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 C5H7N ((Z)-2-Pentenenitrile)

using model chemistry: MP2/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP2/6-31G(2df,p)
 hartrees
Energy at 0K-248.824497
Energy at 298.15K-248.831340
HF Energy-247.865873
Nuclear repulsion energy199.465891
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 MP2/6-31G(2df,p)
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 3258 3077 1.71      
2 A 3213 3035 6.86      
3 A 3209 3031 13.42      
4 A 3203 3025 11.31      
5 A 3166 2990 1.18      
6 A 3109 2936 18.40      
7 A 3104 2931 6.82      
8 A 2198 2076 0.29      
9 A 1690 1596 3.16      
10 A 1535 1449 5.37      
11 A 1528 1444 6.33      
12 A 1508 1424 4.19      
13 A 1433 1354 1.63      
14 A 1421 1342 0.39      
15 A 1346 1271 1.25      
16 A 1310 1237 0.04      
17 A 1261 1191 0.28      
18 A 1149 1086 0.75      
19 A 1104 1043 3.87      
20 A 1053 994 2.85      
21 A 1004 948 0.48      
22 A 969 915 3.59      
23 A 880 832 3.83      
24 A 815 770 5.02      
25 A 779 736 30.91      
26 A 664 627 1.96      
27 A 573 541 0.63      
28 A 395 373 0.46      
29 A 369 349 0.06      
30 A 248 234 0.37      
31 A 214 202 3.61      
32 A 150 141 4.58      
33 A 54 51 1.06      

Unscaled Zero Point Vibrational Energy (zpe) 23954.5 cm-1
Scaled (by 0.9445) Zero Point Vibrational Energy (zpe) 22625.1 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 MP2/6-31G(2df,p)
ABC
0.24255 0.06914 0.05852

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G(2df,p)

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.719 -0.108 -0.083
N2 -2.419 -1.050 -0.006
C3 -0.875 1.039 -0.181
H4 -1.341 1.954 -0.526
C5 0.429 0.998 0.137
H6 1.000 1.916 0.027
C7 1.175 -0.212 0.594
H8 0.481 -1.041 0.753
H9 1.649 0.006 1.556
C10 2.252 -0.609 -0.422
H11 1.800 -0.867 -1.380
H12 2.955 0.210 -0.589
H13 2.817 -1.472 -0.067

Atom - Atom Distances (Å)
  C1 N2 C3 H4 C5 H6 C7 H8 H9 C10 H11 H12 H13
C11.17641.42672.14202.42543.39102.97332.53213.74714.01673.82584.71154.7365
N21.17642.60313.23323.51044.52623.73822.99804.48354.71014.44025.54995.2532
C31.42672.60311.08281.34302.08062.52332.65333.23343.54323.49663.94014.4665
H42.14203.23321.08282.11772.40523.50313.73174.13104.41434.30684.63665.4065
C52.42543.51041.34302.11771.08711.49292.13082.11802.49362.76732.74383.4413
H63.39104.52622.08062.40521.08712.20963.08932.53172.85403.21952.66703.8455
C72.97333.73822.52333.50311.49292.20961.09231.09451.53352.17212.17882.1729
H82.53212.99802.65333.73172.13083.08931.09231.76192.16882.51383.07962.5127
H93.74714.48353.23344.13102.11802.53171.09451.76192.15763.06712.51972.4866
C104.01674.71013.54324.41432.49362.85401.53352.16882.15761.09071.09161.0906
H113.82584.44023.49664.30682.76733.21952.17212.51383.06711.09071.76641.7678
H124.71155.54993.94014.63662.74382.66702.17883.07962.51971.09161.76641.7657
H134.73655.25324.46655.40653.44133.84552.17292.51272.48661.09061.76781.7657

picture of (Z)-2-Pentenenitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 H4 116.528 C1 C3 C5 122.227
N2 C1 C3 179.675 C3 C5 H6 117.399
C3 C5 C7 125.612 H4 C3 C5 121.245
C5 C7 H8 110.053 C5 C7 H9 108.911
C5 C7 C10 110.957 H6 C5 C7 116.966
C7 C10 H11 110.599 C7 C10 H12 111.085
C7 C10 H13 110.672 H8 C7 H9 107.354
H8 C7 C10 110.243 H9 C7 C10 109.237
H11 C10 H12 108.079 H11 C10 H13 108.276
H12 C10 H13 108.023
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability