Formamide | SSHADE

Molecule NameFormamide Name and identifiers IUPAC nameMethanamide Secondary names Carbamaldehyde, Methanamide, HCONH2, CH3NO InChIInChI=1S/CH3NO/c2-1-3/h1H,(H2,2,3) InChI keyZHNUHDYFZUAESO-UHFFFAOYSA-N CAS number75-12-7 Structure and atomic composition Formula$HCONH_2$ Chemical formulaHCONH2 Structural formulaO=[CH][NH2] Charge0 Unpaired electrons0 Atoms

Atom	Name	Number
$H$	Hydrogen	3
$C$	Carbon	1
$O$	Oxygen	1
$N$	Nitrogen	1

Stereoisomers Relations

• no

Isotopic composition Isotope mixture typeterrestrial abundance Nuclear spin isomers Spin typeunknown Properties Molar mass45.04 $g/mol$ State STPliquid Proticprotic Polaritypolar Dipole3.73 $D$ Fundamental vibration modes Molecule symmetryCs Casenonlinear-polyatomic Vibrations number12 Vibrations

Label	Mode	Bond	Symmetry	Degeneracy	Fundamental frequency	Observed frequency	Observed frequency	Harmonic frequency	Activity IR	Activity Raman	Strength	Comments
V1	stretching sym.	$-O-H$	$A_{1}'$	no	3570.0	active	inactive	m
V2	stretching sym.	$\eqslantgtr C-H$	$A_{1}'$	no	2943.0	2942.8	active	inactive	m
V3	stretching sym.	$>C=O$	$A_{1}'$	no	1770.0	active	inactive	vs
V4	stretching sym.	$\eqslantgtr C-H$	$A_{1}'$	no	1387.0	1387.0	active	inactive	vw
V5	bending sym.	$-O-H$	$A_{1}'$	no	1229.0	1229.0	active	inactive	w
V6	stretching sym.	$\eqslantgtr C-O-$	$A_{1}'$	no	1248.0	active	inactive	s
V7	deformation	$HCONH_2$	$A_{1}'$	no	625.0	625.0	active	inactive	m
V8	bending	$\eqslantgtr C-H$	$A_{1}"$	no	942.0	active	inactive	w
V9	deformation	$HCONH_2$	$A_{1}"$	no	638.0	active	inactive	s

Chemical functions and bonds Chemical bonds

Bond	Number
$\eqslantgtr C-H$	1
$>C=O$	1
$\eqslantgtr C-N<$	1
$>N-H$	2

Links

• wikipedia
• NIST Chemistry WebBook