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 CH5N3 (Guanidine)

using model chemistry: MP2/CEP-121G*

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/CEP-121G*
 hartrees
Energy at 0K-38.069775
Energy at 298.15K-38.077478
HF Energy-37.443892
Nuclear repulsion energy69.560392
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/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 3667 3493 12.21      
2 A 3663 3490 18.34      
3 A 3550 3382 6.36      
4 A 3546 3379 18.51      
5 A 3500 3335 7.39      
6 A 1751 1668 184.60      
7 A 1697 1617 164.46      
8 A 1666 1587 62.54      
9 A 1467 1398 109.84      
10 A 1220 1162 24.67      
11 A 1159 1104 56.12      
12 A 1131 1078 28.66      
13 A 931 887 1.74      
14 A 882 840 125.21      
15 A 815 776 326.19      
16 A 736 701 171.42      
17 A 594 566 136.82      
18 A 528 503 15.36      
19 A 473 450 0.26      
20 A 406 387 30.72      
21 A 366 349 36.61      

Unscaled Zero Point Vibrational Energy (zpe) 16872.2 cm-1
Scaled (by 0.9528) Zero Point Vibrational Energy (zpe) 16075.9 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 MP2/CEP-121G*
ABC
0.34279 0.33355 0.17191

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.017 0.126 -0.002
N2 -0.154 1.413 0.011
N3 -1.019 -0.870 0.089
N4 1.268 -0.450 -0.093
H5 -1.148 1.660 -0.046
H6 -1.954 -0.502 -0.063
H7 -0.831 -1.654 -0.532
H8 1.972 0.277 0.015
H9 1.400 -1.194 0.588

Atom - Atom Distances (Å)
  C1 N2 N3 N4 H5 H6 H7 H8 H9
C11.29511.41581.41051.90662.03782.02781.99452.0240
N21.29512.44282.34631.02502.62983.18802.41133.0898
N31.41582.44282.33242.53691.01611.01773.20412.4908
N41.41052.34632.33243.20753.22272.45941.01721.0177
H51.90661.02502.53693.20752.30823.36473.41333.8778
H62.03782.62981.01613.22272.30821.67584.00363.4857
H72.02783.18801.01772.45943.36471.67583.44722.5379
H81.99452.41133.20411.01723.41334.00363.44721.6789
H92.02403.08982.49081.01773.87783.48572.53791.6789

picture of Guanidine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H5 109.985 C1 N3 H6 112.811
C1 N3 H7 111.833 C1 N4 H8 109.414
C1 N4 H9 111.910 N2 C1 N3 128.554
N2 C1 N4 120.208 N3 C1 N4 111.228
H6 N3 H7 110.961 H8 N4 H9 111.193
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability