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首页> 外文期刊>Polyhedron: The International Journal for Inorganic and Organometallic Chemistry >ALKYL ADDITION AND DEPROTONATION OF NI(TMTAA) DERIVATIVES AND CRYSTAL STRUCTURE OF [NI((ET)TMTAA)][BF4]
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ALKYL ADDITION AND DEPROTONATION OF NI(TMTAA) DERIVATIVES AND CRYSTAL STRUCTURE OF [NI((ET)TMTAA)][BF4]

机译:Ni(TMTAA)衍生物的烷基加和质子化与[NI((ET)TMTAA)] [BF4]的晶体结构

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摘要

The reaction of Ni(tmtaa) {(6,8,15,17-tetramethyl-7H,16H-5,9,14,18-tetraaza-dibenzo[b,i]- cyclo-tetradecenato(2-)-k(4)-N,N',N '',N''') nickel(II)} with an alkylating agent, R3OBF4, yields [Ni{(R)tmtaa}][BF4] (R = Et (1) or Me (2)). A monosubstituted product, Ni(R-tmtaa-H) (R = Et (3) or Me (4)), is then obtained followed by the deprotonation of [Ni{(R)tmtaa}][BF4]. The crystal structure of [Ni{(Et)tmtaa}][BF4] reveals a novel structure with one diiminate unit coordinated to nickel on one side and one diimine unit on the other side. In the NiN4 co-ordination there is a small difference in Ni--N bond lengths according to N type. The absorption bands of 2 and 4 appearing around 600 nm due to metal-to-ligand charge transfer are red shifted from 585 nm (epsilon similar to 7.5 x 10(3)) for Ni(tmtaa) to 606 nm (epsilon similar to 8.0 x 10(3)) for 3. (C) 1997 Elsevier Science Ltd. [References: 29]
机译:Ni(tmtaa){(6,8,15,17-四甲基-7H,16H-5,9,14,18-四氮杂-二苯并[b,i]-环十四碳烯(2-)-k( 4)-N,N',N'',N''')具有烷基化剂R3OBF4的镍(II)}产生[Ni {(R)tmtaa}] [BF4](R = Et(1)或我(2))。然后获得单取代的产物Ni(R-tmtaa-H)(R = Et(3)或Me(4)),然后使[Ni {(R)tmtaa}] [BF4]去质子化。 [Ni {(Et)tmtaa}] [BF4]的晶体结构揭示了一种新颖的结构,其中一个二价单元在一侧与镍配位,另一个在一个二亚胺单元上。在NiN4配位中,根据N型的Ni-N键长存在微小差异。由于金属到配体的电荷转移,出现在600 nm附近的2和4的吸收带从Ni(tmtaa)的585 nm(ε类似于7.5 x 10(3))红移到606 nm(ε类似于8.0) x 10(3))for3。(C)1997 Elsevier Science Ltd. [参考:29]

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