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 NH2CH2CH2COOH (β–alanine)

using model chemistry: MP2/LANL2DZ

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/LANL2DZ
 hartrees
Energy at 0K-322.381799
Energy at 298.15K-322.391563
HF Energy-321.764108
Nuclear repulsion energy241.698506
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/LANL2DZ
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 3609 3475 7.76      
2 A 3493 3364 2.03      
3 A 3132 3017 14.81      
4 A 3116 3001 26.97      
5 A 3053 2940 516.66      
6 A 3041 2929 43.28      
7 A 3034 2922 247.28      
8 A 1712 1648 29.70      
9 A 1685 1623 296.01      
10 A 1539 1483 5.46      
11 A 1504 1449 19.23      
12 A 1456 1402 197.89      
13 A 1437 1384 40.23      
14 A 1392 1340 6.25      
15 A 1333 1284 5.29      
16 A 1292 1244 7.15      
17 A 1204 1159 112.50      
18 A 1157 1114 44.46      
19 A 1082 1042 24.17      
20 A 1057 1018 145.77      
21 A 1007 970 47.96      
22 A 951 916 8.45      
23 A 918 885 64.61      
24 A 857 825 73.56      
25 A 780 751 10.54      
26 A 661 636 7.73      
27 A 545 524 2.98      
28 A 478 460 7.81      
29 A 405 390 13.32      
30 A 338 326 4.31      
31 A 292 282 7.42      
32 A 201 194 8.02      
33 A 85 82 0.15      

Unscaled Zero Point Vibrational Energy (zpe) 23921.1 cm-1
Scaled (by 0.9631) Zero Point Vibrational Energy (zpe) 23038.4 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/LANL2DZ
ABC
0.22698 0.08070 0.06367

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/LANL2DZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 1.947 0.569 0.128
C2 1.362 -0.737 -0.380
C3 -0.001 -1.026 0.328
C4 -1.100 0.035 0.034
O5 -0.635 1.353 -0.027
O6 -2.312 -0.247 -0.121
H7 2.655 0.959 -0.504
H8 2.338 0.481 1.073
H9 2.050 -1.590 -0.222
H10 1.202 -0.619 -1.465
H11 -0.393 -2.005 0.007
H12 0.154 -1.066 1.425
H13 0.375 1.372 0.085

Atom - Atom Distances (Å)
  N1 C2 C3 C4 O5 O6 H7 H8 H9 H10 H11 H12 H13
N11.51892.52583.09492.70344.34421.02501.02622.18972.12293.48172.75201.7662
C21.51891.56262.61312.91263.71592.13572.13201.10711.10382.19982.19642.3752
C32.52581.56261.55602.48762.48043.41772.87992.19702.19751.10291.10822.4397
C43.09492.61311.55601.39831.25463.90333.61873.55382.82382.15972.17261.9912
O52.70342.91262.48761.39832.31953.34773.28783.98883.05533.36712.92961.0167
O64.34423.71592.48041.25462.31955.12534.85584.56573.78092.60603.02403.1441
H71.02502.13573.41773.90333.34775.12531.67732.63422.35044.28193.75132.3907
H81.02622.13202.87993.61873.28784.85581.67732.45902.99053.84412.69952.3712
H92.18971.10712.19703.55383.98884.56572.63422.45901.79142.48922.56543.4171
H102.12291.10382.19752.82383.05533.78092.35042.99051.79142.57583.10682.6563
H113.48172.19981.10292.15973.36712.60604.28193.84412.48922.57581.78653.4649
H122.75202.19641.10822.17262.92963.02403.75132.69952.56543.10681.78652.7910
H131.76622.37522.43971.99121.01673.14412.39072.37123.41712.65633.46492.7910

picture of β–alanine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 C3 110.097 N1 C2 H9 112.042
N1 C2 H10 107.014 C2 N1 H7 112.744
C2 N1 H8 112.351 C2 C3 C4 113.842
C2 C3 H11 110.038 C2 C3 H12 109.472
C3 C2 H9 109.576 C3 C2 H10 109.807
C3 C4 O5 114.605 C3 C4 O6 123.549
C4 C3 H11 107.404 C4 C3 H12 108.094
C4 O5 H13 110.078 O5 C4 O6 121.839
H7 N1 H8 109.716 H9 C2 H10 108.241
H11 C3 H12 107.795
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability