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/TZVP

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/TZVP
 hartrees
Energy at 0K-246.664624
Energy at 298.15K-246.670121
HF Energy-245.871816
Nuclear repulsion energy157.043986
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/TZVP
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' 3215 3047 14.68      
2 A' 3051 2892 55.06      
3 A' 3044 2886 19.30      
4 A' 2226 2110 8.62      
5 A' 1550 1469 3.72      
6 A' 1526 1446 6.78      
7 A' 1508 1430 1.28      
8 A' 1441 1365 37.64      
9 A' 1251 1185 37.73      
10 A' 1173 1112 134.28      
11 A' 1008 955 35.79      
12 A' 963 913 6.99      
13 A' 538 510 0.87      
14 A' 381 361 1.35      
15 A' 174 165 2.14      
16 A" 3122 2959 40.47      
17 A" 3088 2927 25.60      
18 A" 1508 1429 7.94      
19 A" 1275 1209 3.23      
20 A" 1203 1141 3.97      
21 A" 1045 990 2.87      
22 A" 333 316 1.18      
23 A" 228 216 4.33      
24 A" 71 68 0.05      

Unscaled Zero Point Vibrational Energy (zpe) 17458.6 cm-1
Scaled (by 0.9479) Zero Point Vibrational Energy (zpe) 16549.0 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/TZVP
ABC
0.98295 0.08241 0.07829

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.128 -0.335 0.000
O2 -0.737 -0.613 0.000
C3 0.000 0.587 0.000
C4 1.428 0.266 0.000
N5 2.574 0.037 0.000
H6 -2.638 -1.294 0.000
H7 -2.418 0.229 0.892
H8 -2.418 0.229 -0.892
H9 -0.221 1.192 -0.888
H10 -0.221 1.192 0.888

Atom - Atom Distances (Å)
  C1 O2 C3 C4 N5 H6 H7 H8 H9 H10
C11.41852.31953.60684.71731.08591.09471.09472.59992.5999
O21.41851.40852.33713.37482.01902.08092.08092.07702.0770
C32.31951.40851.46332.63233.23992.60212.60211.09691.0969
C43.60682.33711.46331.16914.35513.94823.94822.08872.0887
N54.71733.37482.63231.16915.37965.07505.07503.15193.1519
H61.08592.01903.23994.35515.37961.77881.77883.57943.5794
H71.09472.08092.60213.94825.07501.77881.78432.98722.3990
H81.09472.08092.60213.94825.07501.77881.78432.39902.9872
H92.59992.07701.09692.08873.15193.57942.98722.39901.7756
H102.59992.07701.09692.08873.15193.57942.39902.98721.7756

picture of Methoxyacetonitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 C3 110.266 O2 C1 H6 106.693
O2 C1 H7 111.132 O2 C1 H8 111.132
O2 C3 C4 108.924 O2 C3 H9 111.392
O2 C3 H10 111.392 C3 C4 N5 178.675
C4 C3 H9 108.490 C4 C3 H10 108.490
H6 C1 H7 109.328 H6 C1 H8 109.328
H7 C1 H8 109.176 H9 C3 H10 108.069
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1)

Jump to S1C1
Energy calculated at MP2/TZVP
 hartrees
Energy at 0K-246.667417
Energy at 298.15K-246.673110
HF Energy-245.872996
Nuclear repulsion energy160.260141
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/TZVP
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 3215 3048 15.52      
2 A 3179 3014 3.93      
3 A 3136 2973 30.56      
4 A 3061 2901 30.20      
5 A 3056 2897 34.58      
6 A 2207 2092 8.77      
7 A 1539 1459 8.82      
8 A 1522 1442 2.21      
9 A 1512 1433 7.95      
10 A 1501 1423 1.31      
11 A 1418 1344 17.20      
12 A 1335 1265 4.49      
13 A 1241 1176 35.03      
14 A 1212 1149 7.27      
15 A 1170 1109 110.14      
16 A 1045 991 7.33      
17 A 958 908 35.46      
18 A 913 865 16.28      
19 A 603 571 1.60      
20 A 399 378 2.97      
21 A 340 322 0.85      
22 A 262 249 10.18      
23 A 184 175 5.01      
24 A 119 113 8.36      

Unscaled Zero Point Vibrational Energy (zpe) 17563.1 cm-1
Scaled (by 0.9479) Zero Point Vibrational Energy (zpe) 16648.0 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/TZVP
ABC
0.38832 0.11640 0.09673

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/TZVP

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.542 -0.776 0.138
O2 1.080 0.429 -0.442
C3 -0.047 0.932 0.209
C4 -1.236 0.066 0.041
N5 -2.154 -0.636 -0.100
H6 2.444 -1.054 -0.399
H7 0.805 -1.580 0.040
H8 1.780 -0.637 1.198
H9 -0.265 1.909 -0.218
H10 0.118 1.051 1.287

Atom - Atom Distances (Å)
  C1 O2 C3 C4 N5 H6 H7 H8 H9 H10
C11.41502.33342.90453.70631.08601.09431.09543.25572.5855
O21.41501.39492.39373.42232.01522.08412.07762.01222.0740
C32.33341.39491.48072.64473.24262.65732.60311.08831.0972
C42.90452.39371.48071.16423.87202.62253.30662.09872.0875
N53.70633.42232.64471.16424.62713.10974.14303.17143.1515
H61.08602.01523.24263.87204.62711.77641.77864.01843.5610
H71.09432.08412.65732.62253.10971.77641.78303.65812.9909
H81.09542.07762.60313.30664.14301.77861.78303.55922.3704
H93.25572.01221.08832.09873.17144.01843.65813.55921.7742
H102.58552.07401.09722.08753.15153.56102.99092.37041.7742

picture of Methoxyacetonitrile state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 C3 112.283 O2 C1 H6 106.632
O2 C1 H7 111.679 O2 C1 H8 111.064
O2 C3 C4 112.657 O2 C3 H9 107.610
O2 C3 H10 112.109 C3 C4 N5 178.586
C4 C3 H9 108.595 C4 C3 H10 107.215
H6 C1 H7 109.129 H6 C1 H8 109.247
H7 C1 H8 109.026 H9 C3 H10 108.543
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability