一系列含3原子螯合的4員環bis-cyclometallated Ir(III)化合物被合成與鑑定，將[Ir( 2-C^N)2Cl]2 1和AgNO3反應可以得到化合物 [Ir(2-C^N)2(MeCN)2]NO3 (C^N= 2-phenylpyridine (ppy, S1)、2-p-tolylpyridine (tpy, S2)、和ethyl 4-(pyridin-2-yl)benzoate (epbo, S3))。在三乙基胺存在時以S1和benzoic acid (bz), 2-methylacrylic acid (ma), 1,1,1- trimethylacetic acid (tma), acetic acid (ac) 反應得到[Ir(2-ppy)2(2-X)] (X= bz (1a), ma (1b), tma (1c),和 ac (1d))。以S1、S2、和S3個別和Na(Et2NCS2) 、K(MeOCS2)、 K(EtOCS2)、 K[(CH3)2CHOCS2]等配位基在MeCN中迴流反應，也同樣得到化合物[Ir(2-ppy)2(2-Y)] (Y= Et2NCS2 (1e)、 MeOCS2 (1f)、EtOCS2 (1g)、(Me)2CHOCS2 (1h))；[Ir(2-tpy)2(2-Y)] (Y= Et2NCS2 (2e)、MeOCS2 (2f)、EtOCS2 (2g)、(Me)2CHOCS2 (2h))，和[Ir(2-epbo)2(2-Y)] (Y= Et2NCS2 (3e)、MeOCS2 (3f)、EtOCS2 (3g))。所有的錯合物，均利用元素分析、IR及NMR光譜進行鑑定，其中1a、1b、1c、1g、1h、2g、2h也進一步得到X光繞射數據，並解出構造，此外所有化合物的光物理性質也被研究。

A series of bis-cyclometallated Ir(III) compounds containing 3 atom chelates has been prepared and characterized. Reaction of [Ir(h2-C^N)2Cl]2 1 with AgNO3 produced [Ir(h2-C^N)2(MeCN)2]NO3 (C^N= 2-phenylpyridine ( ppy, S1), 2-p-tolylpyridine ( tpy, S2), ethyl 4-(pyridin-2-yl)benzoate (epbo, S3)). Further reaction of S1 with benzoic acid(bz), 2-methylacrylic acid (ma), 1,1,1-trimethylacetic Acid (tma), acetic acid (ac) in the presence of excess Et3N yieled [Ir(h2-ppy)2(h2-X)] (X= bz(1a), ma (1b), tma (1c), ac (1d)). Reaction of (S1), tpy (S2), epbo(S3) with Na(Et2NCS2) , K(MeOCS2), K(EtOCS2), and K[(CH3)2CHOCS2] produced likewise [Ir(h2-ppy)2(h2-Y)] (Y= Et2NCS2 (1e), MeOCS2 (1f), EtOCS2 (1g), (Me)2CHOCS2 (1h)) , and [Ir(h2-tpy)2(h2-Y)] (Y= Et2NCS2 (2e), MeOCS2 (2f), EtOCS2 (2g), (Me)2CHOCS2 (2h)) , and [Ir(h2-epbo)2(h2-Y)] (Y= Et2NCS2 (3e), MeOCS2 (3f), EtOCS2 (3g)). All compounds have been characterized by EA, IR, and NMR spectroscopy. Compounds 1a, 1b, 1c, 1g, 1h, 2g, and 2h have been further collecting the respective X-ray diffraction data and solved for the solid state structure. The photophysical properties of all new complexes were also studued.

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