The reaction of two equivalents of [Pt(PEt₃)₄] with 4,6-dibromodibenzothiophene (DBT-Br₂) afforded trans,trans-[(μ-DBT-1κC⁴:2κC⁶){PtBr(PEt₃)₂}₂] (5), a unique example of double oxidative addition of a heteroaromatic substrate to Pt(0). The related bimetallic Pt(II) complex, cis,cis-[(μ-DBT-1κC⁴:2κC⁶){Pt(η⁴-cod)Cl}₂] (6), was isolated via a double transmetallation of 4,6-bis(trimethylstannyl)dibenzothiophene with [Pt(η⁴-cod)Cl₂], where cod is 1,5-cyclooctadiene. The new complexes were characterised by spectroscopic techniques. The disubstituted dibenzothiophene compounds were prepared by dilithiation of dibenzothiophene, followed by quenching with chlorotrimethylsilane and chlorotrimethylstannane, to give 4,6-(SiMe₃)₂(SC₁₂H₆) (2) and 4,6-(SnMe₃)₂(SC₁₂H₆) (4), respectively. Treatment of 4,6-(SiMe₃)₂(SC₁₂H₆) with bromine produced 4,6-Br₂(SC₁₂H₆) (3). The X-ray crystal structures of 2 and 3 were determined. An improved method of synthesis of 2,8-dibromodibenzothiophene (1) was also developed.

中文翻译：

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4,6-二取代的二苯并噻吩的合成，结构及其在双核铂（II）配合物中的应用

[Pt（PEt ₃）₄ ]的两个当量与4,6-二溴二苯并噻吩（DBT -溴₂）得到的反式，反式- [（μ-DBT-1κ Ç ⁴：2κ Ç ⁶）{PTBR（PET ₃）₂ } ₂ ]（5），双氧化加成杂芳基中的一个独特的例子至Pt（0）。相关双金属的Pt（II）络合物，顺，顺- [（μ-DBT-1κ Ç ⁴：2κ Ç ⁶）{的Pt（η ⁴ -cod）氯} ₂ ]（6），分离通过的双金属转移4,6-双（三甲基锡烷基）二苯并噻吩与[PT（η ⁴ -cod）氯₂ ]，其中，鳕鱼是1,5-环辛二烯。新配合物的特征在于光谱技术。二取代二苯并噻吩 化合物是通过对 二苯并噻吩，然后用淬灭 氯三甲基硅烷和氯三甲基锡烷，分别得到4，6-（SiMe ₃）₂（SC ₁₂ H ₆）（2）和4，6-（SnMe ₃）₂（SC ₁₂ H ₆）（4）。用溴处理4,6-（SiMe ₃）₂（SC ₁₂ H ₆）产生4,6-Br ₂（SC ₁₂ H ₆）（3）。确定了2和3的X射线晶体结构。一种改进的合成方法2,8-二溴二苯并噻吩（1）也得到了发展。