【摘 要】
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Concerted experimental and theoretical investigations have confirmed that boronyl group(BO),which is isovalent to CN and CO,is a monovalent σradial with a
【机 构】
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Institute of Molecular Science,Shanxi University,Taiyuan 030006,China
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Concerted experimental and theoretical investigations have confirmed that boronyl group(BO),which is isovalent to CN and CO,is a monovalent σradial with a robust B≡O triple bond.On the basis of BO/Au/H isolonal analogy,we have successfully produced and characterized various gas-phase clusters with μn-BO groups(n=1,2,3),including terminal μ1-BO in linear B(BO)2-/0 and B2(BO)22-/-/0,triangular B(BO)3-/0,tetrahedral B(BO)4-,planar B3(BO)n-(n=1,2),B4(BO)n-(n=1-3),B10(BO)-and B12(BO)-,double-chain nanoribbon Bn(BO)2-/0 with πplus σdouble conjugation,and metal boronyl clusters Aun(BO)-and Aun(BO)(n=1-3)1,bridging μ2-BO in planar B2(BO)3-and B3(BO)3-,and face-capping μ3-BO in octahedral B6(BO)7-2,resepectively.Interestingly,the perfectly planar borony boroxine D3h B3O3(BO)3 with three μ1-BO terminals appears to be a new member of the "inorganic benzene" family,while the newly reported B3On-/0/+ clusters(n=2-4)3 possess novel 3c-2e ω-bonds and rhombic 4c-2e o-bonds.Similar to BO,BS group can also serve as effective terminal4 and bridging groups.In short,parallel to CN,the μn-BO and μn-BS(n=1,2,3)groups enrich the chemistry of boron and open the area of boronyl chemistry.
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