Reaction of small molecules O2, NO,CO, and the Naldini salt (PPh3)2MnBr2: Characterized by infrared spectroscopy,elemental analysis,and single-crystal X-ray diffraction |
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| Authors: | Bo-Wei Huang Minh-Trung Nguyen Chung-Hung Hsieh |
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| Affiliation: | 1. Department of Chemistry, Tamkang University, New Taipei City, Taiwan;2. Department of Chemistry, Tamkang University, New Taipei City, Taiwan Department of Biology, Faculty of Natural Science and Technology, Tay Nguyen University, Buon Ma Thuot City, Vietnam |
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| Abstract: | Addition of 2 equiv. of PPh3 to MnBr2 in tetrahydrofuran (THF) solution under N2 atmosphere results in the formation of Naldini salt (PPh3)2MnBr2 ( 1 ). Reaction of Complex 1 and O2, NO, and CO (with reducing agent) leads to Complex (OPPh3)2MnBr2 ( 2 ), (PPh3)2Mn(NO)Br2 ( 3 ), and (PPh3)2Mn(CO)3Br ( 4 ), respectively. Both Complexes 2 and 4 crystallize in the triclinic space group P-1 with a = 9.94 Å, b = 10.11 Å, c = 10.53 Å; α = 65.42°, β = 63.16°, and γ = 89.22° of 2 and a = 10.23 Å, b = 12.26 Å, c = 14.44 Å and α = 97.03°, β = 104.34°, and γ = 106.33° of 4 . The isoelectronic replacement of 3CO with 2NO yields the {Mn(NO)2}8 species (PPh3)2Mn(NO)2Br ( 5 ). The single crystal of 5 is in the monoclinic space group C2/c with a = 23.17 Å, b = 9.62 Å, c = 15.92 Å, and β = 114.91°. In the THF solution, Complex 5 serves as an NO source in the presence of NO trapping, Co(TPP), Co(TPP) = 5,10,15,20-tetraphenyl-21H,23H-porphine cobalt(II). |
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| Keywords: | bromide carbon monoxide manganese Naldini salt nitric oxide oxygen triphenyl phosphine |
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