The carbene complex I shown below undergoes the following reactions. Propose structural formulas for the reaction products.a. When a toluene solution containing I and excess triphenylphosphine is heated to reflux, compound II is formed first, and then compound III. II has infrared bands at 2038,1958, and 1906cm−1 and III at 1944 and 1860cm−1.1H NMR data δ values (relative area) are as follows:II: 7.62,7.41 multiplets (15)4.19 multiplet (4) III: 7.70,7.32 multiplets (15) 3.39 singlet (2)b. When a solution of I in toluene is heated to reflux with 1,1 -bis(diphenylphosphino)methane, a colorless product IV is formed that has the following properties:IR: 2036,1959,1914cm−1Elemental analysis (accurate to ±0.3% ): 35.87%C 2.73% ?c. I reacts rapidly with the dimethyldithiocarbamate ion S2CN(CH3)2− in solution to form Re(CO)5Br+Va product that does not contain a metal atom. This product has no infrared bands between 1700 and 2300cm−1. However, it does show moderately intense bands at 1500 and 977cm−1. The 1HNMR spectrum of V shows bands at δ3.91 (triplet), 3.60 (triplet), 3.57 (singlet), and 3.41 (singlet). (See G. L. Miessler, S. Kim, R. A. Jacobson,R. J. Angelici, Inorg. Chem., 1987,26,1690.

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The carbene complex I shown below undergoes the following reactions. Propose structural formulas for the reaction products.a. When a toluene solution containing I and excess triphenylphosphine is heated to reflux, compound II is formed first, and then compound III. II has infrared bands at 2038,1958, and 1906cm−1 and III at 1944 and 1860cm−1.1H NMR data δ values (relative area) are as follows:II: 7.62,7.41 multiplets (15)4.19 multiplet (4) III: 7.70,7.32 multiplets (15) 3.39 singlet (2)b. When a solution of I in toluene is heated to reflux with 1,1 -bis(diphenylphosphino)methane, a colorless product IV is formed that has the following properties:IR: 2036,1959,1914cm−1Elemental analysis (accurate to ±0.3% ): 35.87%C 2.73% ?c. I reacts rapidly with the dimethyldithiocarbamate ion S2​CN(CH3​)2−​ in solution to form Re(CO)5​Br+Va product that does not contain a metal atom. This product has no infrared bands between 1700 and 2300cm−1. However, it does show moderately intense bands at 1500 and 977cm−1. The 1HNMR spectrum of V shows bands at δ3.91 (triplet), 3.60 (triplet), 3.57 (singlet), and 3.41 (singlet). (See G. L. Miessler, S. Kim, R. A. Jacobson,R. J. Angelici, Inorg. Chem., 1987,26,1690.

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Question Text	The carbene complex I shown below undergoes the following reactions. Propose structural formulas for the reaction products.a. When a toluene solution containing I and excess triphenylphosphine is heated to reflux, compound II is formed first, and then compound III. II has infrared bands at $2038, 1958,$ and $1906 cm^{- 1}$ and $III$ at 1944 and $1860 cm^{- 1} .^{1} H$ NMR data $δ$ values (relative area) are as follows:II: $7.62, 7.41$ multiplets (15)4.19 multiplet (4) III: 7.70,7.32 multiplets (15) 3.39 singlet (2)b. When a solution of I in toluene is heated to reflux with 1,1 -bis(diphenylphosphino)methane, a colorless product IV is formed that has the following properties:IR: $2036, 1959, 1914 cm^{- 1}$ Elemental analysis (accurate to $\pm 0.3%$ ): $35.87% C$ $2.73%$ ?c. I reacts rapidly with the dimethyldithiocarbamate ion $S_{2} CN (CH_{3})_{2}^{-}$ in solution to form $Re (CO)_{5} Br + V$ a product that does not contain a metal atom. This product has no infrared bands between 1700 and $2300 cm^{- 1}$ . However, it does show moderately intense bands at 1500 and $977 cm^{- 1}$ . The $^{1} H NMR$ spectrum of $V$ shows bands at $δ 3.91$ (triplet), 3.60 (triplet), 3.57 (singlet), and 3.41 (singlet). (See G. L. Miessler, S. Kim, R. A. Jacobson,R. J. Angelici, Inorg. Chem., $1987, 26, 1690.$
Topic	All topics
Subject	Chemistry
Class	Class 12

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