Chemical Properties of Cobaltocene (CAS 1277-43-6)

InChI

InChI=1S/2C5H5.Co/c2*1-2-4-5-3-1;/h2*1-5H;

InChI Key

PXFGMRZPRDJDEK-UHFFFAOYSA-N

Formula

C10H10Co

SMILES

C12C3C4C5C1[Co]23451678C2C1C6C7C28

Molecular Weight¹

189.12

CAS

1277-43-6

Other Names

• bis(.eta.-cyclopentadienyl)cobalt
• bis(cyclopentadienyl)cobalt(II)
• bis-(«eta»
• dicyclopentadienylcobalt

• Δ_cH°_solid : Standard solid enthalpy of combustion (kJ/mol).
• C_p,solid : Solid phase heat capacity (J/mol×K).
• Δ_fH°_gas : Enthalpy of formation at standard conditions (kJ/mol).
• Δ_fH°_solid : Solid phase enthalpy of formation at standard conditions (kJ/mol).
• Δ_fusH° : Enthalpy of fusion at standard conditions (kJ/mol).
• Δ_subH° : Enthalpy of sublimation at standard conditions (kJ/mol).
• IE : Ionization energy (eV).
• S°_{solid,1 bar} : Solid phase molar entropy at standard conditions (J/mol×K).
• ¹: Molecular weight from the IUPAC atomic weights tables.

Physical Properties

Property	Value	Unit	Source
ΔcH°solid	-5838.80 ± 2.10	kJ/mol	NIST
ΔfH°gas	[277.00; 309.00]	kJ/mol
ΔfH°gas	309.00 ± 2.50	kJ/mol	NIST
ΔfH°gas	277.00 ± 4.00	kJ/mol	NIST
ΔfH°solid	[205.00; 236.90]	kJ/mol
ΔfH°solid	236.90 ± 2.50	kJ/mol	NIST
ΔfH°solid	205.00 ± 4.00	kJ/mol	NIST
ΔfusH°	17.80	kJ/mol	Vapor P...
ΔsubH°	[70.30; 72.10]	kJ/mol
ΔsubH°	72.10 ± 0.10	kJ/mol	NIST
ΔsubH°	70.30 ± 4.20	kJ/mol	NIST
IE	[5.55; 6.20]	eV
IE	5.70 ± 0.20	eV	NIST
IE	6.00 ± 0.10	eV	NIST
IE	6.00 ± 0.10	eV	NIST
IE	6.20 ± 0.10	eV	NIST
IE	5.55	eV	NIST
IE	5.56	eV	NIST
S°solid,1 bar	[236.00; 236.10]	J/mol×K
S°solid,1 bar	236.00	J/mol×K	NIST
S°solid,1 bar	236.10	J/mol×K	NIST

Temperature Dependent Properties

Property	Value	Unit	Temperature (K)	Source
Cp,solid	[197.30; 197.50]	J/mol×K	[298.15; 298.15]
Cp,solid	197.50	J/mol×K	298.15	NIST
Cp,solid	197.30	J/mol×K	298.15	NIST

Similar Compounds

Find more compounds similar to Cobaltocene.

Sources

• Vapor Pressures and Sublimation Enthalpies of Nickelocene and Cobaltocene Measured by Thermogravimetry
• NIST Webbook

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