title: Synthesis and study of hexanuclear molybdenum clusters containing thiolate ligands.
abstract: Four hexanuclear molybdenum chloride cluster complexes containing terminal thiolate ligands have been synthesized and fully characterized. (Bu 4N) 2[Mo 6Cl 8(SEt) 6] was prepared by reacting Na 2[Mo 6Cl 8(OMe) 6] with an excess of ethanethiol in refluxing tetrahydrofuran. (PPN) 2[Mo 6Cl 8(SBu) 6], (Bu 4N) 2[Mo 6Cl 8(SBn) 6], and (Bu 4N) 2[Mo 6Cl 8(SNC 8H 6) 6] (C 8H 6NS (-) = 3-indolylthiolate) were subsequently prepared in the reaction of [Mo 6Cl 8(SEt) 6] (2-) with an excess of HSR (R = Bu, Bn or 3-indolyl). Single crystal X-ray diffraction analyses were performed on two of these complexes: (PPN) 2[Mo 6Cl 8(SEt) 6].Et 2O, crystallizes in the triclinic space group P1 with a = 12.3894(11), b = 13.7651(12), c = 15.0974(13), alpha = 103.975(2), beta = 99.690(2), gamma = 98.062(2), and Z = 1; (PPh 3Me) 2[Mo 6Cl 8(SBn) 6].2NO 2CH 3, also crystallizes in the P1 space group with a = 12.1574(16), b = 13.4441(17), c = 14.2132(18), alpha = 89.654(2), beta = 88.365(2), gamma = 71.179(2), and Z = 1. Our studies demonstrate that [Mo 6Cl 8(SEt) 6] (2-) displays luminescent properties and that the same complex undergoes substitution reactions with different thiols, as well as reaction with electrophilic reagents such as MeI.
authors.affiliation: Department of Chemistry, Campus Box 4160, Illinois State University, Normal, Illinois 61790, USA. lfszcze@ilstu.edu
authors.forename: Lisa F
authors.initials: LF
authors.lastname: Szczepura
authors.forename: Karen A
authors.initials: KA
authors.lastname: Ketcham
authors.forename: Betty A
authors.initials: BA
authors.lastname: Ooro
authors.forename: Julia A
authors.initials: JA
authors.lastname: Edwards
authors.forename: Jeffrey N
authors.initials: JN
authors.lastname: Templeton
authors.forename: David L
authors.initials: DL
authors.lastname: Cedeño
authors.forename: Alan J
authors.initials: AJ
authors.lastname: Jircitano