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

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

Conformer 2 (CS)

Jump to S1C1
Energy calculated at CCD/6-31G*
 hartrees
Energy at 0K-235.021185
Energy at 298.15K-235.034791
Nuclear repulsion energy254.926120
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 CCD/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' 3160 2991 60.91      
2 A' 3146 2977 43.04      
3 A' 3142 2974 20.27      
4 A' 3133 2965 13.32      
5 A' 3104 2938 25.42      
6 A' 3087 2921 8.69      
7 A' 3064 2900 24.48      
8 A' 3058 2895 22.96      
9 A' 1570 1486 1.78      
10 A' 1556 1473 2.47      
11 A' 1548 1465 6.31      
12 A' 1536 1454 0.02      
13 A' 1470 1392 2.26      
14 A' 1458 1380 10.75      
15 A' 1370 1297 6.45      
16 A' 1353 1281 1.09      
17 A' 1277 1209 0.68      
18 A' 1244 1178 0.14      
19 A' 1044 988 0.70      
20 A' 1022 967 0.49      
21 A' 982 930 0.41      
22 A' 956 905 0.47      
23 A' 906 857 0.43      
24 A' 732 693 0.90      
25 A' 622 589 1.21      
26 A' 407 385 0.35      
27 A' 361 342 0.01      
28 A' 174 165 0.00      
29 A" 3141 2973 55.98      
30 A" 3137 2970 0.18      
31 A" 3134 2966 8.43      
32 A" 3082 2917 58.17      
33 A" 1559 1476 6.16      
34 A" 1538 1456 0.52      
35 A" 1533 1451 3.30      
36 A" 1322 1251 0.13      
37 A" 1292 1223 0.53      
38 A" 1265 1198 0.34      
39 A" 1226 1161 2.17      
40 A" 1115 1056 0.04      
41 A" 1016 961 0.00      
42 A" 974 922 1.85      
43 A" 915 866 0.00      
44 A" 815 772 0.20      
45 A" 394 373 0.07      
46 A" 307 290 0.02      
47 A" 276 261 0.00      
48 A" 236 223 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 37379.6 cm-1
Scaled (by 0.9465) Zero Point Vibrational Energy (zpe) 35379.8 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 CCD/6-31G*
ABC
0.16616 0.10332 0.09433

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.101 0.402 0.000
C2 0.373 -1.723 0.000
C3 -0.101 -0.719 1.079
C4 -0.101 -0.719 -1.079
C5 1.213 1.185 0.000
C6 -1.294 1.349 0.000
H7 1.462 -1.849 0.000
H8 -0.086 -2.718 0.000
H9 0.537 -0.569 1.959
H10 0.537 -0.569 -1.959
H11 -1.119 -0.945 1.422
H12 -1.119 -0.945 -1.422
H13 2.081 0.514 0.000
H14 -2.238 0.790 0.000
H15 1.282 1.826 -0.889
H16 1.282 1.826 0.889
H17 -1.281 1.996 0.888
H18 -1.281 1.996 -0.888

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14 H15 H16 H17 H18
C12.17771.55631.55631.52891.52322.74043.11992.27772.27772.20752.20752.18462.17202.17452.17452.17302.1730
C22.17771.54841.54843.02693.49571.09581.09552.27992.27992.20322.20322.81473.62443.77003.77004.16634.1663
C31.55631.54842.15832.55252.62042.20982.27121.09743.10821.09762.70982.72872.83023.50172.90272.96663.5545
C41.55631.54842.15832.55252.62042.20982.27123.10821.09742.70981.09762.72872.83022.90273.50173.55452.9666
C51.52893.02692.55252.55252.51163.04424.11312.71462.71463.46323.46321.09723.47291.09811.09812.76882.7688
C61.52323.49572.62042.62042.51164.22174.24243.29693.29692.70492.70493.47641.09732.76562.76561.09851.0985
H72.74041.09582.20982.20983.04424.22171.77532.51642.51643.08213.08212.44304.54473.78543.78544.80594.8059
H83.11991.09552.27122.27124.11314.24241.77532.97412.97412.49602.49603.89134.11514.82774.82774.94294.9429
H92.27772.27991.09743.10822.71463.29692.51642.97413.91821.78133.78362.71913.65883.79472.72663.32134.2416
H102.27772.27993.10821.09742.71463.29692.51642.97413.91823.78361.78132.71913.65882.72663.79474.24163.3213
H112.20752.20321.09762.70983.46322.70493.08212.49601.78133.78362.84393.79332.50714.33363.70462.99313.7430
H122.20752.20322.70981.09763.46322.70493.08212.49603.78361.78132.84393.79332.50713.70464.33363.74302.9931
H132.18462.81472.72872.72871.09723.47642.44303.89132.71912.71913.79333.79334.32761.77481.77483.78013.7801
H142.17203.62442.83022.83023.47291.09734.54474.11513.65883.65882.50712.50714.32763.77483.77481.77671.7767
H152.17453.77003.50172.90271.09812.76563.78544.82773.79472.72664.33363.70461.77483.77481.77773.12332.5685
H162.17453.77002.90273.50171.09812.76563.78544.82772.72663.79473.70464.33361.77483.77481.77772.56853.1233
H172.17304.16632.96663.55452.76881.09854.80594.94293.32134.24162.99313.74303.78011.77673.12332.56851.7763
H182.17304.16633.55452.96662.76881.09854.80594.94294.24163.32133.74302.99313.78011.77672.56853.12331.7763

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 89.083 C1 C3 H9 117.208
C1 C3 H11 111.392 C1 C4 C2 89.083
C1 C4 H10 117.208 C1 C4 H12 111.392
C1 C5 H13 111.523 C1 C5 H15 110.663
C1 C5 H16 110.663 C1 C6 H14 110.918
C1 C6 H17 110.926 C1 C6 H18 110.926
C2 C3 H9 118.018 C2 C3 H11 111.609
C2 C4 H10 118.018 C2 C4 H12 111.609
C3 C1 C4 87.801 C3 C1 C5 111.647
C3 C1 C6 116.621 C3 C2 C4 88.364
C3 C2 H7 112.246 C3 C2 H8 117.393
C4 C1 C5 111.647 C4 C1 C6 116.621
C4 C2 H7 112.246 C4 C2 H8 117.393
C5 C1 C6 110.753 H7 C2 H8 108.225
H9 C3 H11 108.487 H10 C4 H12 108.487
H13 C5 H15 107.890 H13 C5 H16 107.890
H14 C6 H17 108.018 H14 C6 H18 108.018
H15 C5 H16 108.080 H17 C6 H18 107.906
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability