(Norbornadiene)molybdenum tetracarbonyl

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(Norbornadiene)molybdenum tetracarbonyl
Mo(nbd)(CO)4 sample (with spatula).jpg
3D model (JSmol)
ECHA InfoCard 100.151.941 Edit this at Wikidata
  • InChI=1S/C7H8.4CO.Mo/c1-2-7-4-3-6(1)5-7;4*1-2;/h1-4,6-7H,5H2;;;;;
  • [C-]#[O+].[C-]#[O+].[C-]#[O+].[C-]#[O+].C1C2C=CC1C=C2.[Mo]
Molar mass 300.13 g·mol−1
GHS labelling:
GHS07: Exclamation mark
H302, H312, H315, H319, H332, H335
P261, P264, P270, P271, P280, P301+P312, P302+P352, P304+P312, P304+P340, P305+P351+P338, P312, P321, P322, P330, P332+P313, P337+P313, P362, P363, P403+P233, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

(Norbornadiene)molybdenum tetracarbonyl is the organomolybdenum compound with the formula (C7H9)Mo(CO)4. Structurally, the compound consists of the norbornadiene bonded to a Mo(CO)4 fragment. The compound is a yellow, volatile solid. It is prepared by thermal or photochemical substitution of molybdenum hexacarbonyl.[1] The compound was originally examined as a potential antiknock agent.[2]

(Norbornadiene)molybdenum tetracarbonyl is a precursor to other derivatives of the type L2Mo(CO)4. This conversion exploits the lability of the diene ligand:[3]

(C7H9)Mo(CO)4 + 2 L → C7H9 + L2Mo(CO)4


  1. ^ Werner, Helmut; Prinz, Richard (1967). "Ein neuer Weg zur Darstellung substituierter Metallcarbonyl-Komplexe von Chrom und Molybdän". Chemische Berichte. 100: 265–270. doi:10.1002/cber.19671000131.
  2. ^ US 3093671, Ihrman, Kryn G.; Coffield, Thomas H., "Cyclic diene metal carbonyl complexes", published 1963-06-11, assigned to Ethyl Corp. 
  3. ^ Hahn, F. Ekkehardt; Wittenbecher, Lars; Le Van, Duc; Fröhlich, Roland (2000). "Evidence for an Equilibrium between an N-Heterocyclic Carbene and Its Dimer in Solution". Angewandte Chemie International Edition. 39 (3): 541–544. doi:10.1002/(SICI)1521-3773(20000204)39:3<541::AID-ANIE541>3.0.CO;2-B. PMID 10671250.