Polyphosphate Polynucleotides Speculative Structures

Chains of type (10.93b) should be very unstable because of the presence of triply linked PO4 tetrahedra and any cross links between double helices as in Equation 10.93c would seem to be ruled out for the same reason. 

Crosslinked double helices of DNA via other tetrahedral groups, for example, AIO4 might, on the other hand, be more stable unless ruled out for steric reasons (10.93d). Long DNA chains might be more successfully anchored to AIPO4 than has so far proved to be the case with isostructural Si02. 

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