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All results from a given calculation for CH3CH2CH2CN (Butanenitrile)

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-209.346108
Energy at 298.15K-209.353491
HF Energy-208.826465
Nuclear repulsion energy152.280481
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' 3095 2974 25.57      
2 A' 3047 2929 18.49      
3 A' 3037 2919 0.85      
4 A' 3024 2906 15.74      
5 A' 2288 2199 0.04      
6 A' 1580 1519 6.30      
7 A' 1569 1507 2.47      
8 A' 1552 1492 3.68      
9 A' 1479 1421 3.97      
10 A' 1418 1363 1.83      
11 A' 1362 1309 0.34      
12 A' 1138 1094 4.65      
13 A' 1019 979 0.01      
14 A' 931 895 2.51      
15 A' 877 843 2.54      
16 A' 548 526 1.47      
17 A' 360 346 0.10      
18 A' 182 175 4.21      
19 A" 3101 2980 42.48      
20 A" 3079 2959 1.37      
21 A" 3067 2947 0.77      
22 A" 1578 1517 8.09      
23 A" 1377 1323 0.02      
24 A" 1321 1270 0.00      
25 A" 1188 1141 0.09      
26 A" 921 885 0.35      
27 A" 763 734 4.03      
28 A" 431 414 0.00      
29 A" 243 234 0.02      
30 A" 104 100 3.27      

Unscaled Zero Point Vibrational Energy (zpe) 22838.5 cm-1
Scaled (by 0.9611) Zero Point Vibrational Energy (zpe) 21950.1 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/3-21G*
ABC
0.77883 0.07358 0.06990

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 -2.641 0.377 0.000
C2 -1.473 0.501 0.000
C3 0.000 0.643 0.000
C4 0.724 -0.742 0.000
C5 2.267 -0.556 0.000
H6 0.304 1.216 0.889
H7 0.304 1.216 -0.889
H8 0.411 -1.309 0.888
H9 0.411 -1.309 -0.888
H10 2.773 -1.532 0.000
H11 2.587 0.001 0.893
H12 2.587 0.001 -0.893

Atom - Atom Distances (Å)
  N1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12
N11.17372.65393.54564.99553.18853.18853.59823.59825.73985.31705.3170
C21.17371.48022.52413.88672.11262.11262.75972.75974.70724.18774.1877
C32.65391.48021.56212.56441.10091.10092.18352.18353.52362.81132.8113
C43.54562.52411.56211.55412.19072.19071.09951.09952.19572.19582.1958
C54.99553.88672.56441.55412.78982.78982.19072.19071.09901.10011.1001
H63.18852.11261.10092.19072.78981.77812.52763.08993.79922.58623.1405
H73.18852.11261.10092.19072.78981.77813.08992.52763.79923.14052.5862
H83.59822.75972.18351.09952.19072.52763.08991.77662.53252.54023.1023
H93.59822.75972.18351.09952.19073.08992.52761.77662.53253.10232.5402
H105.73984.70723.52362.19571.09903.79923.79922.53252.53251.78371.7837
H115.31704.18772.81132.19581.10012.58623.14052.54023.10231.78371.7852
H125.31704.18772.81132.19581.10013.14052.58623.10232.54021.78371.7852

picture of Butanenitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 C3 179.483 C2 C3 C4 112.096
C2 C3 H6 108.978 C2 C3 H7 108.978
C3 C4 C5 110.755 C3 C4 H8 109.007
C3 C4 H9 109.007 C4 C3 H6 109.481
C4 C3 H7 109.481 C4 C5 H10 110.535
C4 C5 H11 110.475 C4 C5 H12 110.475
C5 C4 H8 110.111 C5 C4 H9 110.111
H6 C3 H7 107.725 H8 C4 H9 107.786
H10 C5 H11 108.413 H10 C5 H12 108.413
H11 C5 H12 108.459
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability