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 C4H5N ((Z)-2-Butenenitrile)

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-34.527488
Energy at 298.15K-34.532256
Nuclear repulsion energy74.050446
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 3382 3055 7.24      
2 A 3337 3015 18.67      
3 A 3300 2981 9.44      
4 A 3193 2884 25.08      
5 A 2540 2295 43.69      
6 A 1821 1645 22.14      
7 A 1615 1459 14.56      
8 A 1559 1409 0.92      
9 A 1506 1361 2.52      
10 A 1349 1219 1.51      
11 A 1210 1093 0.23      
12 A 1010 912 10.80      
13 A 935 845 0.89      
14 A 704 636 0.88      
15 A 430 389 0.25      
16 A 175 158 5.10      
17 A 3250 2936 29.65      
18 A 1615 1459 8.42      
19 A 1179 1065 2.46      
20 A 1083 978 3.21      
21 A 820 741 50.60      
22 A 572 517 1.72      
23 A 314 284 2.25      
24 A 150 135 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 18524.7 cm-1
Scaled (by 0.9034) Zero Point Vibrational Energy (zpe) 16735.2 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
0.40150 0.11451 0.09058

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 -1.281 0.326 0.000
N2 -2.292 -0.199 0.000
C3 0.000 1.015 0.000
H4 -0.054 2.089 0.000
C5 1.168 0.375 0.000
H6 2.056 0.988 0.000
C7 1.385 -1.117 0.000
H8 0.451 -1.666 0.000
H9 1.961 -1.405 0.876
H10 1.961 -1.405 -0.876

Atom - Atom Distances (Å)
  C1 N2 C3 H4 C5 H6 C7 H8 H9 H10
C11.13911.45452.14792.44913.40203.03112.63913.77773.7777
N21.13912.59353.20023.50724.50733.78993.11094.50664.5066
C31.45452.59351.07541.33152.05622.54252.71833.23563.2356
H42.14793.20021.07542.10482.37993.51443.78854.12764.1276
C52.44913.50721.33152.10481.07941.50832.16312.13702.1370
H63.40204.50732.05622.37991.07942.21033.10172.55092.5509
C73.03113.78992.54253.51441.50832.21031.08271.08721.0872
H82.63913.11092.71833.78852.16313.10171.08271.76461.7646
H93.77774.50663.23564.12762.13702.55091.08721.76461.7521
H103.77774.50663.23564.12762.13702.55091.08721.76461.7521

picture of (Z)-2-Butenenitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 H4 115.396 C1 C3 C5 123.000
N2 C1 C3 179.118 C3 C5 H6 116.664
C3 C5 C7 126.982 H4 C3 C5 121.604
C5 C7 H8 112.157 C5 C7 H9 109.775
C5 C7 H10 109.775 H6 C5 C7 116.353
H8 C7 H9 108.820 H8 C7 H10 108.820
H9 C7 H10 107.367
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 -0.102      
2 N -0.086      
3 C -0.217      
4 H 0.258      
5 C -0.085      
6 H 0.214      
7 C -0.553      
8 H 0.208      
9 H 0.181      
10 H 0.181      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  4.449 1.042 0.000 4.570
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -36.584 -2.033 0.000
y -2.033 -27.171 0.000
z 0.000 0.000 -31.357
Traceless
 xyz
x -7.320 -2.033 0.000
y -2.033 6.800 0.000
z 0.000 0.000 0.520
Polar
3z2-r21.041
x2-y2-9.413
xy-2.033
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.055 -0.414 0.000
y -0.414 6.371 0.000
z 0.000 0.000 4.339


<r2> (average value of r2) Å2
<r2> 101.778
(<r2>)1/2 10.089