Synthesis, structure and characterisation of magnesium and calcium beta-diketonate complexes [Ca-3(tmhd)(6)] and [Ca-2(tmhd)(4)(EtOH)(2)] (Htmhd=2,2,6,6-tetramethylheptane-3,5-dione)

被引:36
作者
Arunasalam, VC
Drake, SR
Hursthouse, MB
Malik, KMA
Miller, SAS
Mingos, DMP
机构
[1] UNIV WALES COLL CARDIFF, DEPT CHEM, CARDIFF CF1 3TB, S GLAM, WALES
[2] UNIV LONDON IMPERIAL COLL SCI & TECHNOL, DEPT CHEM, LONDON SW7 2AY, ENGLAND
来源
JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS | 1996年 / 12期
关键词
D O I
10.1039/dt9960002435
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The reaction of the oligomeric Group 2 metal ethoxide complexes [{Mg(OEt)(2)}(n)] and [{Ca(OEt)(2)(EtOH)(4)}(n)] with 2 equivalents of 2,2,6,6-tetramethylheptane-3,5-dione (Htmhd) yielded the homoleptic beta-diketonate compounds [{M(tmhd)(2)}(n)] (M = Mg 1 or Ca 2). An intermediate en route to complex 2 is the ethanol-solvated species [Ca-2(tmhd)(4)(EtOH)(2)] 3. The reaction of 1 with triglyme (2,5,8,11-tetraoxadodecane, C8H18O4) yielded the air- and moisture-stable derivative [{[Mg(tmhd)(2)](2)(C8H18O4)}(n)] 4. The calcium complexes 2 and 3 were characterised structurally by X-ray crystallography: 2 is the first structurally characterised homoleptic beta-diketonate of calcium and has a novel triangular core, with all the calcium ions six-co-ordinate and held together by tmhd ligands in a wide range of co-ordinating modes; 3 has a dimeric structure with both chelating and bridging tmhd ligands and two terminal ethanol molecules.
引用
收藏
页码:2435 / 2442
页数:8
相关论文
共 56 条
  • [1] SYNTHESIS AND CHARACTERIZATION OF THE FIRST GROUP 2 MIXED BETA-DIKETONATE ALKOXIDE COMPLEXES - X-RAY CRYSTAL-STRUCTURES OF [CA-4(TMHD)(4)(OET)(4)(ETOH)(4)],[CA-4(TMHD)(6)(OCH2 CH(2)NME(2))(2)], AND [H2BA4(TMHD)(6)(OCH2CH2OPRI)(4)]
    ARUNASALAM, VC
    BAXTER, I
    DRAKE, SR
    HURSTHOUSE, MB
    MALIK, KMA
    OTWAY, DJ
    [J]. INORGANIC CHEMISTRY, 1995, 34 (21) : 5295 - 5306
  • [2] ARUNASALAM VC, UNPUB
  • [3] VAPOR-PHASE TRANSPORT OF BARIUM BETA-DIKETONATES IN THE DEPOSITION OF OXIDES AND THE ISOLATION AND STRUCTURAL CHARACTERIZATION OF A NOVEL HEXAMERIC CLUSTER OF 2,2,6,6-TETRAMETHYLHEPTANE-3,5-DIONATO-BARIUM(II)
    AULD, J
    JONES, AC
    LEESE, AB
    COCKAYNE, B
    WRIGHT, PJ
    OBRIEN, P
    MOTEVALLI, M
    [J]. JOURNAL OF MATERIALS CHEMISTRY, 1993, 3 (12) : 1203 - 1208
  • [4] EFFECT OF POLYETHER LIGANDS ON STABILITIES AND MASS-TRANSPORT PROPERTIES OF A SERIES OF GADOLINIUM(III) BETA-DIKETONATE COMPLEXES
    BAXTER, I
    DRAKE, SR
    HURSTHOUSE, MB
    MALIK, KMA
    MCALEESE, J
    OTWAY, DJ
    PLAKATOURAS, JC
    [J]. INORGANIC CHEMISTRY, 1995, 34 (06) : 1384 - 1394
  • [5] THE X-RAY CRYSTAL-STRUCTURES OF [CA(HFA)2(OH2)2] AND [BA(HFA)2(OH2)] (HHFA=1,1,1,5,5,5-HEXAFLUOROPENTANE-2,4-DIONE)
    BRADLEY, DC
    HASAN, M
    HURSTHOUSE, MB
    MOTEVALLI, M
    KHAN, OFZ
    PRITCHARD, RG
    WILLIAMS, JO
    [J]. JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS, 1992, (07) : 575 - 576
  • [6] METAL ALKOXIDES AS PRECURSORS FOR ELECTRONIC AND CERAMIC MATERIALS
    BRADLEY, DC
    [J]. CHEMICAL REVIEWS, 1989, 89 (06) : 1317 - 1322
  • [7] BRADLEY DC, 1978, METAL BETA DIKETONAT
  • [8] PREPARATION, CRYSTAL AND MOLECULAR-STRUCTURE OF A HYDROCARBON SOLUBLE, VOLATILE OXO-ALKOXIDE OF BARIUM - H4BA6(MU-6-O)(OCH2CH2OCH3)14
    CAULTON, KG
    CHISHOLM, MH
    DRAKE, SR
    HUFFMAN, JC
    [J]. JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS, 1990, (21) : 1498 - 1499
  • [9] SYNTHESIS AND MOLECULAR-STRUCTURE OF A MONONUCLEAR BARIUM ARYLOXIDE ETHANOLAMINE COMPLEX, BA(2,6-BUT2C6H3O)2(HOCH2CH2NME2)4.2C7H8, EXHIBITING EXTENSIVE HYDROGEN-BONDING
    CAULTON, KG
    CHISHOLM, MH
    DRAKE, SR
    FOLTING, K
    [J]. INORGANIC CHEMISTRY, 1991, 30 (07) : 1500 - 1503
  • [10] HOW DO 2 C-C DOUBLE-BONDS ADD TO ONE M-M TRIPLE BOND - STRUCTURE AND BONDING IN BIS(ETA-2-ETHYLENE)HEXAKIS(NEOPENTOXY)DITUNGSTEN
    CAYTON, RH
    CHACON, ST
    CHISHOLM, MH
    HUFFMAN, JC
    [J]. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION IN ENGLISH, 1990, 29 (09): : 1026 - 1028