User:Rjlove46/Molecular wire
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[edit]Inorganic molecular wires
[edit]There are a few different classes of inorganic molecular wires. Some, for example, consist of subunits related to Chevrel clusters. The synthesis of Mo6S9−xIx was performed in sealed and vacuumed quartz ampoule at 1343 K. In Mo6S9−xIx, the repeat units are Mo6S9−xIx clusters, which are joined together by flexible sulfur or iodine bridges.[1] Chevrel-phase Co6Se8L'6 (L' = Ph2PN(H)R, Ph = phenyl, R = 4-tolyl; R = isopropyl) clusters have also been assembled into molecular wires by metalating edge-sites with zinc. The exposed zinc sites bind to ditopic organic linkers (4,4'-bipyridine and tetrapyrido[3,2-a:2′,3′-c:3″,2″-h:2‴,3‴-j] phenazine) and form nanowire structures.[2]
In other examples, research has demonstrated that molecular wires can be comprised of metal ions that are bridged by halogens, denoted as "MII/MIV mixed-valence complexes" [M(L)2][M'X2(L)2]Y4 (M, M' = Pt, Pd, Ni; X = Cl, Br, I; L = neutral ligand; Y = counter ion), such as [Pt(en)2][PtCl2(en)2].[3]
Chains can also be produced from metallo-organic precursors.[4] For example, X{Fe}C4{Fe}X (X = I, NCMe, and N2; {Fe} = Fe[1,2-bis(diethylphosphino)-ethane)2]; C4 = alternating C single and triple bonds), these are used to form homometallic linkers that attach to Au electrons for electron transport.[5]
References
- ^ Mihailovic, D. (2009). "Inorganic molecular wires: Physical and functional properties of transition metal chalco-halide polymers". Progress in Materials Science. 54 (3): 309–350. doi:10.1016/j.pmatsci.2008.09.001.
- ^ Mitchell, Benjamin S.; Krajewski, Sebastian M.; Kephart, Jonathan A.; Rogers, Dylan; Kaminsky, Werner; Velian, Alexandra (2022-01-24). "Redox-Switchable Allosteric Effects in Molecular Clusters". JACS Au. 2 (1): 92–96. doi:10.1021/jacsau.1c00491. PMC 8790731. PMID 35098225.
{{cite journal}}: CS1 maint: PMC format (link) - ^ Kimizuka, N. (2000). "Towards Self-Assembling Inorganic Molecular Wires". Advanced Materials. 12 (19): 1461–1463. doi:10.1002/1521-4095(200010)12:19<1461::AID-ADMA1461>3.0.CO;2-X. ISSN 1521-4095.
- ^ F. Albert Cotton, Carlos A. Murillo and Richard A. Walton (eds.), Multiple Bonds Between Metal Atoms, 3rd edition, Springer (2005).
- ^ Lissel, Franziska; Schwarz, Florian; Blacque, Olivier; Riel, Heike; Lörtscher, Emanuel; Venkatesan, Koushik; Berke, Heinz (2014-10-02). "Organometallic Single-Molecule Electronics: Tuning Electron Transport through X(diphosphine)2FeC4Fe(diphosphine)2X Building Blocks by Varying the Fe–X–Au Anchoring Scheme from Coordinative to Covalent". Journal of the American Chemical Society. 136 (41): 14560–14569. doi:10.1021/ja507672g. ISSN 0002-7863.