Manganese(i) templates for the construction of benzannulated triphosphamacrocycles

Edwards, Peter Gerald ORCID: https://orcid.org/0000-0001-6999-753X, Mahon, Mary F., Newman, Paul David ORCID: https://orcid.org/0000-0002-1808-1211, Reixach, Elisenda and Zhang, Wenjiang 2014. Manganese(i) templates for the construction of benzannulated triphosphamacrocycles. Dalton Transactions 43 , pp. 15646-15655. 10.1039/C4DT02203C

Full text not available from this repository.

Abstract

Nine-membered 1,4,7-triphosphamacrocycles with unsaturated benzo-backbones have been prepared using the [(CO)3Mn]+ unit as a template. Two synthetic methods have been employed for the macrocyclisation both of which involve the attack of a coordinated phosphide at an activated, electrophilic ortho-fluorophenyl substituent on a neighbouring pnictide donor. Addition of base to the precursor complex fac-[(CO)3Mn(dfppb)(PhPH2)]+, 1, where dfppb = 1,2-bis[di(2-fluorophenyl)phosphino]benzene, results in the direct formation of the macrocyclic compound fac-[Mn(CO)3(tribenzo-9aneP3-Ph,PhF2)]+, 3. A second precursor, namely fac-[(CO)3Mn(1,2-bpb){P(PhF)3}]+, 5, where 1,2-bpb = 1,2-bis(phosphino)benzene, undergoes spontaneous partial macrocyclisation when dissolved in THF to give the intermediate complex fac-[(CO)3Mn{H2PC6H4P(H)C6H4P(PhF)2}]+, 6, which contains a linear tridentate phosphine with the unusual combination of a primary, secondary and tertiary phosphine donor. Addition of base to 6 gives the desired macrocyclic complex fac-[Mn(CO)3(tribenzo-9aneP3-H2,PhF)]+, 7, which is converted in situ to the more stable dimethylated fac-[Mn(CO)3(tribenzo-9aneP3-Me2,PhF)]+, 8. The new complexes have been fully characterised by spectroscopic and analytical methods including single crystal X-ray structure determinations for 1, 3, 5, 6 and 8.

Item Type:	Article
Date Type:	Published Online
Status:	Published
Schools:	Chemistry
Subjects:	Q Science > QD Chemistry
Publisher:	Royal Society of Chemistry
ISSN:	1477-9226
Date of Acceptance:	23 August 2014
Last Modified:	27 Oct 2022 09:08
URI:	https://orca.cardiff.ac.uk/id/eprint/64508

Citation Data

Cited 4 times in Scopus. View in Scopus. Powered By Scopus® Data

Actions (repository staff only)

Edit Item