165750-98-1

Basic information

• Product Name: (C₁₄H₇O₂C(O)NHC₂H₄C₅H₄)Mo(CO)2(((C₆H₅)2PCH₂)2)⁽¹⁺⁾
• CAS NO: 165750-98-1
• Molecular Weight: 892.759
• Mol File: 165750-98-1.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: (C₁₄H₇O₂C(O)NHC₂H₄C₅H₄)Mo(CO)2(((C₆H₅)2PCH₂)2)⁽¹⁺⁾(CAS DataBase Reference)
• NIST Chemistry Reference: (C₁₄H₇O₂C(O)NHC₂H₄C₅H₄)Mo(CO)2(((C₆H₅)2PCH₂)2)⁽¹⁺⁾(165750-98-1)
• EPA Substance Registry System: (C₁₄H₇O₂C(O)NHC₂H₄C₅H₄)Mo(CO)2(((C₆H₅)2PCH₂)2)⁽¹⁺⁾(165750-98-1)

Safety Data

• Hazardous Substances Data: 165750-98-1(Hazardous Substances Data)

Upstream product

• 165750-91-4 [(CO)3Mo(C₅H₄C₂H₄NHC(O)C₁₄H₇O₂)]2 
• 1663-45-2 1,2-bis-(diphenylphosphino)ethane 

Relevant articles and documents

Synthesis and photochemistry of the supramolecular (CpA)2Mo2(CO)6 complex (CpA = η5-C5H4CH2CH 2NHC(O)-C14H7O2; C14H7O2 = 2-anthraquinonyl). Reactivity of 19-electron complexes covalently bound to an electron acceptor

The synthesis and photochemistry of the anthraquinone-derivatized (CpA)2Mo2(CO)6 molecule are described (CpA = η5-C5H4CH2CH 2NHC(O)-C14H7O2; C14H7O2 = 2-anthraquinonyl). The purpose of the attached anthraquinone is to act as an internal electron acceptor for 19-electron adducts generated from Cp2Mo2(CO)6. Such species may be useful in schemes for recycling the 19-electron adducts. Irradiation of the complex with low-energy light (λ > 525 nm) results in homolysis of the Mo-Mo bond. The resulting radicals can be trapped with CCl4 or TMIO (TMIO is the nitroxide radical trap 1,1,3,3-tetramethylisoindoline-2-oxyl) or they can react with phosphine ligands to give net disproportionation reactions. The occurrence of disproportionation strongly suggests that the radicals react with phosphines to form 19-electron adducts. Although exogenous anthraquinone will inhibit disproportionation of the unsubstituted Cp2Mo2(CO)6 dimer, disproportionation of (CpA)2-Mo2(CO)6 occurs because (CpA-)(CpA)Mo2(CO)6, a key intermediate in the reaction, is photochemically fragmented to form (CpA)Mo(CO)3- and CpAMo(CO)3. This reaction was demonstrated by independently generating (CpA-)(CpA)Mo2(CO)6 and showing that it quickly fragmented when irradiated with visible light (λ > 525 nm). A scheme is proposed and tested for recycling 19-electron complexes generated photochemically from (CpA)2Mo2(CO)6; however, the scheme did not work. The net reaction in the proposed recycling scheme is thermodynamically uphill; a facile photochemical back-reaction pathway is one likely reason no net reaction is observed.