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

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

Conformer 2 (CS)

Jump to S1C1
Energy calculated at CID/6-31G*
 hartrees
Energy at 0K-234.862447
Energy at 298.15K-234.876215
Nuclear repulsion energy256.124893
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 CID/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3252 3004 70.69      
2 A' 3234 2987 48.27      
3 A' 3231 2984 24.41      
4 A' 3223 2977 12.42      
5 A' 3197 2953 25.05      
6 A' 3179 2937 11.91      
7 A' 3155 2914 27.40      
8 A' 3149 2909 25.23      
9 A' 1619 1496 1.54      
10 A' 1603 1481 2.37      
11 A' 1594 1472 5.94      
12 A' 1582 1461 0.02      
13 A' 1520 1404 2.07      
14 A' 1508 1393 10.15      
15 A' 1419 1311 6.14      
16 A' 1396 1289 0.92      
17 A' 1318 1218 1.20      
18 A' 1285 1187 0.21      
19 A' 1074 992 0.59      
20 A' 1051 971 0.48      
21 A' 1012 934 0.40      
22 A' 984 909 0.41      
23 A' 930 859 0.44      
24 A' 753 695 0.86      
25 A' 639 590 1.18      
26 A' 417 385 0.34      
27 A' 369 340 0.01      
28 A' 170 157 0.00      
29 A" 3230 2984 57.15      
30 A" 3227 2981 7.44      
31 A" 3221 2976 7.53      
32 A" 3175 2932 66.07      
33 A" 1607 1485 5.93      
34 A" 1585 1464 0.49      
35 A" 1581 1460 3.10      
36 A" 1372 1267 0.10      
37 A" 1341 1239 0.51      
38 A" 1307 1207 0.34      
39 A" 1270 1173 2.11      
40 A" 1153 1065 0.05      
41 A" 1048 968 0.00      
42 A" 1004 927 1.92      
43 A" 945 873 0.00      
44 A" 839 775 0.18      
45 A" 406 375 0.07      
46 A" 316 292 0.02      
47 A" 286 264 0.00      
48 A" 242 223 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 38506.3 cm-1
Scaled (by 0.9237) Zero Point Vibrational Energy (zpe) 35568.3 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 CID/6-31G*
ABC
0.16763 0.10417 0.09508

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.098 0.400 0.000
C2 0.362 -1.720 0.000
C3 -0.098 -0.716 1.075
C4 -0.098 -0.716 -1.075
C5 1.209 1.183 0.000
C6 -1.288 1.343 0.000
H7 1.441 -1.861 0.000
H8 -0.109 -2.700 0.000
H9 0.543 -0.570 1.943
H10 0.543 -0.570 -1.943
H11 -1.106 -0.935 1.424
H12 -1.106 -0.935 -1.424
H13 2.074 0.520 0.000
H14 -2.226 0.789 0.000
H15 1.277 1.820 -0.882
H16 1.277 1.820 0.882
H17 -1.277 1.985 0.881
H18 -1.277 1.985 -0.881

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14 H15 H16 H17 H18
C12.16901.54911.54911.52321.51812.73503.09992.26442.26442.19672.19672.17472.16322.16452.16452.16332.1633
C22.16901.54091.54093.02343.47851.08771.08752.26522.26522.19082.19082.81893.60423.76083.76084.14604.1460
C31.54911.54092.14932.54302.60922.19862.25651.08933.08871.08942.70322.71982.81903.48552.89092.95343.5371
C41.54911.54092.14932.54302.60922.19862.25653.08871.08932.70321.08942.71982.81902.89093.48553.53712.9534
C51.52323.02342.54302.54302.50173.05294.10022.70032.70033.44543.44541.08943.45721.09021.09022.75702.7570
C61.51813.47852.60922.60922.50174.20834.21103.28423.28422.69202.69203.46051.08942.75412.75411.09061.0906
H72.73501.08772.19862.19863.05294.20831.76182.49992.49993.06133.06132.46424.52393.78893.78894.79144.7914
H83.09991.08752.25652.25654.10024.21101.76182.95602.95602.47752.47753.89004.08074.80914.80914.90824.9082
H92.26442.26521.08933.08872.70033.28422.49992.95603.88661.76723.76702.70323.64543.77262.71593.31194.2213
H102.26442.26523.08871.08932.70033.28422.49992.95603.88663.76701.76722.70323.64542.71593.77264.22133.3119
H112.19672.19081.08942.70323.44542.69203.06132.47751.76723.76702.84763.77562.50034.31113.68272.97463.7240
H122.19672.19082.70321.08943.44542.69203.06132.47753.76701.76722.84763.77562.50033.68274.31113.72402.9746
H132.17472.81892.71982.71981.08943.46052.46423.89002.70322.70323.77563.77564.30781.76101.76103.76173.7617
H142.16323.60422.81902.81903.45721.08944.52394.08073.64543.64542.50032.50034.30783.75673.75671.76281.7628
H152.16453.76083.48552.89091.09022.75413.78894.80913.77262.71594.31113.68271.76103.75671.76403.10842.5599
H162.16453.76082.89093.48551.09022.75413.78894.80912.71593.77263.68274.31111.76103.75671.76402.55993.1084
H172.16334.14602.95343.53712.75701.09064.79144.90823.31194.22132.97463.72403.76171.76283.10842.55991.7627
H182.16334.14603.53712.95342.75701.09064.79144.90824.22133.31193.72402.97463.76171.76282.55993.10841.7627

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 89.165 C1 C3 H9 117.177
C1 C3 H11 111.540 C1 C4 C2 89.165
C1 C4 H10 117.177 C1 C4 H12 111.540
C1 C5 H13 111.615 C1 C5 H15 110.741
C1 C5 H16 110.741 C1 C6 H14 111.053
C1 C6 H17 110.988 C1 C6 H18 110.988
C2 C3 H9 117.889 C2 C3 H11 111.646
C2 C4 H10 117.889 C2 C4 H12 111.646
C3 C1 C4 87.851 C3 C1 C5 111.724
C3 C1 C6 116.567 C3 C2 C4 88.442
C3 C2 H7 112.384 C3 C2 H8 117.256
C4 C1 C5 111.724 C4 C1 C6 116.567
C4 C2 H7 112.384 C4 C2 H8 117.256
C5 C1 C6 110.690 H7 C2 H8 108.181
H9 C3 H11 108.419 H10 C4 H12 108.419
H13 C5 H15 107.797 H13 C5 H16 107.797
H14 C6 H17 107.923 H14 C6 H18 107.923
H15 C5 H16 108.003 H17 C6 H18 107.825
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability