{"id":{"repo_id":"massey","oai_identifier":"oai:mro.massey.ac.nz:10179/13825"},"canonical_url":"https://search.dev.ndltd.org/etd/massey/oai:mro.massey.ac.nz:10179/13825","repository":{"repo_id":"massey","name":"Massey University","base_url":"https://mro.massey.ac.nz/server/oai/request"},"display":{"title":"The synthesis and reactivity of pnictogen ligand complexes of transition metal carbonyls : a thesis presented in partial fulfilment of the requirements for the degree of Master of Science, Chemistry/Biochemistry/Biophyisics Department, Massey University","abstract":"Metal carbonyl complexes of the type M(CO)₅L, M(CO)₄L and (M(CO)₅)₂L where M is Cr, Mo and W, and L is a pnictogen ligand ((I) or (II)). have been synthesised by the addition of L to UV-irradiated tetrahydrofuran solutions of the appropriate metal carbonyl. Complexes of the type M(CO)₃L Br (III) and M(CO)₂L₂ Br (IV) where M = Mn and L = (I) or (II) have also been synthesised by refluxing Mn(CO)₅ Br and L in a 1:1 molar ratio to form (III) and in: a 1:2 molar ratio to form (IV). The W(CO)₅L complexes react with acids HX (where X¯ = Cl¯, Br¯, I¯, BF₄¯ or PF₆¯) to give the cationic ligand complexes, W(CO)₅L HX. The conductivity of the complexes is anion dependent. The complexes were characterised by Infra-Red spectroscopy, Visible-UV spectroscopy, ³¹P nmr, ¹H nmr, ¹³C nmr, and Mass-spectra. Excess acid (e.g. HBr) cleaves the P-N bond yielding primarily W(CO)₅P(C₆H₅)₂Br and the protonated amine. The complex W(CO)₅L (where L = (I)) acts as a ligand towards CoCl₂ in the complex (W(CO)₅L)₂CoCl₂ as well as in the bridging complex (W(CO)₅)₂L.","abstract_html":"Metal carbonyl complexes of the type M(CO)₅L, M(CO)₄L and (M(CO)₅)₂L where M is Cr, Mo and W, and L is a pnictogen ligand ((I) or (II)). have been synthesised by the addition of L to UV-irradiated tetrahydrofuran solutions of the appropriate metal carbonyl. Complexes of the type M(CO)₃L Br (III) and M(CO)₂L₂ Br (IV) where M = Mn and L = (I) or (II) have also been synthesised by refluxing Mn(CO)₅ Br and L in a 1:1 molar ratio to form (III) and in: a 1:2 molar ratio to form (IV). The W(CO)₅L complexes react with acids HX (where X¯ = Cl¯, Br¯, I¯, BF₄¯ or PF₆¯) to give the cationic ligand complexes, W(CO)₅L HX. The conductivity of the complexes is anion dependent. The complexes were characterised by Infra-Red spectroscopy, Visible-UV spectroscopy, ³¹P nmr, ¹H nmr, ¹³C nmr, and Mass-spectra. Excess acid (e.g. HBr) cleaves the P-N bond yielding primarily W(CO)₅P(C₆H₅)₂Br and the protonated amine. The complex W(CO)₅L (where L = (I)) acts as a ligand towards CoCl₂ in the complex (W(CO)₅L)₂CoCl₂ as well as in the bridging complex (W(CO)₅)₂L.","abstract_has_math":false,"creators":["Wong, Simon Shu Tong"],"institution":null,"degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":1975,"date_issued":"1975","date_published":"1975","updated_at":"2026-07-27T20:17:14Z","subjects":["Metal carbonyls","Ligands"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["hdl:10179/13825"],"render_values":[{"text":"hdl:10179/13825","href":null,"code":true}]}]},"links":{"outbound_url":null,"outbound_label":null,"outbound_source":null},"metadata_groups":[{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.issued","label":"Date","values":["1975"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Metal carbonyls","Ligands"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["hdl:10179/13825"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.other","label":"Dc Description Other","values":["Metal carbonyl complexes of the type M(CO)₅L, M(CO)₄L and (M(CO)₅)₂L where M is Cr, Mo and W, and L is a pnictogen ligand ((I) or (II)). have been synthesised by the addition of L to UV-irradiated tetrahydrofuran solutions of the appropriate metal carbonyl. Complexes of the type M(CO)₃L Br (III) and M(CO)₂L₂ Br (IV) where M = Mn and L = (I) or (II) have also been synthesised by refluxing Mn(CO)₅ Br and L in a 1:1 molar ratio to form (III) and in: a 1:2 molar ratio to form (IV). The W(CO)₅L complexes react with acids HX (where X¯ = Cl¯, Br¯, I¯, BF₄¯ or PF₆¯) to give the cationic ligand complexes, W(CO)₅L HX. The conductivity of the complexes is anion dependent. The complexes were characterised by Infra-Red spectroscopy, Visible-UV spectroscopy, ³¹P nmr, ¹H nmr, ¹³C nmr, and Mass-spectra. Excess acid (e.g. HBr) cleaves the P-N bond yielding primarily W(CO)₅P(C₆H₅)₂Br and the protonated amine. The complex W(CO)₅L (where L = (I)) acts as a ligand towards CoCl₂ in the complex (W(CO)₅L)₂CoCl₂ as well as in the bridging complex (W(CO)₅)₂L."]},{"key":"dc:title","label":"Title","values":["The synthesis and reactivity of pnictogen ligand complexes of transition metal carbonyls : a thesis presented in partial fulfilment of the requirements for the degree of Master of Science, Chemistry/Biochemistry/Biophyisics Department, Massey University"]}]}],"canonical_facts":{"dc:date.issued":["1975"],"dc:description.other":["Metal carbonyl complexes of the type M(CO)₅L, M(CO)₄L and (M(CO)₅)₂L where M is Cr, Mo and W, and L is a pnictogen ligand ((I) or (II)). have been synthesised by the addition of L to UV-irradiated tetrahydrofuran solutions of the appropriate metal carbonyl. Complexes of the type M(CO)₃L Br (III) and M(CO)₂L₂ Br (IV) where M = Mn and L = (I) or (II) have also been synthesised by refluxing Mn(CO)₅ Br and L in a 1:1 molar ratio to form (III) and in: a 1:2 molar ratio to form (IV). The W(CO)₅L complexes react with acids HX (where X¯ = Cl¯, Br¯, I¯, BF₄¯ or PF₆¯) to give the cationic ligand complexes, W(CO)₅L HX. The conductivity of the complexes is anion dependent. The complexes were characterised by Infra-Red spectroscopy, Visible-UV spectroscopy, ³¹P nmr, ¹H nmr, ¹³C nmr, and Mass-spectra. Excess acid (e.g. HBr) cleaves the P-N bond yielding primarily W(CO)₅P(C₆H₅)₂Br and the protonated amine. The complex W(CO)₅L (where L = (I)) acts as a ligand towards CoCl₂ in the complex (W(CO)₅L)₂CoCl₂ as well as in the bridging complex (W(CO)₅)₂L."],"dc:identifier":["hdl:10179/13825"],"dc:subject":["Metal carbonyls","Ligands"],"dc:title":["The synthesis and reactivity of pnictogen ligand complexes of transition metal carbonyls : a thesis presented in partial fulfilment of the requirements for the degree of Master of Science, Chemistry/Biochemistry/Biophyisics Department, Massey University"],"dc:type":["Thesis"]},"updated_at":"2026-07-27T20:17:14Z"}