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: CCSD(T)/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 CCSD(T)/6-31G*
 hartrees
Energy at 0K-246.564133
Energy at 298.15K-246.569631
HF Energy-245.786854
Nuclear repulsion energy156.177984
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 CCSD(T)/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' 3172 3052        
2 A' 3015 2900        
3 A' 3001 2887        
4 A' 2310 2223        
5 A' 1558 1499        
6 A' 1541 1483        
7 A' 1508 1451        
8 A' 1434 1380        
9 A' 1243 1196        
10 A' 1173 1129        
11 A' 1005 967        
12 A' 960 924        
13 A' 532 512        
14 A' 381 366        
15 A' 173 167        
16 A" 3073 2957        
17 A" 3037 2922        
18 A" 1531 1473        
19 A" 1274 1225        
20 A" 1195 1149        
21 A" 1053 1013        
22 A" 348 335        
23 A" 227 219        
24 A" 85 81        

Unscaled Zero Point Vibrational Energy (zpe) 17414.7 cm-1
Scaled (by 0.9621) Zero Point Vibrational Energy (zpe) 16754.6 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 CCSD(T)/6-31G*
ABC
0.96495 0.08162 0.07749

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.141 -0.337 0.000
O2 -0.741 -0.605 0.000
C3 0.000 0.600 0.000
C4 1.437 0.257 0.000
N5 2.586 0.021 0.000
H6 -2.639 -1.310 0.000
H7 -2.440 0.229 0.898
H8 -2.440 0.229 -0.898
H9 -0.218 1.213 -0.892
H10 -0.218 1.213 0.892

Atom - Atom Distances (Å)
  C1 O2 C3 C4 N5 H6 H7 H8 H9 H10
C11.42552.33693.62734.74071.09331.10241.10242.62602.6260
O21.42551.41392.34243.38542.02502.09452.09452.09112.0911
C32.33691.41391.47782.65003.25762.62612.62611.10451.1045
C43.62732.34241.47781.17254.36713.98003.98002.10992.1099
N54.74073.38542.65001.17255.39215.10975.10973.17483.1748
H61.09332.02503.25764.36715.39211.79291.79293.60883.6088
H71.10242.09452.62613.98005.10971.79291.79533.01802.4299
H81.10242.09452.62613.98005.10971.79291.79532.42993.0180
H92.62602.09111.10452.10993.17483.60883.01802.42991.7847
H102.62602.09111.10452.10993.17483.60882.42993.01801.7847

picture of Methoxyacetonitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 C3 110.780 O2 C1 H6 106.272
O2 C1 H7 111.265 O2 C1 H8 111.265
O2 C3 C4 108.179 O2 C3 H9 111.680
O2 C3 H10 111.680 C3 C4 N5 178.143
C4 C3 H9 108.723 C4 C3 H10 108.723
H6 C1 H7 109.479 H6 C1 H8 109.479
H7 C1 H8 109.030 H9 C3 H10 107.783
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1)

Jump to S1C1
Energy calculated at CCSD(T)/6-31G*
 hartrees
Energy at 0K-246.566833
Energy at 298.15K-246.572455
HF Energy-245.788793
Nuclear repulsion energy159.121848
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 CCSD(T)/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 3172 3052        
2 A 3130 3011        
3 A 3093 2976        
4 A 3025 2910        
5 A 3022 2907        
6 A 2294 2207        
7 A 1549 1491        
8 A 1533 1475        
9 A 1525 1468        
10 A 1509 1451        
11 A 1408 1355        
12 A 1326 1275        
13 A 1234 1187        
14 A 1199 1153        
15 A 1172 1127        
16 A 1049 1009        
17 A 956 920        
18 A 906 872        
19 A 588 566        
20 A 399 384        
21 A 341 328        
22 A 255 246        
23 A 174 168        
24 A 117 113        

Unscaled Zero Point Vibrational Energy (zpe) 17487.7 cm-1
Scaled (by 0.9621) Zero Point Vibrational Energy (zpe) 16824.9 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 CCSD(T)/6-31G*
ABC
0.39131 0.11280 0.09486

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.551 -0.787 0.141
O2 1.087 0.432 -0.445
C3 -0.051 0.943 0.213
C4 -1.243 0.067 0.037
N5 -2.166 -0.644 -0.098
H6 2.460 -1.058 -0.403
H7 0.806 -1.590 0.037
H8 1.788 -0.645 1.208
H9 -0.261 1.924 -0.228
H10 0.125 1.074 1.295

Atom - Atom Distances (Å)
  C1 O2 C3 C4 N5 H6 H7 H8 H9 H10
C11.42982.35882.92313.72731.09351.10021.10213.28172.6130
O21.42981.41072.40713.44412.02652.09792.09352.02282.0895
C32.35881.41071.48952.66253.26942.68022.62501.09601.1037
C42.92312.40711.48951.17323.89482.63543.32572.11692.1135
N53.72733.44412.66251.17324.65433.12224.16353.19983.1844
H61.09352.02653.26943.89484.65431.79201.79404.04093.5890
H71.10022.09792.68022.63543.12221.79201.79613.68243.0237
H81.10212.09352.62503.32574.16351.79401.79613.58592.3928
H93.28172.02281.09602.11693.19984.04093.68243.58591.7866
H102.61302.08951.10372.11353.18443.58903.02372.39281.7866

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 106.090
O2 C1 H7 111.371 O2 C1 H8 110.894
O2 C3 C4 112.161 O2 C3 H9 106.929
O2 C3 H10 111.825 C3 C4 N5 178.705
C4 C3 H9 108.967 C4 C3 H10 108.253
H6 C1 H7 109.550 H6 C1 H8 109.590
H7 C1 H8 109.289 H9 C3 H10 108.616
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability