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All results from a given calculation for CH3CH(CH3)CN (Propanenitrile, 2-methyl-)

using model chemistry: QCISD/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at QCISD/3-21G*
 hartrees
Energy at 0K-209.348373
Energy at 298.15K-209.355776
HF Energy-208.827989
Nuclear repulsion energy157.316772
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/3-21G*
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' 3110 2989 27.03      
2 A' 3105 2984 31.05      
3 A' 3046 2928 2.72      
4 A' 3034 2916 11.38      
5 A' 2282 2193 0.05      
6 A' 1583 1521 11.89      
7 A' 1578 1516 6.67      
8 A' 1485 1427 4.46      
9 A' 1402 1348 2.34      
10 A' 1229 1181 3.47      
11 A' 1178 1133 8.00      
12 A' 917 882 0.23      
13 A' 757 727 0.58      
14 A' 572 550 1.49      
15 A' 367 353 0.19      
16 A' 301 289 0.81      
17 A' 238 228 1.01      
18 A" 3106 2985 13.05      
19 A" 3100 2980 1.31      
20 A" 3032 2914 14.32      
21 A" 1567 1506 3.75      
22 A" 1566 1505 0.07      
23 A" 1468 1410 5.62      
24 A" 1369 1316 0.11      
25 A" 1140 1096 3.13      
26 A" 994 956 1.33      
27 A" 971 933 1.43      
28 A" 597 573 0.40      
29 A" 243 233 0.03      
30 A" 211 203 2.95      

Unscaled Zero Point Vibrational Energy (zpe) 22772.7 cm-1
Scaled (by 0.9611) Zero Point Vibrational Energy (zpe) 21886.8 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/3-21G*
ABC
0.26038 0.12875 0.09460

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.153 -2.237 0.000
C2 -0.105 -1.092 0.000
C3 -0.419 0.358 0.000
C4 0.153 1.033 1.285
C5 0.153 1.033 -1.285
H6 -1.516 0.463 0.000
H7 -0.113 2.099 1.284
H8 -0.257 0.563 2.189
H9 1.248 0.939 1.299
H10 -0.113 2.099 -1.284
H11 -0.257 0.563 -2.189
H12 1.248 0.939 -1.299

Atom - Atom Distances (Å)
  N1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12
N11.17422.65793.51323.51323.17434.53023.57783.60164.53023.57783.6016
C21.17421.48372.49602.49602.09943.43942.74822.76383.43942.74822.7638
C32.65791.48371.55991.55991.10122.18472.20452.19142.18472.20452.1914
C43.51322.49601.55992.56972.18161.09911.09831.09872.79433.52932.8073
C53.51322.49601.55992.56972.18162.79433.52932.80731.09911.09831.0987
H63.17432.09941.10122.18162.18162.50842.52693.09002.50842.52693.0900
H74.53023.43942.18471.09912.79432.50841.78851.78832.56833.80033.1413
H83.57782.74822.20451.09833.52932.52691.78851.78843.80034.37793.8168
H93.60162.76382.19141.09872.80733.09001.78831.78843.14133.81682.5970
H104.53023.43942.18472.79431.09912.50842.56833.80033.14131.78851.7883
H113.57782.74822.20453.52931.09832.52693.80034.37793.81681.78851.7884
H123.60162.76382.19142.80731.09873.09003.14133.81682.59701.78831.7884

picture of Propanenitrile, 2-methyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 C3 179.548 C2 C3 C4 110.163
C2 C3 C5 110.163 C2 C3 H6 107.698
C3 C4 H7 109.269 C3 C4 H8 110.864
C3 C4 H9 109.811 C3 C5 H10 109.269
C3 C5 H11 110.864 C3 C5 H12 109.811
C4 C3 C5 110.912 C4 C3 H6 108.914
C5 C3 H6 108.914 H7 C4 H8 108.964
H7 C4 H9 108.912 H8 C4 H9 108.988
H10 C5 H11 108.964 H10 C5 H12 108.912
H11 C5 H12 108.988
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability