Emeritus Professor Mark J. Winter
School of Mathematical and Physical Sciences
Emeritus Professor of Chemistry
+44 114 222 9304
Full contact details
School of Mathematical and Physical Sciences
Dainton Building
13 Brook Hill
91直播
S3 7HF
- Profile
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Professor Mark Winter obtained his BSc in Chemistry from the University of Bristol in 1975, followed by a PhD in Chemistry from the same institution in 1978 with Prof Selby Knox and Prof Gordon Stone.
He was a SERC-NATO Postdoctoral Fellow working with Prof Peter Vollhardt at the University of California at Berkeley (USA) from 1978 to 1980. In 1980 he was appointed as a temporary lecturer at the University of 91直播, where he is now the Director of Studies in the Department of Chemistry.
Mark believes firmly that molybdenum is the best element in the periodic table and that he doesn't play enough cricket. In 2014 he was promoted to Professor.
Awards
- RSC Sir Edward Frankland Fellow (1986/1987)
- Royal society of chemistry HE Teaching Award winner (1998)
- Senate Award Fellow (Sustained Excellence in Learning and Teaching)
- Qualifications
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- MRSC
- Research interests
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Migration Reactions
Hydrogen Transfer ReactionsMigration reactions are an important fundamental class of reactions in organometallic chemistry. The migration of alkyl to carbonyl is well known but we are interested in migrations of hydride, alkyl, and other groups to metal coordinated carbene in processes which result in new alkyl ligands. To date, most of our work has involved molybdenum, tungsten, iron, and ruthenium.
Such reactions are models for some important C锛岺 and C锛岰 bond formations but surprisingly little is known about these rearrangements. We are attempting to understand the the mechanisms by which they proceed. These migrations are the reverse of 伪-elimination reactions and we find that some of these compounds 伪-eliminate under photochemical excitation to regenerate the initial carbene starting materials.
Vinylidene chemistry
Cartogram of the Molar Volume of the ElementsVinylidene complexes contain the M=C=CR2 group and are implied by some in Fischer Tropsch processes. We are examining their tendencies towards the migration processes indicated above. Further, we have now developed good routes to chiral molecules of the type CpMXL(=C=CR2) and examining their use for fine chemical synthesis. Much of this work is challenging given the sensitivity of many of the compounds.
Chemical information and data visualisation
I am interested in applications of the world-wide web for chemistry. I developed a number of well known chemical information sources including WebElements and Chemdex. I am working on software to extend "social network" concepts to molecules. Visualisation of chemical data is often a challenge and I have produced new ways of visualising periodicity data for the periodic table including cartograms (illustrated).
- Publications
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Journal articles
- . Journal of Chemical Education, 88(11), 1507-1510.
- Syntheses of neutral iron, ruthenium and manganese half-sandwich vinylidene complexes. Crystal structure of Fe(SnPh3)(CO)(= C = CHPh)(eta-C5H5). CHEM COMMUN(13), 1231-1232.
- Cyclopropanation in the reaction of [M(CO)(3)Tp](-) [M = Mo, W; Tp = hydridotris(pyrazolyl)borate] with I(CH2)(3)I and the insertion of isocyanide into metal-acyl bonds. CHEM COMMUN(6), 491-492.
- Methyl to alkylidene migration within trans-[WMe(=CHPh)(CO)(2)(eta-C5H5)]. CHEM COMMUN(15), 1765-1766.
- SURFING THE CHEMICAL NET. CHEM BRIT, 31(9), 685-689.
- DEVELOPMENTS ON THE WEB-BASED PERIODIC-TABLE DATABASE OF ELEMENT PROPERTIES CALLED WEBELEMENTS. ABSTR PAP AM CHEM S, 210, 39-COMP.
- SYNTHESES OF ACYLOXY CARBENE COMPLEXES M(SNPH(3))(CO)(N)(=C(OCOR)PH)(ETA-C5H5) (M=MO,W, N=2, R=ME M=FE, RU, N=1, R=ME, PH, BU(T)) AND X-RAY CRYSTAL-STRUCTURES OF FE(SNPH(3))(CO)(=C(OCOR)PH)(ETA-C5H5) (R=ME, PH). J CHEM SOC CHEM COMM(15), 1511-1512.
- SYNTHESIS OF HETEROCYCLIC MOLYBDENUM CARBENE COMPLEXES USING HALOALKYL-SUBSTITUTED EPOXIDES. J ORGANOMET CHEM, 494(1-2), C12-C14.
- NEW ROUTES TO MOLYBDENUM AND TUNGSTEN CARBYNE COMPLEXES [M(CO)(2)(CPH)(ETA-C(5)H(4)R)] (M=MO OR W, R=SNPH(3) - M=W, R=H). J CHEM SOC CHEM COMM(5), 515-516.
- CHEMICAL APPLICATIONS OF THE WORLD-WIDE-WEB SYSTEM. J CHEM SOC CHEM COMM(17), 1907-1910.
- SYNTHESIS OF HYDROXYMETHYL LACTONES AND SPIROKETALS VIA CYCLIZATION OF EPOXY OXACARBENE COMPLEXES. TETRAHEDRON LETT, 35(36), 6717-6720.
- METHYL AND BENZYL C-H ACTIVATION THROUGH CARBENE INSERTION IN MR(CO)2(CARBENE)(ETA-C5H5) (M = MO OR W R = ME OR PHCH2). J CHEM SOC CHEM COMM(7), 533-535.
- HYDRIDE TO CARBENE MIGRATION IN THE CPMH(=C(OET)PH)(CO)2 (M = MO, W) SYSTEM AND SUBSEQUENT REARRANGEMENT OF THE CONSEQUENT PRODUCTS TO ETA-3-BENZYL COMPLEXES - X-RAY CRYSTAL-STRUCTURE OF THE ETA-3-BENZYL CPW(CO)2(ETA-3-C6H5CH(OET)). J ORGANOMET CHEM, 418(3), C39-C42.
- SYNTHESIS AND X-RAY CRYSTAL-STRUCTURE OF THE DIMOLYBDENUM ACETALDEHYDE COMPLEX (MO2(ETA-MECHO)(CO)4(ETA-C5H5)2). J CHEM SOC DALTON(9), 2217-2221.
- BENZOYL-CARBENE COUPLING BY [CPM(COPH)(CO)2(=C(CH2)3NME)] (M = MO, W). J CHEM SOC CHEM COMM(14), 912-914.
- HYDRIDE TO CARBENE MIGRATION IN THE CPMH(=C(NHET)PH)(CO)2 (M = MO, W) SYSTEM - X-RAY CRYSTAL-STRUCTURE OF CPMO(ETA-2-CH(PH)NHET)(CO)2. J ORGANOMET CHEM, 410(2), C21-C24.
- REACTION OF [WME(CO)3(ETA-C5H5)] WITH LIBHET3 - FORMATION AND REACTIONS OF THE ANIONIC FORMYL TRANS-[W(CHO)ME(CO)2(ETA-C5H5)] AND THE ANIONIC HYDRIDO ACYL TRANS-[WH(COME)(CO)2(ETA-C5H5)]. J CHEM SOC DALTON(6), 1427-1432.
- FORMATION OF THE ALKOXYALKYL COMPLEXES [M(CHME(OME))-(CO)2(ETA-C5H4R)] (M = MO, R = H-M = W, R = H OR ME) AND THEIR TRANSFORMATIONS BY LOSS OF MEOH INTO ETA-3-PROPENOYL OR VINYL COMPLEXES - CRYSTAL-STRUCTURES OF [MO(CHME(PPH3))-(CO)2(PPH3)(ETA-C5H5)]BF4, [MO(ETA-3-CH2CHC=O)(CO)(PPH3)-(ETA-C5H5)] AND [W(SIGMA-CH=CH2)(CO)2(PPH3)(ETA-C5H4ME)]. J CHEM SOC DALTON(4), 1117-1128.
- . Mendeleev Communications, 1(3), 99-101.
- SYNTHESIS AND REACTIONS OF THE CARBENE COMPLEXES [M(SNPH3) (CO)2(=C(OET)PH)L] (M=MO OR W-L=ETA-C5H5,ETA-C5ME5 OR INDENYL), [M(SNPH3)(CO)2(=C(OET)ME)(ETA-C5H5)](M=MO OR W) AND [MI(CO)2(=C(OET)R)(ETA-C5H5)] (M=MO OR W,R = ME OR PH) - X-RAY CRYSTAL-STRUCTURES OF [MO(SNPH3) (CO)2(=C(OET)PH)(ETA-C5ME5)] AND [WI(CO)2(=C(OET)PH)(ETA-C5H5)]. J CHEM SOC DALTON, 749-758.
- CARBENE FORMATION IN THE REACTIONS OF LFE((CH2)3BR)(CO)2 (L = CP, CP-STAR) WITH I- - X-RAY CRYSTAL-STRUCTURES OF CPFEI(CO)(=C(CH2)3O) AND CPFEI(CO)(=CCME2(CH2)2O) - ANALYSIS OF THE CARBENE ORIENTATIONS. ORGANOMETALLICS, 9(9), 2621-2628.
- . ChemInform, 21(33).
- CARBENE FORMATION FROM CPM(SNPH3)(CO)2 (M = FE, RU) - CRYSTAL-STRUCTURES OF CPFEI(CO)(=C(OET)PH), CPRUI(CO)(=C(OET)PH) AND CPRUI(CO)(=C(NHME)PH). J ORGANOMET CHEM, 394(1-3), 349-364.
- . ChemInform, 21(1).
- . ChemInform, 20(52).
- . ChemInform, 20(46).
- SYNTHESIS OF MOLYBDENUM AND TUNGSTEN NONHETEROATOM STABILIZED CARBENE COMPLEXES M(SNPH3)(CO)2(=CPHR)(ETA-C5H5) (M = MO, W, R = H, ME) AND AN EXAMPLE OF TRIPHENYLTIN TO NONHETEROATOM STABILIZED CARBENE MIGRATION. J CHEM SOC CHEM COMM(8), 457-458.
- SYNTHESIS AND REACTIONS OF THE TUNGSTEN NONHETEROATOM-STABILIZED CARBENE ANION [CPW(CO)2(=CHPH)]-. J ORGANOMET CHEM, 361(1), C18-C20.
- VISIBLE-LIGHT PHOTOCHEMICAL REVERSAL OF HYDRIDE TO CARBENE MIGRATION. POLYHEDRON, 8(13-14), 1863-1864.
- THE INTERACTION OF ORGANOTRANSITION METAL FRAGMENTS WITH OXAAZAMACROCYCLES - SYNTHESIS AND X-RAY CRYSTAL-STRUCTURE OF MO(CO)3[O-EN-N-PYN-H4].CH2CL2. POLYHEDRON, 8(13-14), 1857-1858.
- VINYL TO CARBONYL MIGRATION AT MOLYBDENUM. POLYHEDRON, 8(13-14), 1859-1860.
- SYNTHESES AND REACTIONS OF LM(SNPH3)(CO)2(=C(OET)PH) (L=C5ME5 OR ETA-5-C9H7, M=MO OR W). POLYHEDRON, 8(13-14), 1861-1862.
- UNSATURATED DIMETAL CYCLOPENTADIENYL CARBONYL-COMPLEXES. ADV ORGANOMET CHEM, 29, 101-162.
- HYDRIDE TO CARBENE MIGRATIONS. POLYHEDRON, 8(13-14), 1583-1588.
- SYNTHETIC AND STRUCTURAL STUDIES ON ORGANOMOLYBDENUM AND ORGANOTUNGSTEN COMPLEXES CONTAINING BISMUTH - X-RAY CRYSTAL-STRUCTURES OF [BICL(MO(CO)3(ETA-C5H5))2] AND [BICL(MO(CO)2(CNBUT)(ETA-C5H5))2]. J CHEM SOC DALTON(12), 2941-2951.
- . ChemInform, 19(45).
- . ChemInform, 19(39).
- PENTAMETHYLCYCLOPENTADIENYL MOLYBDENUM AND TUNGSTEN CARBENE COMPLEXES - X-RAY CRYSTAL-STRUCTURES OF CIS-[MOL(CO)2(=C(CH2)3O)(ETA-C5ME5)] AND TRANS-[MOL(CO)2(=C(CH2)3O)(ETA-C5ME5)]. J CHEM SOC DALTON(6), 1449-1456.
- THE REACTION OF CPWME(CO)3 WITH LIET3BH. FORMATION OF THE FORMYL COMPLEX TRANS-[CPWME(CHO)(CO)2]- AND THE (HYDRIDO) (ACYL) COMPLEX TRANS-[CPWH(COME)(CO)2]-. J ORGANOMET CHEM, 342(1), C5-C9.
- DITROPYLMOLYBDENUM COMPLEXES BY THE SODIUM REDUCTION OF [MO(CO)3(ETA-C7H7)][BF4] - X-RAY CRYSTAL-STRUCTURE OF THE DITROPYL COMPLEX (MO(CO)3)2(ETA-6, ETA'6-C14H14). J ORGANOMET CHEM, 333(1), 61-69.
- . ChemInform, 18(26).
- MIGRATIONS TO CARBENE AT MOLYBDENUM AND TUNGSTEN. ABSTR PAP AM CHEM S, 193, 28-INOR.
- . ChemInform, 18(9).
- . ChemInform, 18(9).
- THE ADDITION OF ISONITRILES TO [(MO(CO)2(ETA-C5H5))2], [(W(CO)2(ETA-C5H5))2] - SYNTHESES AND PROPERTIES OF [M2(MU-ETA-2-CNR)(CO)4(ETA-C5H5)2] (M = MO OR W, R = ME OR BUT) AND [(MO(CNME)(CO)2(ETA-C5H5))2], [(MO(CNBUT)(CO)2(ETA-C5H5))2] - X-RAY CRYSTAL-STRUCTURES OF [MO2(MU-ETA-2-CNBUT)(CO)4(ETA-C5H5)2] AND [(MO(CNBUT)(CO)2(ETA-C5H5))2]. J CHEM SOC DALTON(2), 341-348.
- REACTIONS OF THE METALLABROMOALKANE [MO((CH2)3BR)(CO)3(ETA-C5H5)] AND THE CARBENE COMPLEXES TRANS-[MOI(=C(CH2)3O)(CO)2(ETA-C5H4R)](R=H OR ME) WITH LI(BET3H) - THE SYNTHESIS (R=H OR ME) AND X-RAY STRUCTURE (R=ME) OF [MO(CH(CH2)3O)(CO)2(ETA-C5H4R)] CONTAINING AN UNUSUAL OXYGEN MOLYBDENUM DONOR INTERACTIONH. J CHEM SOC DALTON(10), 2119-2126.
- SYNTHESES AND REACTIONS OF ACYCLIC AND CYCLIC CARBENE COMPLEXES CIS-[MI(=CMENHME)(CO)2(ETA-C5H5)](M=MO OR W) AND CIS-[MI(=C(CH2)NNME)(CO)2(ETA-C5H5)](M=MO,N=3 OR 4-M=W,N=3) OBTAINED THROUGH ALKYL MIGRATION TO METHYL ISOCYANIDE COORDINATED TO MOLYBDENUM OR TUNGSTEN - X-RAY STRUCTURE OF CIS-[MOI(=C(CH2)3NME)-(CO)2(ETA-C5H5)]O. J CHEM SOC DALTON(10), 2127-2135.
- HYDRIDE TO CARBENE MIGRATION AT MOLYBDENUM - THE ISOMERIZATION OF MO(H)(=C[CH2]3NME)(CO)2(ETA-C5H5) TO "MO(CO)2(ETA2-CH[CH2]3NME)(ETA-C5H5). J CHEM SOC CHEM COMM(15), 1185-1186.
- CYCLIC CARBENE COMPLEXES OF THE TYPE CIS-MI[CN(ME)(CH2)NCH2](CO)2(ETA-C5H5) (M = MO, N = 2 OR 3, M = W, N = 2) - THEIR SYNTHESES AND REACTIONS OF THE MOLYBDENUM SYSTEMS WITH LIET3BH. POLYHEDRON, 5(1-2), 435-437.
- ACETALDEHYDE COMPLEXES OF MOLYBDENUM. POLYHEDRON, 5(1-2), 451-459.
- SYNTHESIS OF ANIONIC MOLYBDENUM AND TUNGSTEN CARBENE COMPLEXES OF THE TYPE [M(CARBENE)(CO)2(ETA-C5H5)]-(M = MO OR W) BY THE SODIUM NAPHTHALIDE REDUCTION OF IODO CARBENE COMPLEXES. J CHEM SOC CHEM COMM(24), 1744-1745.
- CYCLIC CARBENE FORMATION THROUGH ALKYL MIGRATION TO MOLYBDENUM COORDINATED ISONITRILE, SYNTHESIS AND X-RAY STRUCTURE OF CIS-MOI(C(NME)[CH2]2CH2)(CO)2(ETA-C5H5) - AN EXAMPLE OF A STERICALLY BLOCKED CIS-TRANS ISOMERIZATION FOR THE [MO(X)(L)(CO)2(ETA-C5H5)] SYSTEM. J ORGANOMET CHEM, 284(1), C1-C4.
- REACTIONS OF HYDRIDE REAGENTS WITH ALKYLMOLYBDENUM CARBONYL-COMPLEXES - REACTION OF LIBHET3 WITH [MOME(CO)3(NORMAL-C5H5)], FORMATION OF AN ANIONIC ACETALDEHYDE COMPLEX, AND A STOICHIOMETRIC CYCLE FOR THE SYNTHESIS OF ACETALDEHYDE. J CHEM SOC DALTON(9), 1815-1820.
- AN EXAMPLE OF ACETALDEHYDE BRIDGING 2 METAL ATOMS - SYNTHESES AND THE X-RAY CRYSTAL-STRUCTURE OF "MO2(CO)4(MU,ETA-2-MECHO)(ETA-C5H5)2. J CHEM SOC CHEM COMM(20), 1360-1361.
- THE REACTION OF MOME(CO)3(ETA-C5H5) WITH LIET3BH, FORMATION OF AN ANIONIC ETA-2-ACETALDEHYDE MOLYBDENUM COMPLEX VIA FORMYL ALKYL AND HYDRIDO ACYL MOLYBDENUM INTERMEDIATES. J CHEM SOC CHEM COMM(7), 420-421.
- REACTIONS OF METALLABROMOALKANES [M((CH2)NBR)(CO)3(ETA-C5H5)] (M=MOORW,N=3OR4) WITH TRANSITION-METAL ANIONS - DIMETALLAALKANE AND CYCLIC CARBENE COMPLEX-FORMATION - CRYSTAL AND MOLECULAR-STRUCTURES OF [(ETA-C5H5)(OC)3MO((CH2)4)MO(CO)3(ETA-C5H5)] AND [(ETA-C5H5)(OC)3MOW(CO)2(C-O-(CH2)2CH2)(ETA-C5H5)]. J CHEM SOC DALTON(2), 273-278.
- THERMALLY INDUCED DIASTEREOISOMERIZATION OF (CYCLOBUTADIENE) COBALT COMPLEXES AS A PROBE FOR THE REVERSIBILITY OF THEIR FORMATION FROM COMPLEXED ALKYNES. ORGANOMETALLICS, 3(8), 1177-1187.
- AN UNUSUAL MOLYBDENUM-OXYGEN INTERACTION IN THE PRODUCT FROM REACTION OF MO([CH2]3BR)(CO)3(ETA-C5H4R) (R = H, ME) WITH LIET3BH - SYNTHESIS AND X-RAY STRUCTURE OF MO(CO)2(ETA-2-CH.O.[CH2]2CH2)(ETA-C5H4ME). J CHEM SOC CHEM COMM(15), 831-833.
- CYCLIC CARBENE COMPLEXES OF MOLYBDENUM AND TUNGSTEN - CRYSTAL AND MOLECULAR-STRUCTURE OF [MOL(CO)2(CO(CH2)2CH2)(ETA-C5H5)]. J CHEM SOC DALTON(11), 2397-2403.
- METAL CYCLIC CARBENE COMPLEXES - A MOLYBDENUM COMPLEX OF 2-OXACYCLOPENTYLIDENE - SYNTHESIS AND X-RAY STRUCTURE OF [MOL(CO)2(C4H6O)(ETA-C5H5)]. J CHEM SOC CHEM COMM(4), 215-217.
- . Dalton Transactions.
- . ChemInform, 26(17), no-no.
- . ChemInform, 26(5), no-no.
- . ChemInform, 25(23), no-no.
- . ChemInform, 25(17), no-no.
- . ChemInform, 23(28), no-no.
- . ChemInform, 22(23), no-no.
Chapters
- Teaching interests
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Molecular Structure and Bonding; Transition Metal Chemistry, Internet.
- Teaching activities
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Undergraduate and postgraduate taught modules
- Molecules (Level 1)
This course introduces methods of predicting molecular shape (VSEPR) and models with which to interpret the bonding in simple molecules. - Introduction to d- and f-Block Elements 1 (Level 1)
This course introduces the concept of metal complexes, examines their geometric and electronic structures, and explains why metal complexes are often coloured materials with unusual magnetic properties. - d- and f-Block Elements 1 (Level 2)
This lecture course addresses how physical and bonding properties of transition metal complexes are, to a large extent, defined by their d-orbitals (and f-orbitals as appropriate). The course moves on to discuss distortions to metal complexes, the electronic nature of bonding of metals to ligands, and metal-metal bonds (including metal-metal quadruple bonds).
Support Teaching:
- Skills for Success: Database Project.
- Molecules (Level 1)