| http://www.w3.org/ns/prov#value | - The anion component, Ad???, may include an anion having the formula [Mk+Qn]d??? wherein k is an integer from 1 to 3; n is an integer from 2-6; n???k=d; M is an element selected from Group 13 of the Periodic Table of the Elements, particularly boron or aluminum, and Q is independently a hydride, bridged or unbridged dialkylamido, halide, alkoxide, aryloxide, hydrocarbyl, substituted hydrocarbyl, ha
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