return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CH3OCH2CN (Methoxyacetonitrile)

using model chemistry: MP2=FULL/STO-3G

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 MP2=FULL/STO-3G
 hartrees
Energy at 0K-242.980967
Energy at 298.15K-242.986330
HF Energy-242.659853
Nuclear repulsion energy152.042305
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 MP2=FULL/STO-3G
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' 3526 3135 1.41      
2 A' 3323 2953 5.09      
3 A' 3317 2948 9.13      
4 A' 2113 1878 56.54      
5 A' 1722 1531 3.22      
6 A' 1696 1507 0.18      
7 A' 1638 1456 10.26      
8 A' 1512 1344 43.99      
9 A' 1306 1161 6.94      
10 A' 1262 1122 8.71      
11 A' 1064 945 2.58      
12 A' 978 870 2.56      
13 A' 539 479 0.29      
14 A' 417 370 0.67      
15 A' 174 154 1.49      
16 A" 3475 3089 9.90      
17 A" 3423 3043 4.78      
18 A" 1699 1511 2.98      
19 A" 1336 1187 1.47      
20 A" 1230 1093 4.65      
21 A" 1094 972 2.43      
22 A" 347 309 0.80      
23 A" 258 230 2.22      
24 A" 99 88 0.05      

Unscaled Zero Point Vibrational Energy (zpe) 18773.2 cm-1
Scaled (by 0.8889) Zero Point Vibrational Energy (zpe) 16687.5 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 MP2=FULL/STO-3G
ABC
0.90191 0.07779 0.07367

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.189 -0.244 0.000
O2 -0.780 -0.640 0.000
C3 0.000 0.604 0.000
C4 1.473 0.232 0.000
N5 2.665 -0.060 0.000
H6 -2.782 -1.179 0.000
H7 -2.459 0.351 0.901
H8 -2.459 0.351 -0.901
H9 -0.212 1.231 -0.901
H10 -0.212 1.231 0.901

Atom - Atom Distances (Å)
  C1 O2 C3 C4 N5 H6 H7 H8 H9 H10
C11.46362.34693.69274.85701.10801.11291.11292.62512.6251
O21.46361.46782.41573.49312.07352.14822.14822.15242.1524
C32.34691.46781.51962.74633.30422.63142.63141.11831.1183
C43.69272.41571.51961.22674.48304.03644.03642.15692.1569
N54.85703.49312.74631.22675.56055.21915.21913.27983.2798
H61.10802.07353.30424.48305.56051.80491.80493.63623.6362
H71.11292.14822.63144.03645.21911.80491.80203.01192.4130
H81.11292.14822.63144.03645.21911.80491.80202.41303.0119
H92.62512.15241.11832.15693.27983.63623.01192.41301.8029
H102.62512.15241.11832.15693.27983.63622.41303.01191.8029

picture of Methoxyacetonitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 C3 106.378 O2 C1 H6 106.657
O2 C1 H7 112.264 O2 C1 H8 112.264
O2 C3 C4 107.914 O2 C3 H9 111.960
O2 C3 H10 111.960 C3 C4 N5 179.576
C4 C3 H9 108.750 C4 C3 H10 108.750
H6 C1 H7 108.720 H6 C1 H8 108.720
H7 C1 H8 108.111 H9 C3 H10 107.428
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1)

Jump to S1C1
Energy calculated at MP2=FULL/STO-3G
 hartrees
Energy at 0K-242.982604
Energy at 298.15K-242.988051
HF Energy-242.660840
Nuclear repulsion energy154.763599
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 MP2=FULL/STO-3G
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 3528 3136 1.22      
2 A 3481 3094 8.03      
3 A 3469 3084 0.91      
4 A 3346 2974 4.53      
5 A 3321 2952 7.60      
6 A 2097 1864 55.62      
7 A 1719 1528 3.86      
8 A 1699 1510 2.80      
9 A 1665 1480 1.47      
10 A 1637 1455 6.46      
11 A 1496 1330 33.32      
12 A 1404 1248 2.83      
13 A 1288 1145 10.34      
14 A 1274 1132 11.18      
15 A 1229 1092 4.07      
16 A 1099 977 0.79      
17 A 1015 902 3.93      
18 A 917 815 10.78      
19 A 599 532 0.58      
20 A 435 387 1.19      
21 A 341 303 0.45      
22 A 266 236 4.15      
23 A 182 161 3.42      
24 A 120 107 4.97      

Unscaled Zero Point Vibrational Energy (zpe) 18812.6 cm-1
Scaled (by 0.8889) Zero Point Vibrational Energy (zpe) 16722.5 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 MP2=FULL/STO-3G
ABC
0.37960 0.10497 0.08945

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/STO-3G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.569 -0.810 0.148
O2 1.150 0.444 -0.482
C3 -0.022 0.939 0.238
C4 -1.273 0.078 0.045
N5 -2.268 -0.622 -0.116
H6 2.471 -1.151 -0.397
H7 0.790 -1.601 0.078
H8 1.829 -0.673 1.221
H9 -0.231 1.955 -0.166
H10 0.165 1.032 1.336

Atom - Atom Distances (Å)
  C1 O2 C3 C4 N5 H6 H7 H8 H9 H10
C11.46482.36592.97883.85021.10791.11231.11273.31462.6029
O21.46481.46172.50663.59912.07312.15072.14662.07142.1495
C32.36591.46171.53092.75783.31462.67092.64351.11361.1176
C42.97882.50661.53091.22703.96502.65913.40082.15732.1548
N53.85023.59912.75781.22704.77643.21594.30953.28493.2803
H61.10792.07313.31463.96504.77641.80401.80564.12383.6177
H71.11232.15072.67092.65913.21591.80401.80273.70762.9840
H81.11272.14662.64353.40084.30951.80561.80273.61592.3847
H93.31462.07141.11362.15733.28494.12383.70763.61591.8074
H102.60292.14951.11762.15483.28033.61772.98402.38471.8074

picture of Methoxyacetonitrile state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 C3 107.887 O2 C1 H6 106.548
O2 C1 H7 112.411 O2 C1 H8 112.056
O2 C3 C4 113.757 O2 C3 H9 106.309
O2 C3 H10 112.206 C3 C4 N5 179.362
C4 C3 H9 108.292 C4 C3 H10 107.882
H6 C1 H7 108.685 H6 C1 H8 108.804
H7 C1 H8 108.231 H9 C3 H10 108.198
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability