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Reversible Formation of Polymeric Chains by Coordination of Pentaphosphaferrocene with Silver(I) Cations

Scheer, Manfred ; Gregoriades, Laurence John ; Virovets, Alexander V. ; Kunz, Werner ; Neueder, Roland ; Krossing, Ingo
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Date of publication of this fulltext: 07 Jun 2010 12:56


A fragile coordination polymer: The pentaphosphaferrocene [Cp*Fe(5-P5)] reacts with the AgI salt of the weakly coordinating anion [Al{OC(CF3)3}4]- to yield a polymer comprising cyclo-P5 moieties in an unprecedented 1,2,3-coordination mode (see figure). Analytical data and DFT calculations support the existence of a monomer/dimer/oligomer equilibrium in solution, which is entirely in favor of the monomer at room temperature and shifts to the dimer/oligomer at reduced temperatures.

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