Complex sentence: Independent confirmatory work is obviously needed... and at the present time white graphite appears to be the carbon analog of polywater--in other words unlikely, even fantastic claims were made that were not supported by the available data.
Split into simpler sentences: Independent confirmatory work is obviously needed... and at the present time white graphite appears to be the carbon analog of polywater. In other words, unlikely--even fantastic--claims were made that were not supported by the available data.