551
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Toda F, Tanaka K, Mak TCW. Molecular Complexes of Hydroxy Host Systems with Alcohols. X-Ray Crystal Structures of 1,1,6,6-Tetrakis(2,4-dimethylphenyl)-2,4-hexadiyne-1,6-diol–Ethanol (1:2), 1,1-Bis(2,4-dimethylphenyl)-2-butyn-1-ol–Ethanol (1:1), and 9-(1-Propynyl)-9-fluorenol–Methanol (1:1). BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1985. [DOI: 10.1246/bcsj.58.2221] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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552
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Toda F, Tanaka K, Tagami Y, Mak TCW. INCLUSION PROPERTIES OFN,N,N′,N′-TETRAISOPROPYLOXAMIDE AND CRYSTAL STRUCTURE OF ITS 1:1 COMPLEX WITH 1-METHYLNAPHTHALENE. CHEM LETT 1985. [DOI: 10.1246/cl.1985.195] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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553
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Kozikowski AP, Yuen PW, Mak TCW, Che CM, Wong KY, Lowe G, Parratt MJ. Corrigenda. ACTA ACUST UNITED AC 1985. [DOI: 10.1039/c39850001548] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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554
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Mak TCW, Che CM, Wong KY. High-valent dioxo-ruthenium(VI) complexes of macrocyclic tetradentate tertiary amines: X-ray crystal structures of trans-[Ru VI (15-tmc)O2](ClO4)2(15-tmc = 1,4,8,12-tetramethyl-1,4,8,12-tetra-azacyclopentadecane) and trans-[Ru VI (16-tmc)O2](ClO4)2(16-tmc = 1,5,9,13-tetramethyl-1,5,9,13-tetra-azacyclohexadecane). ACTA ACUST UNITED AC 1985. [DOI: 10.1039/c39850000986] [Citation(s) in RCA: 30] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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555
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Che CM, Wong KY, Mak TCW. Oxo-ruthenium(V) complexes of macrocyclic tetradentate tertiary amines that function as active electrochemical oxidative catalysts, and X-ray crystal structure of trans-[Ru IV (tmc)O(Cl)]ClO4(tmc = 1,4,8,11-tetramethyl-1,4,8,11-tetra-azacyclotetradecane). ACTA ACUST UNITED AC 1985. [DOI: 10.1039/c39850000988] [Citation(s) in RCA: 34] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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556
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Che CM, Wong KY, Mak TCW. Characterization of a high-valent ruthenyl (RuIVO) cation stabilized by the macrocyclic 1,4,8,11-tetramethyl-1,4,8,11-tetra-azacyclotetradecane (tmc) ligand: crystal and molecular structure of trans-[RuIV(tmc)O(MeCN)][PF6]2. ACTA ACUST UNITED AC 1985. [DOI: 10.1039/c39850000546] [Citation(s) in RCA: 33] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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557
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Kennard CHL, O'Reilly EJ, Smith G, Mak TCW. Divalent Metal Complexes of 2-Formylphenoxyacetic Acid: The Crystal Structures of 2-Formylphenoxyacetic Acid, and the Isomorphous Cobalt(II) and Zinc(II) 2-Formylphenoxyacetates. Aust J Chem 1985. [DOI: 10.1071/ch9851381] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The crystal structures of 2-formylphenoxyacetic acid ( ofpaH ), tetraaquabis (2-formylphenoxyacetato)-cobalt(II) (1) and tetraaquabis (2- formylphenoxyacetato )zinc(II) (2) have been determined by X-ray diffraction and refined to residuals R 0.039, 0.058 and 0.045 for 1197, 1178 and 1230 observed reflections respectively. 2-Formylphenoxyacetic acid crystallizes in a monoclinic cell, space group P21/n with a 8.066(2), b 7.375(1), c 14.206(2) Ǻ, β 98.12(1)° and Z 4. The planar molecules form unusual hydrogen-bonded chain polymers (O…O 2.694(3)Ǻ] linked through the carboxyl groups. The complexes (1) and (2) are isomorphous, the comparative cells being a 5.036(1), b 13.463(3), c 15.083(4) Ǻ, β 96.88(2)° for (1), and a 5.044(1), b 13.481(3), c 15.055(4) Ǻ, β 96.95(2)° for (2), with Z 2 and space group P21. The complexes have four waters and two trans-related carboxyl oxygens [mean M-O distances 2.129(5) and 2.117(3) Ǻ respectively] completing almost regular octahedral stereochemistries . The nickel(II) complex [Ni( ofpa )(H2O)4] is probably not isostructural with (1) and (2), and the copper(II) complex is also different, with formula [Cu( ofpa )2(H2O)2].
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558
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Toda F, Tanaka K, Mak TCW. MUTUAL OPTICAL RESOLUTION OF BIS-β-NAPHTHOL AND SULFOXIDES. ABSOLUTE CONFIGURATION AND CRYSTAL STRUCTURE OF A 1:1 MOLECULAR COMPLEX. CHEM LETT 1984. [DOI: 10.1246/cl.1984.2085] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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559
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560
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Mak TCW, Jasim KS, Chieh C. [Mo4(η3-S)4(η-S2CNEt2)2(S2CNEt2)4], eine Verbindung mit cubanähnlichem Mo4S4-Cluster. Angew Chem Int Ed Engl 1984. [DOI: 10.1002/ange.19840960510] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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561
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Mak TCW, Jasim KS, Chieh C. [Mo4(μ3-S)4(μ-S2CNEt2)2(S2CNEt2)4], a Compound Containing a Cubane-Like Mo4S4 Cluster. ACTA ACUST UNITED AC 1984. [DOI: 10.1002/anie.198403911] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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562
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Mak TCW, Jasim KS, Chieh C. Spectroscopic and structural studies of some bisdithiocarbamates and cyclic thiones. CAN J CHEM 1984. [DOI: 10.1139/v84-134] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The syntheses of bisdithiocarbamates from diamines and CS2 are described, and possible complications in these reactions explained. Ethylenebisdithiocarbamate was prepared from ethylenediamine and CS2 in basic solution, but the same reaction using o-phenylenediamine led to a cyclization product, o-phenyleneimidazolidine-2-thione or benzimidazolidine-2-thione. In these reactions, if slightly insufficient amounts of CS2 are used, bisdithiocarbamates will not be formed; instead, the cyclization reactions will occur, leading to the formation of thiones. Crystallographic studies were carried out for disodium ethylenebisdithiocarbamate and imidazolidine-2-thione or ethylenethiourea. The hexahydrate crystals of the former, Na2[S2CNHCH2CH2NHCS2]•6H2O, F.W. 364.42, are triclinic with a = 5.766(1), b = 7.212(1), c = 10.074(1) Å, α = 88.53(1), β = 98.41(1), γ = 105.50(1)°, V = 399.3(1) Å3, and Z = 1. The structure was determined from 2259 unique reflections, (2θ[Mo-Kα] < 65°) to an R factor of 0.022. The bisdithiocarbamate ion has a center of symmetry between the two CH2 groups, and therefore the two NCS22− groups are separated as far apart as possible. Each Na+ ion is octahedrally surrounded by five water molecules with Na … O distances ranging from 2.373 to 2.446 Å, and a sulphur atom of the thiocarbamate group with Na … S = 3.060 Å. The two C—S bonds of the CS2− group are 1.710(1) and 1.727(1) Å, and [Formula: see text]. Crystals of imidazolidine-2-thione, (CH2NH)2CS, are monoclinic, with a = 5.800(1), b = 14.516(3), c = 5.780(1) Å, β = 101.33(2)°, V = 477.2(2) Å3, and Z = 4. This structure, first determined thirty years ago, has been refined by full-matrix least-squares to R = 0.031, using 975 new Mo-Kα data.
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563
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Law KW, Lai TF, Sammes MP, Katritzky AR, Mak TCW. The synthesis and chemistry of azolenines. Part 2. A general synthesis of pyrrole-2-carboxylic acid derivatives by the reaction of 2H-azirines with enamines, and the crystal and molecular structure of ethyl 3-phenyl-4,5,6,7-tetrahydroindole-2-carboxylate. ACTA ACUST UNITED AC 1984. [DOI: 10.1039/p19840000111] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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564
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Toda F, Tanaka K, Mak TCW. CRYSTAL STRUCTURE OF A 1:2 MOLECULAR COMPLEX OF 2,5-BIS(2,4-DIMETHYLPHENYL)HYDROQUINONE AND ETHANOL. CHEM LETT 1983. [DOI: 10.1246/cl.1983.1699] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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565
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Chan TL, Mak TCW. X-Ray crystallographic study of guest–molecule orientations in the β-hydroquinone clathrates of acetonitrile and methyl isocyanide. ACTA ACUST UNITED AC 1983. [DOI: 10.1039/p29830000777] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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566
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Chang HM, Chiang TC, Mak TCW. Isolation and structure elucidation of abruslactone a: a new oleanene-type triterpene from the roots and vines of Abrus precatorius L. ACTA ACUST UNITED AC 1982. [DOI: 10.1039/c39820001197] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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567
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568
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Ho WC, Mak TCW. Refinement of the crystal structure of hydroquinone-hydrogen sulfide clathrate. ACTA ACUST UNITED AC 1982. [DOI: 10.1524/zkri.1982.161.1-2.87] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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569
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Mak TCW. Orientation of methanol enclathrated in the β-hydroquinone lattice: an X-ray crystallographic study. ACTA ACUST UNITED AC 1982. [DOI: 10.1039/p29820001435] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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570
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Cachia P, Darby N, Mak TCW, Money T, Trotter J. Cyclisation during an attempted Meyer–Schuster rearrangement. CAN J CHEM 1980. [DOI: 10.1139/v80-183] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The structure of a tricyclic diketone produced during Meyer–Schuster rearrangement has been established by chemical and X-ray crystallographic evidence.
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571
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Chan TL, Mak TCW, Trotter J. Crystal structure of a 1 : 2 channel inclusion adduct of 5-methylbenzene-1,3-dicarbaldehyde bis-(p-tolylsulphonylhydrazone) and benzene. ACTA ACUST UNITED AC 1980. [DOI: 10.1039/p29800000672] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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572
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Mak TCW, Ladd MFC, Povey DC. Molecular and crystal structure of hexamethylenetetramine oxide. ACTA ACUST UNITED AC 1979. [DOI: 10.1039/p29790000593] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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573
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Peter Kutney J, P. Kutney J, C. W. Mak T, Mostwicz D, Trotter J, R. Worth B. Studies in the Dihydropyridine Series IV. Bipiperidyl Synthons via Coupling of Dihydropyridinetricarbonylchromium (0) Complexes. HETEROCYCLES 1979. [DOI: 10.3987/r-1979-12-1517] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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574
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Au MK, Mak TCW, Chan TL. Transannular brominolysis of 5,7,12,14-tetrahydrodibenzo [c,h][1,6] dithiecins by pyridinium hydrobromide perbromide. ACTA ACUST UNITED AC 1979. [DOI: 10.1039/p19790001475] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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575
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