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首页> 外文期刊>Chemistry: A European journal >Experimental and theoretical evidence of the existence of gold(I)...mercury(II) interactions in solution through fluorescence-quenching measurements
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Experimental and theoretical evidence of the existence of gold(I)...mercury(II) interactions in solution through fluorescence-quenching measurements

机译：通过荧光猝灭法测定溶液中金（I）...汞（II）相互作用的实验和理论证据

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Heteronuclear complexes {[Hg(R)_2][Au(R′)(PMe _3)]_2}_n (R=R′=C_6Cl _2F_3 (3); R=R′=C_6F_5 (4); R=C_6Cl_2F_3, R′=C_6F_5 (5); R=C_6F_5, R′=C_6Cl_2F 3 (6)) were prepared by the treatment of the corresponding organomercury compounds, [Hg(C_6X_5)_2], with two equivalents of [Au(C_6X_5)(PMe_3)]. Their crystal structures, as determined by using X-ray diffraction methods, display Au...Hg interactions. Although only compound 4 and 5 show luminescence in the solid state, all of these compounds quench the fluorescence of naphthalene in solution. Solution studies of these derivatives suggest a cooperative effect of the gold(I) center in switching on the quenching capabilities of the [Hg(C _6X_5)_2] synthon with naphthalene. Theoretical studies confirmed the quenching ability of the organomercury species in the presence of gold. Goldeneye: Complexes of the type{[Hg(R)_2] [Au(R′)(PMe_3)]_2}_n (R and R′=perhalophenyl groups), with metallophilic Au~I...Hg ~(II) interactions, were detected in solution by quenching experiments of arenes, which were reproduced at the theoretical level (see scheme).
机译：异核络合物{[Hg（R）_2] [Au（R'）（PMe _3）] _ 2} _n（R = R'= C_6Cl _2F_3（3）; R = R'= C_6F_5（4）; R = C_6Cl_2F_3， R'= C_6F_5（5）; R = C_6F_5，R'= C_6Cl_2F 3（6））是通过将相应的有机汞化合物[Hg（C_6X_5）_2]与两当量的[Au（C_6X_5）（ PMe_3）]。通过使用X射线衍射法确定的它们的晶体结构显示出Au ... Hg相互作用。尽管只有化合物4和5呈固态发光，但所有这些化合物均能猝灭溶液中萘的荧光。这些衍生物的溶液研究表明，金（I）中心在切换[Hg（C _6X_5）_2]合成子与萘的猝灭能力方面具有协同作用。理论研究证实了金存在下有机汞物种的猝灭能力。黄金眼：{{Hg（R）_2] [Au（R'）（PMe_3）] _ 2} _n型（R和R'=全卤代苯基）的配合物，具有嗜金属的Au〜I ... Hg〜（II）通过芳烃的淬灭实验在溶液中检测到相互作用，并在理论水平上进行了复制（参见方案）。

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