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 ((E)-2-Butenenitrile)

using model chemistry: HF/aug-cc-pVTZ

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/aug-cc-pVTZ
 hartrees
Energy at 0K-208.885387
Energy at 298.15K-208.890122
Nuclear repulsion energy139.690183
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/aug-cc-pVTZ
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' 3337 3038 4.12      
2 A' 3310 3013 6.03      
3 A' 3244 2953 17.48      
4 A' 3163 2879 18.53      
5 A' 2572 2341 59.59      
6 A' 1847 1681 29.55      
7 A' 1601 1458 16.12      
8 A' 1539 1401 1.26      
9 A' 1439 1310 3.77      
10 A' 1421 1294 1.38      
11 A' 1217 1108 0.11      
12 A' 1080 984 5.64      
13 A' 972 885 4.04      
14 A' 609 554 0.46      
15 A' 427 389 2.26      
16 A' 196 178 5.80      
17 A" 3211 2923 16.28      
18 A" 1595 1452 7.66      
19 A" 1186 1080 3.82      
20 A" 1085 987 44.42      
21 A" 897 816 4.42      
22 A" 549 500 5.88      
23 A" 214 194 1.24      
24 A" 192 175 1.18      

Unscaled Zero Point Vibrational Energy (zpe) 18449.7 cm-1
Scaled (by 0.9104) Zero Point Vibrational Energy (zpe) 16796.6 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/aug-cc-pVTZ
ABC
1.30439 0.07762 0.07425

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 2.643 0.439 0.000
H2 2.622 -1.089 0.873
H3 2.622 -1.089 -0.873
C4 2.246 -0.567 0.000
H5 0.271 -1.534 0.000
C6 0.752 -0.572 0.000
H7 0.422 1.499 0.000
C8 0.000 0.512 0.000
N9 -2.564 0.410 0.000
C10 -1.436 0.444 0.000

Atom - Atom Distances (Å)
  H1 H2 H3 C4 H5 C6 H7 C8 N9 C10
H11.75981.75981.08123.08532.14452.46122.64435.20784.0797
H21.75981.74541.08432.54662.12743.50683.19385.46854.4250
H31.75981.74541.08432.54662.12743.50683.19385.46854.4250
C41.08121.08431.08432.19911.49422.75562.49184.90863.8186
H53.08532.54662.54662.19911.07573.03632.06423.43782.6130
C62.14452.12742.12741.49421.07572.09651.31933.45852.4125
H72.46123.50683.50682.75563.03632.09651.07273.17862.1367
C82.64433.19383.19382.49182.06421.31931.07272.56641.4380
N95.20785.46855.46854.90863.43783.45853.17862.56641.1285
C104.07974.42504.42503.81862.61302.41252.13671.43801.1285

picture of (E)-2-Butenenitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 C4 H2 108.712 H1 C4 H3 108.712
H1 C4 C6 111.743 H2 C4 H3 107.198
H2 C4 C6 110.175 H3 C4 C6 110.175
C4 C6 H5 116.737 C4 C6 C8 124.555
H5 C6 C8 118.708 C6 C8 H7 122.095
C6 C8 C10 122.020 H7 C8 C10 115.884
C8 C10 N9 179.012
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.286      
2 H 0.304      
3 H 0.304      
4 C -0.744      
5 H 0.284      
6 C -0.435      
7 H 0.342      
8 C -0.047      
9 N -0.651      
10 C 0.356      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  5.017 -0.645 0.000 5.059
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -39.779 0.791 0.000
y 0.791 -27.434 0.000
z 0.000 0.000 -31.313
Traceless
 xyz
x -10.405 0.791 0.000
y 0.791 8.112 0.000
z 0.000 0.000 2.293
Polar
3z2-r24.586
x2-y2-12.345
xy0.791
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.966 -1.614 0.000
y -1.614 7.102 0.000
z 0.000 0.000 5.490


<r2> (average value of r2) Å2
<r2> 150.080
(<r2>)1/2 12.251