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All results from a given calculation for CH3OCH2CN (Methoxyacetonitrile)

using model chemistry: QCISD/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 no CS 1A'
1 2 yes C1 1A

Conformer 1 (CS)

Jump to S1C2
Energy calculated at QCISD/6-31G*
 hartrees
Energy at 0K-246.540774
Energy at 298.15K-246.546325
HF Energy-245.788260
Nuclear repulsion energy156.452875
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 QCISD/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' 3184 3032 19.17      
2 A' 3032 2888 47.70      
3 A' 3022 2878 18.54      
4 A' 2357 2244 1.76      
5 A' 1567 1493 1.56      
6 A' 1549 1475 8.32      
7 A' 1518 1446 0.45      
8 A' 1448 1379 44.49      
9 A' 1256 1196 61.01      
10 A' 1189 1133 106.05      
11 A' 1019 970 31.64      
12 A' 970 924 9.59      
13 A' 542 516 1.15      
14 A' 385 366 2.38      
15 A' 178 170 2.39      
16 A" 3090 2943 48.30      
17 A" 3058 2912 32.33      
18 A" 1537 1464 7.16      
19 A" 1286 1224 3.21      
20 A" 1203 1146 3.71      
21 A" 1062 1011 2.30      
22 A" 360 343 2.21      
23 A" 230 219 4.92      
24 A" 88 84 0.12      

Unscaled Zero Point Vibrational Energy (zpe) 17565.6 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 16727.7 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 QCISD/6-31G*
ABC
0.97115 0.08179 0.07768

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.138 -0.344 0.000
O2 -0.739 -0.603 0.000
C3 0.000 0.598 0.000
C4 1.437 0.258 0.000
N5 2.581 0.029 0.000
H6 -2.631 -1.319 0.000
H7 -2.440 0.220 0.896
H8 -2.440 0.220 -0.896
H9 -0.218 1.211 -0.891
H10 -0.218 1.211 0.891

Atom - Atom Distances (Å)
  C1 O2 C3 C4 N5 H6 H7 H8 H9 H10
C11.42252.33663.62584.73441.09241.10101.10102.62632.6263
O21.42251.41042.34083.38042.02282.09102.09102.08672.0867
C32.33661.41041.47682.64373.25562.62722.62721.10281.1028
C43.62582.34081.47681.16724.36353.97993.97992.10752.1075
N54.73443.38042.64371.16725.38405.10475.10473.16713.1671
H61.09242.02283.25564.36355.38401.79051.79053.60773.6077
H71.10102.09102.62723.97995.10471.79051.79293.01892.4332
H81.10102.09102.62723.97995.10471.79051.79292.43323.0189
H92.62632.08671.10282.10753.16713.60773.01892.43321.7812
H102.62632.08671.10282.10753.16713.60772.43323.01891.7812

picture of Methoxyacetonitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 C3 111.141 O2 C1 H6 106.354
O2 C1 H7 111.275 O2 C1 H8 111.275
O2 C3 C4 108.313 O2 C3 H9 111.674
O2 C3 H10 111.674 C3 C4 N5 178.055
C4 C3 H9 108.694 C4 C3 H10 108.694
H6 C1 H7 109.435 H6 C1 H8 109.435
H7 C1 H8 109.016 H9 C3 H10 107.716
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1)

Jump to S1C1
Energy calculated at QCISD/6-31G*
 hartrees
Energy at 0K-246.543334
Energy at 298.15K-246.549001
HF Energy-245.790255
Nuclear repulsion energy159.343516
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 QCISD/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 3186 3034 19.94      
2 A 3148 2998 6.85      
3 A 3111 2962 36.79      
4 A 3046 2901 32.66      
5 A 3041 2896 28.78      
6 A 2343 2231 2.32      
7 A 1556 1482 9.12      
8 A 1541 1467 7.17      
9 A 1535 1462 1.56      
10 A 1518 1446 0.18      
11 A 1422 1354 18.97      
12 A 1337 1273 6.88      
13 A 1247 1188 58.65      
14 A 1208 1150 15.40      
15 A 1187 1130 75.80      
16 A 1059 1008 6.75      
17 A 969 922 32.10      
18 A 916 872 22.15      
19 A 597 569 2.22      
20 A 403 384 3.18      
21 A 352 336 1.29      
22 A 259 247 11.26      
23 A 177 168 4.42      
24 A 119 113 8.99      

Unscaled Zero Point Vibrational Energy (zpe) 17637.4 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 16796.1 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 QCISD/6-31G*
ABC
0.39559 0.11245 0.09482

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.560 -0.779 0.140
O2 1.083 0.432 -0.445
C3 -0.055 0.937 0.213
C4 -1.244 0.061 0.037
N5 -2.168 -0.641 -0.097
H6 2.469 -1.043 -0.407
H7 0.825 -1.589 0.040
H8 1.801 -0.634 1.204
H9 -0.268 1.917 -0.227
H10 0.121 1.069 1.292

Atom - Atom Distances (Å)
  C1 O2 C3 C4 N5 H6 H7 H8 H9 H10
C11.42672.35792.92963.73851.09231.09881.10063.27812.6109
O21.42671.40742.40513.44072.02382.09432.08992.01922.0851
C32.35791.40741.48832.65593.26662.68082.62541.09461.1019
C42.92962.40511.48831.16773.89882.64643.33402.11362.1112
N53.73853.44072.65591.16774.66443.14254.17653.18863.1773
H61.09232.02383.26663.89884.66441.78941.79124.03473.5859
H71.09882.09432.68082.64643.14251.78941.79403.68213.0216
H81.10062.08992.62543.33404.17651.79121.79403.58232.3935
H93.27812.01921.09462.11363.18864.03473.68213.58231.7830
H102.61092.08511.10192.11123.17733.58593.02162.39351.7830

picture of Methoxyacetonitrile state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 C3 112.605 O2 C1 H6 106.148
O2 C1 H7 111.384 O2 C1 H8 110.908
O2 C3 C4 112.292 O2 C3 H9 106.951
O2 C3 H10 111.821 C3 C4 N5 179.154
C4 C3 H9 108.878 C4 C3 H10 108.266
H6 C1 H7 109.500 H6 C1 H8 109.531
H7 C1 H8 109.310 H9 C3 H10 108.534
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability