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Experimental data for NH2CH2CH2COOH (β–alanine)

22 02 02 11 45
Other names
β-Alanine; β-Aminopropionic acid; ω-Aminopropionic acid; 3-Aminopropanoic acid; 3-Aminopropionic acid; Abufene; ALANINE, β; b-Alanine; Propanoic acid, 3-amino-; beta-Alanine; beta-Aminopropionic acid; omega-Aminopropionic acid;
INChI INChIKey SMILES IUPAC name
InChI=1S/C3H7NO2/c4-2-1-3(5)6/h1-2,4H2,(H,5,6) UCMIRNVEIXFBKS-UHFFFAOYSA-N OC(CCN)=O 3-Aminopropanoic acid
State Conformation
1A C1
Enthalpy of formation (Hfg), Entropy, Integrated heat capacity (0 K to 298.15 K) (HH), Heat Capacity (Cp)
Property Value Uncertainty units Reference Comment
Hfg(298.15K) enthalpy of formation -424.00 2.00 kJ mol-1 webbook
Hfg(0K) enthalpy of formation   2.00 kJ mol-1 webbook
Entropy (298.15K) entropy     J K-1 mol-1  
Integrated Heat Capacity (0 to 298.15K) integrated heat capacity     kJ mol-1  
Information can also be found for this species in the NIST Chemistry Webbook
Vibrational levels (cm-1) vibrations
Mode Number Symmetry Frequency Intensity Comment Description
Fundamental(cm-1) Harmonic(cm-1) Reference (km mol-1) unc. Reference

Calculated vibrational frequencies for NH2CH2CH2COOH (β–alanine).
Rotational Constants (cm-1) rotational constants
See section I.F.4 to change rotational constant units
A B C reference comment
0.24243 0.07789 0.06627 1995McG/God:1043

Calculated rotational constants for NH2CH2CH2COOH (β–alanine).
Product of moments of inertia moments of inertia
3828052amu3Å6   1.7528542922544E-113gm3 cm6
Geometric Data
picture of β–alanine

Point Group C1


Internal coordinates
distances (r) in Å, angles (a) in degrees, dihedrals (d) in degrees
Description Value unc. Connectivity Reference Comment
Atom 1 Atom 2 Atom 3 Atom 4

Cartesians
Atom x (Å) y (Å) z (Å)

Atom - Atom Distances bond lengths
Distances in Å
 

Calculated geometries for NH2CH2CH2COOH (β–alanine).

Bond descriptions


Examples: C-C single bond, C=C, double bond, C#C triple bond, C:C aromatic bond
Bond Type Count
H-C 4
H-N 2
H-O 1
C-C 2
C-N 1
C-O 1
C=O 1

Connectivity
Atom 1 Atom 2
N1 C2
N1 H7
N1 H8
C2 C3
C2 H9
C2 H10
C3 C4
C3 H11
C3 H12
C4 O5
C4 O6
O5 H13
Electronic energy levels (cm-1)
Energy (cm-1) Degeneracy reference description
0 1   1A

Ionization Energies (eV)
Ionization Energy I.E. unc. vertical I.E. v.I.E. unc. reference
8.800   9.700   webbook
Dipole, Quadrupole and Polarizability
Electric dipole moment dipole
State Config State description Conf description Exp. min. Dipole (Debye) Reference comment Point Group Components
x y z total dipole quadrupole
1 1 1A C1 True           C1 3 5
Experimental dipole measurement abbreviations: MW microwave; DT Dielectric with Temperature variation; DR Indirect (usually an upper limit); MB Molecular beam
Calculated electric dipole moments for NH2CH2CH2COOH (β–alanine).
Electric quadrupole moment quadrupole
State Config State description Conf description Exp. min. Quadrupole (D Å) Reference comment Point Group Components
xx yy zz dipole quadrupole
1 1 1A C1 True       C1 3 5

Calculated electric quadrupole moments for NH2CH2CH2COOH (β–alanine).

References
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squib reference DOI
1995McG/God:1043 McGlone, S.; Godfrey, P. "Rotational Spectrum of a Neurohormone: Beta-Alanine." Journal of the American Chemical Society. 117, 1043-1048 (1995) 10.1021/ja00108a021
webbook NIST Chemistry Webbook (http://webbook.nist.gov/chemistry) 10.18434/T4D303

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