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/aug-cc-pVDZ

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/aug-cc-pVDZ
 hartrees
Energy at 0K-246.605161
Energy at 298.15K-246.610656
HF Energy-245.818783
Nuclear repulsion energy155.649420
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/aug-cc-pVDZ
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' 3200 3069 12.85      
2 A' 3031 2907 53.17      
3 A' 3025 2901 20.90      
4 A' 2175 2086 8.57      
5 A' 1498 1437 6.48      
6 A' 1484 1423 3.27      
7 A' 1458 1398 0.11      
8 A' 1390 1333 34.70      
9 A' 1212 1163 39.51      
10 A' 1143 1096 135.03      
11 A' 986 946 25.89      
12 A' 952 913 10.24      
13 A' 529 507 1.23      
14 A' 375 359 1.74      
15 A' 173 166 2.39      
16 A" 3108 2980 34.95      
17 A" 3074 2948 20.52      
18 A" 1483 1422 7.90      
19 A" 1251 1199 2.67      
20 A" 1169 1121 3.60      
21 A" 1025 983 1.90      
22 A" 343 329 1.39      
23 A" 224 215 3.56      
24 A" 86 83 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 17196.5 cm-1
Scaled (by 0.959) Zero Point Vibrational Energy (zpe) 16491.5 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/aug-cc-pVDZ
ABC
0.96407 0.08105 0.07699

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.147 -0.326 0.000
O2 -0.746 -0.615 0.000
C3 0.000 0.592 0.000
C4 1.438 0.259 0.000
N5 2.600 0.024 0.000
H6 -2.664 -1.293 0.000
H7 -2.431 0.247 0.901
H8 -2.431 0.247 -0.901
H9 -0.225 1.202 -0.897
H10 -0.225 1.202 0.897

Atom - Atom Distances (Å)
  C1 O2 C3 C4 N5 H6 H7 H8 H9 H10
C11.43102.33523.63194.75951.09641.10511.10512.61412.6141
O21.43101.41922.35143.40562.03472.09712.09712.09202.0920
C32.33521.41921.47582.66123.26372.61602.61601.10721.1072
C43.63192.35141.47581.18574.38523.97263.97262.11102.1110
N54.75953.40562.66121.18575.42585.11615.11613.18893.1889
H61.09642.03473.26374.38525.42581.79931.79933.60253.6025
H71.10512.09712.61603.97265.11611.79931.80233.00232.4045
H81.10512.09712.61603.97265.11611.79931.80232.40453.0023
H92.61412.09201.10722.11103.18893.60253.00232.40451.7936
H102.61412.09201.10722.11103.18893.60252.40453.00231.7936

picture of Methoxyacetonitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 C3 110.031 O2 C1 H6 106.476
O2 C1 H7 110.909 O2 C1 H8 110.909
O2 C3 C4 108.616 O2 C3 H9 111.199
O2 C3 H10 111.199 C3 C4 N5 178.363
C4 C3 H9 108.790 C4 C3 H10 108.790
H6 C1 H7 109.626 H6 C1 H8 109.626
H7 C1 H8 109.254 H9 C3 H10 108.191
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1)

Jump to S1C1
Energy calculated at MP2/aug-cc-pVDZ
 hartrees
Energy at 0K-246.607782
Energy at 298.15K-246.613388
HF Energy-245.820201
Nuclear repulsion energy158.724435
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/aug-cc-pVDZ
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 3201 3069 13.45      
2 A 3160 3031 3.07      
3 A 3121 2993 27.24      
4 A 3046 2921 26.00      
5 A 3037 2913 36.26      
6 A 2157 2069 8.64      
7 A 1497 1435 8.96      
8 A 1485 1424 7.87      
9 A 1468 1407 2.65      
10 A 1457 1397 0.92      
11 A 1368 1312 15.56      
12 A 1299 1246 5.45      
13 A 1207 1157 32.85      
14 A 1171 1123 6.26      
15 A 1140 1093 107.62      
16 A 1021 979 7.56      
17 A 939 900 33.48      
18 A 900 863 13.23      
19 A 586 562 1.90      
20 A 388 372 3.02      
21 A 337 323 0.80      
22 A 252 242 9.42      
23 A 174 166 4.21      
24 A 114 109 8.26      

Unscaled Zero Point Vibrational Energy (zpe) 17260.7 cm-1
Scaled (by 0.959) Zero Point Vibrational Energy (zpe) 16553.0 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/aug-cc-pVDZ
ABC
0.38561 0.11320 0.09475

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/aug-cc-pVDZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.532 -0.803 0.140
O2 1.102 0.436 -0.441
C3 -0.044 0.951 0.211
C4 -1.235 0.076 0.038
N5 -2.169 -0.643 -0.101
H6 2.447 -1.091 -0.392
H7 0.767 -1.588 0.013
H8 1.752 -0.673 1.215
H9 -0.254 1.933 -0.237
H10 0.132 1.082 1.296

Atom - Atom Distances (Å)
  C1 O2 C3 C4 N5 H6 H7 H8 H9 H10
C11.43442.35922.90523.71201.09661.10361.10493.28862.6172
O21.43441.41602.41323.46132.03522.10132.09592.02992.0917
C32.35921.41601.48812.67433.27702.67242.62081.09901.1066
C42.90522.41321.48811.18643.88642.60293.29642.11772.1127
N53.71203.46132.67431.18644.64643.08564.13543.21203.1969
H61.09662.03523.27703.88644.64641.79851.79974.05713.5956
H71.10362.10132.67242.60293.08561.79851.80343.67363.0292
H81.10492.09592.62083.29644.13541.79971.80343.59402.3894
H93.28862.02991.09902.11773.21204.05713.67363.59401.7947
H102.61722.09171.10662.11273.19693.59563.02922.38941.7947

picture of Methoxyacetonitrile state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 C3 111.727 O2 C1 H6 106.291
O2 C1 H7 111.104 O2 C1 H8 110.584
O2 C3 C4 112.374 O2 C3 H9 106.956
O2 C3 H10 111.441 C3 C4 N5 178.716
C4 C3 H9 108.952 C4 C3 H10 108.126
H6 C1 H7 109.653 H6 C1 H8 109.674
H7 C1 H8 109.482 H9 C3 H10 108.919
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability