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 C5H9N (Pentanenitrile)

using model chemistry: HF/CEP-121G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/CEP-121G
 hartrees
Energy at 0K-42.251500
Energy at 298.15K-42.261307
Nuclear repulsion energy115.598728
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 HF/CEP-121G
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' 3229 2946 73.80      
2 A' 3190 2911 26.35      
3 A' 3169 2891 34.57      
4 A' 3145 2870 19.78      
5 A' 3134 2860 68.23      
6 A' 2474 2257 21.51      
7 A' 1653 1509 11.05      
8 A' 1640 1496 0.25      
9 A' 1635 1492 2.58      
10 A' 1624 1482 5.17      
11 A' 1556 1420 4.30      
12 A' 1533 1399 1.38      
13 A' 1490 1360 2.18      
14 A' 1411 1288 0.33      
15 A' 1223 1116 4.51      
16 A' 1145 1044 0.03      
17 A' 1092 997 0.49      
18 A' 996 909 1.57      
19 A' 954 871 10.96      
20 A' 582 531 2.60      
21 A' 405 369 0.93      
22 A' 304 277 1.19      
23 A' 136 124 6.45      
24 A" 3252 2968 72.62      
25 A" 3230 2947 86.79      
26 A" 3215 2933 0.00      
27 A" 3178 2900 11.13      
28 A" 1637 1494 8.46      
29 A" 1440 1314 0.23      
30 A" 1427 1302 0.26      
31 A" 1356 1237 0.06      
32 A" 1259 1149 0.29      
33 A" 1023 934 0.46      
34 A" 870 794 0.04      
35 A" 797 727 3.30      
36 A" 419 382 0.09      
37 A" 246 225 0.14      
38 A" 113 103 0.12      
39 A" 90 82 4.85      

Unscaled Zero Point Vibrational Energy (zpe) 30634.4 cm-1
Scaled (by 0.9125) Zero Point Vibrational Energy (zpe) 27953.9 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 HF/CEP-121G
ABC
0.50578 0.04361 0.04136

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-121G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.353 0.000
C2 1.510 0.666 0.000
C3 1.798 2.180 0.000
C4 -0.271 -1.171 0.000
N5 -2.850 -1.722 0.000
C6 -1.719 -1.487 0.000
H7 2.868 2.373 0.000
H8 -0.469 0.800 0.873
H9 -0.469 0.800 -0.873
H10 1.974 0.210 0.873
H11 1.974 0.210 -0.873
H12 1.373 2.660 -0.879
H13 1.373 2.660 0.879
H14 0.176 -1.634 -0.874
H15 0.176 -1.634 0.874

Atom - Atom Distances (Å)
  C1 C2 C3 C4 N5 C6 H7 H8 H9 H10 H11 H12 H13 H14 H15
C11.54212.56341.54853.52552.51803.50751.08691.08692.16362.16362.82442.82442.17802.1780
C21.54211.54142.55894.97123.88082.18092.16712.16711.08931.08932.18302.18302.79902.7990
C32.56341.54143.93886.06895.08101.08672.79412.79412.16282.16281.08761.08764.23614.2361
C41.54852.55893.93882.63721.48184.73422.16492.16492.77682.77684.26054.26051.08521.0852
N53.52554.97126.06892.63721.15557.03273.57643.57645.26955.26956.14866.14863.15073.1507
C62.51803.88085.08101.48181.15555.99442.74832.74834.15684.15685.24655.24652.09152.0915
H73.50752.18091.08674.73427.03275.99443.79063.79062.49832.49831.75721.75724.90574.9057
H81.08692.16712.79412.16493.57642.74833.79061.74582.51353.06063.14982.61763.06452.5176
H91.08692.16712.79412.16493.57642.74833.79061.74583.06062.51352.61763.14982.51763.0645
H102.16361.08932.16282.77685.26954.15682.49832.51353.06061.74663.07152.52273.11252.5755
H112.16361.08932.16282.77685.26954.15682.49833.06062.51351.74662.52273.07152.57553.1125
H122.82442.18301.08764.26056.14865.24651.75723.14982.61763.07152.52271.75804.45734.7897
H132.82442.18301.08764.26056.14865.24651.75722.61763.14982.52273.07151.75804.78974.4573
H142.17802.79904.23611.08523.15072.09154.90573.06452.51763.11252.57554.45734.78971.7486
H152.17802.79904.23611.08523.15072.09154.90572.51763.06452.57553.11254.78974.45731.7486

picture of Pentanenitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 112.471 C1 C2 H10 109.409
C1 C2 H11 109.409 C1 C4 C6 112.371
C1 C4 H14 110.339 C1 C4 H15 110.339
C2 C1 C4 111.778 C2 C1 H8 109.824
C2 C1 H9 109.824 C2 C3 H7 110.985
C2 C3 H12 111.095 C2 C3 H13 111.095
C3 C2 H10 109.396 C3 C2 H11 109.396
C4 C1 H8 109.214 C4 C1 H9 109.214
C4 C6 N5 179.436 C6 C4 H14 108.136
C6 C4 H15 108.136 H7 C3 H12 107.836
H7 C3 H13 107.836 H8 C1 H9 106.858
H10 C2 H11 106.587 H12 C3 H13 107.844
H14 C4 H15 107.352
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.249      
2 C -0.198      
3 C -0.464      
4 C -0.290      
5 N 0.143      
6 C -0.288      
7 H 0.154      
8 H 0.144      
9 H 0.144      
10 H 0.125      
11 H 0.125      
12 H 0.143      
13 H 0.143      
14 H 0.183      
15 H 0.183      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  4.398 1.313 0.000 4.589
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -53.514 -7.883 0.000
y -7.883 -40.933 0.000
z 0.000 0.000 -37.368
Traceless
 xyz
x -14.364 -7.883 0.000
y -7.883 4.508 0.000
z 0.000 0.000 9.855
Polar
3z2-r219.711
x2-y2-12.581
xy-7.883
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.951 1.291 0.000
y 1.291 7.997 0.000
z 0.000 0.000 6.881


<r2> (average value of r2) Å2
<r2> 205.563
(<r2>)1/2 14.337