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Dinuclear (N∧C∧N) Pincer Pt(II) Complexes with Bridged Organometallic Linkers: Synthesis, Structures, Self-Aggregation, and Photophysical Properties
Organometallics ( IF 2.5 ) Pub Date : 2017-12-06 00:00:00 , DOI: 10.1021/acs.organomet.7b00680 Hugo Sesolis 1 , Carmen Ka-Man Chan 2 , Geoffrey Gontard 1 , Heidi Li-Ki Fu 2 , Vivian Wing-Wah Yam 2 , Hani Amouri 1
Organometallics ( IF 2.5 ) Pub Date : 2017-12-06 00:00:00 , DOI: 10.1021/acs.organomet.7b00680 Hugo Sesolis 1 , Carmen Ka-Man Chan 2 , Geoffrey Gontard 1 , Heidi Li-Ki Fu 2 , Vivian Wing-Wah Yam 2 , Hani Amouri 1
Affiliation
A new family of cationic dinuclear cyclometalated Pt(II) complexes containing an organometallic assembling ligand has been reported. The general formulas for these compounds is as follow: [R-(N∧C∧N)Pt—L-L—Pt(N∧C∧N)-R][X]2, where L-L = [Cp*Ir-p-(η4-C6H4S2)], R = H, X = OTf (5); R= CF3–, X = OTf (6a), SbF6 (6b); L-L = [Cp*Ir-p-(η4-C6H4Se2)] R= CF3–, X = OTf (7a), SbF6 (7b). In these coordination assemblies two cyclometalated R-(N∧C∧N)Pt moieties are held by either η4-dithio-p-benzoquinone complex [Cp*Ir-p-(η4-C6H4S2)] (3) or η4-diseleno-p-benzoquinone complex [Cp*Ir-p-(η4-C6H4Se2)] (4). The molecular structures of the known complex [4-CF3-(N∧C∧N)PtCl] as well as two compounds of the above family [(N∧C∧N)Pt–Cp*Ir-p-(η4-C6H4S2)—Pt(N∧C∧N)][CF3SO3]2 (5) and [CF3-(N∧C∧N)Pt—Cp*Ir-p-(η4-C6H4S2)—Pt(N∧C∧N)-CF3][CF3SO3]2 (6a) were ascertained by single crystal X-ray diffraction study and confirmed the formation of the target molecules. The solid-state packing of 5 and 6a confirms the presence π–π and short Pt···Pt interactions among individual units providing 1D supramolecular chains. To our knowledge, these are the only known examples where two cyclometalated Pt(N∧C∧N) units are assembled by a bridging ligand (vide infra). All compounds show phosphorescence in the bluish-green region (486–521 nm) in the solution at room temperature and exhibit higher luminescence quantum yields relative to the analogous compounds containing a Pt(terpy) chromophore in thin film.
中文翻译:
双核(N ∧ Ç ∧ N)钳合铂(II)配合物的有机金属桥接连接体:合成,结构,自聚集,和光物理性质
已经报道了含有有机金属组装配体的阳离子双核环金属化的Pt(II)络合物的新家族。这些化合物的通式是如下:[R-(N ∧ Ç ∧ N)的Pt-LL-的Pt(N ∧ Ç ∧ N)-R] [X] 2,其中,LL =的[Cp * IR- p - (η 4 -C 6 H ^ 4 š 2)],R = H,X =光学传递函数(5); R = CF 3 –,X = OTf(6a),SbF 6(6b);LL =的[Cp * IR- p - (η 4 -C 6 H ^ 4硒2)] R = CF 3 –,X = OTf(7a),SbF 6(7b)。在这些协调组件2环金属R-(N ∧ Ç ∧ N)的Pt部分通过任一η保持4 -dithio- p苯醌复合物的[Cp * IR- p - (η 4 -C 6 H ^ 4小号2)](3)或η 4 -diseleno- p苯醌复合物的[Cp * IR- p - (η 4 -C 6 H ^ 4硒2)](4)。已知的复合物[4-CF的分子结构3 - (N ∧ ç ∧以及两个以上家庭的化合物[(N N)氯铂酸] ∧ Ç ∧ N)的Pt-的Cp * IR- p - (η 4 -C 6 ħ 4小号2)-Pt(N ∧ ç ∧ N)] [CF 3 SO 3 ] 2(5)和[CF 3 - (N ∧ ç ∧ N)的Pt-的Cp * IR- p - (η 4 -C 6 H 4 S 2)—铂(N∧ Ç ∧ N)-CF 3 ] [CF 3 SO 3 ] 2(图6a)通过单晶X射线衍射研究确定,并且确认了目标分子的形成。5和6a的固态堆积证实了提供一维超分子链的单个单元之间存在π-π和短Pt···Pt相互作用。据我们所知,这是已知的唯一的例子,其中两个环金属铂(N ∧ Ç ∧N)个单元通过桥联配体组装(见下文)。相对于薄膜中包含Pt(terpy)发色团的类似化合物,所有化合物在室温下在溶液的蓝绿色区域(486-521 nm)中均显示磷光,并且显示出更高的发光量子产率。
更新日期:2017-12-06
中文翻译:
双核(N ∧ Ç ∧ N)钳合铂(II)配合物的有机金属桥接连接体:合成,结构,自聚集,和光物理性质
已经报道了含有有机金属组装配体的阳离子双核环金属化的Pt(II)络合物的新家族。这些化合物的通式是如下:[R-(N ∧ Ç ∧ N)的Pt-LL-的Pt(N ∧ Ç ∧ N)-R] [X] 2,其中,LL =的[Cp * IR- p - (η 4 -C 6 H ^ 4 š 2)],R = H,X =光学传递函数(5); R = CF 3 –,X = OTf(6a),SbF 6(6b);LL =的[Cp * IR- p - (η 4 -C 6 H ^ 4硒2)] R = CF 3 –,X = OTf(7a),SbF 6(7b)。在这些协调组件2环金属R-(N ∧ Ç ∧ N)的Pt部分通过任一η保持4 -dithio- p苯醌复合物的[Cp * IR- p - (η 4 -C 6 H ^ 4小号2)](3)或η 4 -diseleno- p苯醌复合物的[Cp * IR- p - (η 4 -C 6 H ^ 4硒2)](4)。已知的复合物[4-CF的分子结构3 - (N ∧ ç ∧以及两个以上家庭的化合物[(N N)氯铂酸] ∧ Ç ∧ N)的Pt-的Cp * IR- p - (η 4 -C 6 ħ 4小号2)-Pt(N ∧ ç ∧ N)] [CF 3 SO 3 ] 2(5)和[CF 3 - (N ∧ ç ∧ N)的Pt-的Cp * IR- p - (η 4 -C 6 H 4 S 2)—铂(N∧ Ç ∧ N)-CF 3 ] [CF 3 SO 3 ] 2(图6a)通过单晶X射线衍射研究确定,并且确认了目标分子的形成。5和6a的固态堆积证实了提供一维超分子链的单个单元之间存在π-π和短Pt···Pt相互作用。据我们所知,这是已知的唯一的例子,其中两个环金属铂(N ∧ Ç ∧N)个单元通过桥联配体组装(见下文)。相对于薄膜中包含Pt(terpy)发色团的类似化合物,所有化合物在室温下在溶液的蓝绿色区域(486-521 nm)中均显示磷光,并且显示出更高的发光量子产率。