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All results from a given calculation for CH3OCH2CN (Methoxyacetonitrile)

using model chemistry: QCISD(T)/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 QCISD(T)/aug-cc-pVDZ
 hartrees
Energy at 0K-246.671295
Energy at 298.15K-246.676751
HF Energy-245.819792
Nuclear repulsion energy155.326720
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)/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' 3144 3074        
2 A' 2987 2920        
3 A' 2982 2915        
4 A' 2257 2206        
5 A' 1488 1455        
6 A' 1474 1442        
7 A' 1450 1418        
8 A' 1385 1354        
9 A' 1207 1181        
10 A' 1132 1107        
11 A' 979 958        
12 A' 939 918        
13 A' 522 511        
14 A' 373 365        
15 A' 171 168        
16 A" 3048 2980        
17 A" 3025 2958        
18 A" 1471 1438        
19 A" 1241 1213        
20 A" 1160 1135        
21 A" 1017 994        
22 A" 342 335        
23 A" 218 213        
24 A" 81 79        

Unscaled Zero Point Vibrational Energy (zpe) 17046.5 cm-1
Scaled (by 0.9778) Zero Point Vibrational Energy (zpe) 16668.1 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)/aug-cc-pVDZ
ABC
0.96191 0.08059 0.07658

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.154 -0.327 0.000
O2 -0.749 -0.615 0.000
C3 0.000 0.594 0.000
C4 1.448 0.256 0.000
N5 2.603 0.025 0.000
H6 -2.672 -1.298 0.000
H7 -2.441 0.247 0.905
H8 -2.441 0.247 -0.905
H9 -0.220 1.206 -0.900
H10 -0.220 1.206 0.900

Atom - Atom Distances (Å)
  C1 O2 C3 C4 N5 H6 H7 H8 H9 H10
C11.43442.34243.64854.76981.10041.10951.10952.62682.6268
O21.43441.42122.36273.41192.04132.10382.10382.09832.0983
C32.34241.42121.48642.66433.27372.62622.62621.11051.1105
C43.64852.36271.48641.17824.40323.99263.99262.11942.1194
N54.76983.41192.66431.17825.43835.12935.12933.18943.1894
H61.10042.04133.27374.40325.43831.80541.80543.61823.6182
H71.10952.10382.62623.99265.12931.80541.80963.01842.4192
H81.10952.10382.62623.99265.12931.80541.80962.41923.0184
H92.62682.09831.11052.11943.18943.61823.01842.41921.8005
H102.62682.09831.11052.11943.18943.61822.41923.01841.8005

picture of Methoxyacetonitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 C3 110.220 O2 C1 H6 106.529
O2 C1 H7 110.935 O2 C1 H8 110.935
O2 C3 C4 108.672 O2 C3 H9 111.360
O2 C3 H10 111.360 C3 C4 N5 178.228
C4 C3 H9 108.526 C4 C3 H10 108.526
H6 C1 H7 109.559 H6 C1 H8 109.559
H7 C1 H8 109.277 H9 C3 H10 108.317
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1)

Jump to S1C1
Energy calculated at QCISD(T)/aug-cc-pVDZ
 hartrees
Energy at 0K-246.673763
Energy at 298.15K-246.679337
HF Energy-245.821234
Nuclear repulsion energy158.280965
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)/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 3146 3077        
2 A 3116 3047        
3 A 3066 2998        
4 A 3005 2939        
5 A 2993 2927        
6 A 2239 2189        
7 A 1485 1452        
8 A 1472 1440        
9 A 1460 1428        
10 A 1448 1416        
11 A 1363 1333        
12 A 1292 1263        
13 A 1200 1173        
14 A 1161 1136        
15 A 1130 1105        
16 A 1014 992        
17 A 928 908        
18 A 883 864        
19 A 577 565        
20 A 387 378        
21 A 336 329        
22 A 248 243        
23 A 171 168        
24 A 111 108        

Unscaled Zero Point Vibrational Energy (zpe) 17116.9 cm-1
Scaled (by 0.9778) Zero Point Vibrational Energy (zpe) 16736.9 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 QCISD(T)/aug-cc-pVDZ
ABC
0.38657 0.11180 0.09387

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.549 -0.799 0.139
O2 1.103 0.439 -0.442
C3 -0.046 0.949 0.214
C4 -1.247 0.069 0.034
N5 -2.179 -0.642 -0.099
H6 2.464 -1.083 -0.402
H7 0.785 -1.592 0.021
H8 1.777 -0.664 1.216
H9 -0.261 1.935 -0.230
H10 0.126 1.072 1.303

Atom - Atom Distances (Å)
  C1 O2 C3 C4 N5 H6 H7 H8 H9 H10
C11.43862.36702.92953.73861.10041.10751.10893.29912.6223
O21.43861.41762.42653.47212.04212.10752.10272.03532.0975
C32.36701.41761.50002.67893.28712.68012.63241.10211.1098
C42.92952.42651.50001.17913.91022.62463.32882.12692.1220
N53.73863.47212.67891.17914.67353.11474.16903.21433.1963
H61.10042.04213.28713.91024.67351.80481.80684.06953.6073
H71.10752.10752.68012.62463.11471.80481.80943.68713.0287
H81.10892.10272.63243.32884.16901.80681.80943.60522.3969
H93.29912.03531.10212.12693.21434.06953.68713.60521.8009
H102.62232.09751.10982.12203.19633.60733.02872.39691.8009

picture of Methoxyacetonitrile state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 O2 C3 111.933 O2 C1 H6 106.321
O2 C1 H7 111.060 O2 C1 H8 110.587
O2 C3 C4 112.512 O2 C3 H9 107.087
O2 C3 H10 111.599 C3 C4 N5 178.844
C4 C3 H9 108.683 C4 C3 H10 107.868
H6 C1 H7 109.651 H6 C1 H8 109.732
H7 C1 H8 109.442 H9 C3 H10 109.015
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability