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All results from a given calculation for CH3OCH2CN (Methoxyacetonitrile)

using model chemistry: CISD/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 CISD/6-31G*
 hartrees
Energy at 0K-246.417635
Energy at 298.15K-246.423313
HF Energy-245.791827
Nuclear repulsion energy157.729478
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 CISD/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' 3284 3040 19.66      
2 A' 3135 2902 43.41      
3 A' 3127 2895 20.69      
4 A' 2504 2318 0.32      
5 A' 1614 1494 1.96      
6 A' 1597 1478 7.71      
7 A' 1572 1455 0.25      
8 A' 1503 1391 53.11      
9 A' 1312 1214 87.21      
10 A' 1243 1151 105.22      
11 A' 1067 988 36.59      
12 A' 1002 928 11.09      
13 A' 571 529 1.82      
14 A' 397 367 2.90      
15 A' 188 174 2.70      
16 A" 3193 2956 49.22      
17 A" 3169 2934 29.62      
18 A" 1588 1470 7.53      
19 A" 1336 1237 3.65      
20 A" 1247 1155 4.45      
21 A" 1099 1017 2.52      
22 A" 390 361 2.88      
23 A" 233 216 5.48      
24 A" 90 83 0.13      

Unscaled Zero Point Vibrational Energy (zpe) 18229.3 cm-1
Scaled (by 0.9258) Zero Point Vibrational Energy (zpe) 16876.7 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 CISD/6-31G*
ABC
0.99143 0.08288 0.07875

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.124 -0.354 0.000
O2 -0.735 -0.592 0.000
C3 0.000 0.595 0.000
C4 1.432 0.260 0.000
N5 2.560 0.035 0.000
H6 -2.605 -1.326 0.000
H7 -2.431 0.201 0.889
H8 -2.431 0.201 -0.889
H9 -0.214 1.203 -0.884
H10 -0.214 1.203 0.884

Atom - Atom Distances (Å)
  C1 O2 C3 C4 N5 H6 H7 H8 H9 H10
C11.40932.32653.60854.70011.08441.09251.09252.61842.6184
O21.40931.39642.32823.35402.00902.07292.07292.06792.0679
C32.32651.39641.47072.62083.23692.61832.61831.09371.0937
C43.60852.32821.47071.15054.33733.96433.96432.09252.0925
N54.70013.35402.62081.15055.34145.07245.07243.13693.1369
H61.08442.00903.23694.33735.34141.77581.77583.59123.5912
H71.09252.07292.61833.96435.07241.77581.77883.01082.4333
H81.09252.07292.61833.96435.07241.77581.77882.43333.0108
H92.61842.06791.09372.09253.13693.59123.01082.43331.7675
H102.61842.06791.09372.09253.13693.59122.43333.01081.7675

picture of Methoxyacetonitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 C3 112.028 O2 C1 H6 106.617
O2 C1 H7 111.270 O2 C1 H8 111.270
O2 C3 C4 108.567 O2 C3 H9 111.711
O2 C3 H10 111.711 C3 C4 N5 178.105
C4 C3 H9 108.475 C4 C3 H10 108.475
H6 C1 H7 109.318 H6 C1 H8 109.318
H7 C1 H8 108.995 H9 C3 H10 107.805
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1)

Jump to S1C1
Energy calculated at CISD/6-31G*
 hartrees
Energy at 0K-246.420076
Energy at 298.15K-246.425873
HF Energy-245.793791
Nuclear repulsion energy160.526603
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 CISD/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 3284 3041 20.62      
2 A 3250 3009 6.37      
3 A 3211 2973 37.83      
4 A 3152 2918 27.73      
5 A 3140 2907 31.94      
6 A 2488 2304 0.24      
7 A 1604 1485 9.53      
8 A 1591 1473 6.88      
9 A 1585 1468 1.97      
10 A 1570 1453 0.28      
11 A 1475 1366 22.65      
12 A 1387 1284 10.19      
13 A 1304 1207 93.00      
14 A 1253 1160 24.50      
15 A 1239 1147 54.66      
16 A 1099 1018 8.00      
17 A 1012 937 34.77      
18 A 948 878 27.03      
19 A 627 580 2.01      
20 A 414 383 2.97      
21 A 381 352 1.95      
22 A 270 250 13.77      
23 A 184 170 4.09      
24 A 121 112 9.70      

Unscaled Zero Point Vibrational Energy (zpe) 18293.8 cm-1
Scaled (by 0.9258) Zero Point Vibrational Energy (zpe) 16936.4 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 CISD/6-31G*
ABC
0.40608 0.11309 0.09566

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.569 -0.763 0.136
O2 1.069 0.428 -0.438
C3 -0.061 0.926 0.208
C4 -1.244 0.051 0.035
N5 -2.158 -0.637 -0.093
H6 2.468 -1.016 -0.416
H7 0.851 -1.578 0.051
H8 1.820 -0.613 1.189
H9 -0.280 1.896 -0.228
H10 0.109 1.060 1.280

Atom - Atom Distances (Å)
  C1 O2 C3 C4 N5 H6 H7 H8 H9 H10
C11.41332.34822.93043.73651.08441.09061.09233.25952.6005
O21.41331.39322.39033.41522.01052.07622.07212.00502.0668
C32.34821.39321.48192.63313.24862.66982.62071.08631.0931
C42.93042.39031.48191.15123.88822.65373.34102.09822.0969
N53.73653.41522.63311.15124.65253.15574.17993.15613.1467
H61.08442.01053.24863.88824.65251.77471.77644.00853.5705
H71.09062.07622.66982.65373.15571.77471.77983.66463.0035
H81.09232.07212.62073.34104.17991.77641.77983.56612.3950
H93.25952.00501.08632.09823.15614.00853.66463.56611.7681
H102.60052.06681.09312.09693.14673.57053.00352.39501.7681

picture of Methoxyacetonitrile state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 C3 113.585 O2 C1 H6 106.466
O2 C1 H7 111.386 O2 C1 H8 110.933
O2 C3 C4 112.441 O2 C3 H9 107.275
O2 C3 H10 111.893 C3 C4 N5 179.417
C4 C3 H9 108.586 C4 C3 H10 108.086
H6 C1 H7 109.364 H6 C1 H8 109.388
H7 C1 H8 109.247 H9 C3 H10 108.445
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability