Oxidative addition of I2, MeI, and CH2I2to the naphthalene-1,8-diamide bridged complex [Ir2{µ-1,8-(NH)2C10H6}(CO)2(PPh3)2]. X-Ray crystal structure of [Ir2I2(µ-CH2){µ-1,8-(NH)2C10H6}(CO)2(PPh3)2]·CH2Cl2
- 1 January 1990
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 8,p. 2587-2591
- https://doi.org/10.1039/dt9900002587
Abstract
Reaction of [Ir2{µ-1,8-(NH)2C10H6}(CO)2(PPh3)2](1) with I2, MeI, or CH2I2 at room temperature yields the dinuclear iridium(II) complexes [Ir2I2{µ-1,8-(NH)2C10H6}(CO)2(PPh3)2](2), [Ir2Me(I){µ-1,8-(NH)2C10H6}(CO)2(PPh3)2](3), and [Ir2(CH2I)I{µ-1,8-(NH)2C10H6}(CO)2(PPh3)2](4) respectively. Complex (4) undergoes thermal oxidative isomerization to the methylene-bridged complex [Ir2I2(µ-CH2){µ-1,8-(NH)2C10H6}(CO)2(PPh3)2](5). The molecular structure of (5) has been determined by an X-ray analysis. Crystals of (5) are monoclinic, space group P21/c, with a= 16.253(2), b= 12.214(1), c= 24.919(3)Å, β= 98.44(1)° and, Z= 4. The complex is dinuclear. The two distorted octahedral environments of the metal centres share an ideal common face formed by the three donor atoms of the bridging ligands. The co-ordination spheres are analogous, the geometric arrangement of the CO and PPh3 ligands conferring a cis configuration to the molecule. The intermetallic Ir ⋯ Ir separation is 3.0306(4)Å.Keywords
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