Issue 17, 2000
From the journal:

Journal of the Chemical Society, Dalton Transactions

Coupling of co-ordinated acetylideligands with and without CO on chalcogen-stabilised mixed-metal clusters. Synthesis and characterisation of [M2Fe3(L)2(CO)6(μ3-E)2{μ-CC(Ph)C(Ph)C}] and [M2Fe2(L)2(CO)4(μ3-E)2{μ-CC(Ph)(CO)C(Ph)C}] (L = η5-C5Me5 or η5-C5H5, M = Mo or W, E = S, Se or Te)

Pradeep Mathur,*a   Moawia O. Ahmed,a   Aswini K. Dash,a   Mrinalini G. Walawalkara  and  Vedavati G. Puranikb  

* Corresponding authors

a Chemistry Department, Indian Institute of Technology, Bombay, Powai, India
E-mail: mathur@ether.chem.iitb.ernet.in

b Physical Chemistry Division, National Chemical Laboratory, Pune, India

Abstract

Thermolysis of a toluene solution containing [Fe3(CO)9(μ3-E)2] (E = S or Se) and [M(L)(CO)3(C[triple bond, length as m-dash]CPh)], M = Mo or W, resulted in coupling of co-ordinated acetylide ligands with and without CO and formation of mixed-metal clusters [M2Fe3(L)2(CO)6(μ3-E)2{μ-CC(Ph)C(Ph)C}] (L = η5-C5Me5, M = Mo, E = S 1 or Se 2; M = W, E = S 3 or Se 4; M = W, E = Te 5; L = η5-C5H5, M = Mo, E = S 6 or Se 7; M = W, E = S 8 or Se 9 and [M2Fe2(L)2(CO)4(μ3-E)2{μ-CC(Ph)(CO)C(Ph)C}] (L = η5-C5H5, M = Mo, E = S 10 or Se 11; M = W, E = S 12 or Se 13). From the thermolysis reaction of [Mo(η5-C5H5)(CO)3(C[triple bond, length as m-dash]CPh)], the new compound [{Mo(η5-C5H5)(CO)2}2{μ-C(Ph)C(CO)C[triple bond, length as m-dash]C(Ph)}] 15 was isolated. All compounds have been characterised by IR and 1H, 13C and 77Se or 125Te NMR spectroscopy. The crystal structures of 8, 12 and 15 were elucidated by X-ray diffraction methods.

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Article information

DOI
https://doi.org/10.1039/B003517N
Article type
Paper
Submitted
03 May 2000
Accepted
26 Jun 2000
First published
07 Aug 2000

J. Chem. Soc., Dalton Trans., 2000, 2916-2922

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Coupling of co-ordinated acetylide ligands with and without CO on chalcogen-stabilised mixed-metal clusters. Synthesis and characterisation of [M2Fe3(L)2(CO)6(μ3-E)2{μ-CC(Ph)C(Ph)C}] and [M2Fe2(L)2(CO)4(μ3-E)2{μ-CC(Ph)(CO)C(Ph)C}] (L = η5-C5Me5 or η5-C5H5, M = Mo or W, E = S, Se or Te)

P. Mathur, M. O. Ahmed, A. K. Dash, M. G. Walawalkar and V. G. Puranik, J. Chem. Soc., Dalton Trans., 2000, 2916 DOI: 10.1039/B003517N

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