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All results from a given calculation for CH3OCH2CN (Methoxyacetonitrile)

using model chemistry: QCISD(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 QCISD(T)/6-31G*
 hartrees
Energy at 0K-246.565129
Energy at 298.15K-246.570626
HF Energy-245.786697
Nuclear repulsion energy156.144006
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 QCISD(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' 3171 3042        
2 A' 3013 2890        
3 A' 2999 2877        
4 A' 2305 2211        
5 A' 1558 1495        
6 A' 1541 1478        
7 A' 1508 1446        
8 A' 1433 1375        
9 A' 1242 1192        
10 A' 1172 1124        
11 A' 1004 963        
12 A' 959 920        
13 A' 532 510        
14 A' 380 365        
15 A' 173 166        
16 A" 3071 2946        
17 A" 3034 2911        
18 A" 1530 1468        
19 A" 1273 1221        
20 A" 1194 1146        
21 A" 1053 1010        
22 A" 348 334        
23 A" 228 218        
24 A" 85 81        

Unscaled Zero Point Vibrational Energy (zpe) 17401.9 cm-1
Scaled (by 0.9593) Zero Point Vibrational Energy (zpe) 16693.6 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 QCISD(T)/6-31G*
ABC
0.96444 0.08159 0.07746

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(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 1.438 0.256 0.000
N5 2.587 0.021 0.000
H6 -2.640 -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
C11.42572.33713.62784.74171.09341.10251.10252.62612.6261
O21.42571.41422.34273.38622.02532.09492.09492.09152.0915
C32.33711.41421.47812.65083.25802.62622.62621.10471.1047
C43.62782.34271.47811.17314.36773.98043.98042.11042.1104
N54.74173.38622.65081.17315.39325.11075.11073.17593.1759
H61.09342.02533.25804.36775.39321.79321.79323.60913.6091
H71.10252.09492.62623.98045.11071.79321.79543.01812.4299
H81.10252.09492.62623.98045.11071.79321.79542.42993.0181
H92.62612.09151.10472.11043.17593.60913.01812.42991.7849
H102.62612.09151.10472.11043.17593.60912.42993.01811.7849

picture of Methoxyacetonitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 C3 110.764 O2 C1 H6 106.268
O2 C1 H7 111.265 O2 C1 H8 111.265
O2 C3 C4 108.170 O2 C3 H9 111.678
O2 C3 H10 111.678 C3 C4 N5 178.143
C4 C3 H9 108.732 C4 C3 H10 108.732
H6 C1 H7 109.484 H6 C1 H8 109.484
H7 C1 H8 109.025 H9 C3 H10 107.778
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1)

Jump to S1C1
Energy calculated at QCISD(T)/6-31G*
 hartrees
Energy at 0K-246.567849
Energy at 298.15K-246.573469
HF Energy-245.788638
Nuclear repulsion energy159.087373
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 QCISD(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 3170 3041        
2 A 3129 3001        
3 A 3091 2966        
4 A 3023 2900        
5 A 3020 2897        
6 A 2288 2195        
7 A 1549 1486        
8 A 1532 1470        
9 A 1525 1463        
10 A 1508 1447        
11 A 1407 1350        
12 A 1325 1271        
13 A 1233 1183        
14 A 1198 1149        
15 A 1170 1123        
16 A 1048 1005        
17 A 954 916        
18 A 905 868        
19 A 588 564        
20 A 399 383        
21 A 341 327        
22 A 255 245        
23 A 174 167        
24 A 117 113        

Unscaled Zero Point Vibrational Energy (zpe) 17475.3 cm-1
Scaled (by 0.9593) Zero Point Vibrational Energy (zpe) 16764.0 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 QCISD(T)/6-31G*
ABC
0.39107 0.11276 0.09483

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.551 -0.787 0.141
O2 1.088 0.432 -0.446
C3 -0.050 0.944 0.213
C4 -1.243 0.068 0.037
N5 -2.166 -0.644 -0.098
H6 2.460 -1.058 -0.403
H7 0.806 -1.590 0.037
H8 1.787 -0.645 1.208
H9 -0.261 1.925 -0.228
H10 0.126 1.074 1.295

Atom - Atom Distances (Å)
  C1 O2 C3 C4 N5 H6 H7 H8 H9 H10
C11.43012.35912.92363.72781.09361.10031.10223.28202.6129
O21.43011.41102.40763.44472.02672.09822.09382.02312.0899
C32.35911.41101.48992.66343.26982.68072.62481.09611.1039
C42.92362.40761.48991.17383.89552.63603.32562.11732.1138
N53.72783.44472.66341.17384.65513.12264.16373.20103.1853
H61.09362.02673.26983.89554.65511.79231.79424.04133.5889
H71.10032.09822.68072.63603.12261.79231.79633.68303.0239
H81.10222.09382.62483.32564.16371.79421.79633.58592.3921
H93.28202.02311.09612.11733.20104.04133.68303.58591.7869
H102.61292.08991.10392.11383.18533.58893.02392.39211.7869

picture of Methoxyacetonitrile state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 C3 112.267 O2 C1 H6 106.084
O2 C1 H7 111.368 O2 C1 H8 110.888
O2 C3 C4 112.160 O2 C3 H9 106.921
O2 C3 H10 111.822 C3 C4 N5 178.677
C4 C3 H9 108.973 C4 C3 H10 108.245
H6 C1 H7 109.563 H6 C1 H8 109.593
H7 C1 H8 109.288 H9 C3 H10 108.632
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability