 H18 108.089
H15 C5 H16 108.229 H17 C6 H18 108.006
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability