[navalava]

The parent hydrides represented by the formula H3SiSiH2SiH3 and HSSSSH are named?

I only know about silanes and sulfanes. If it was carbon in the place of silicon, it would be propane, but I don't know what to do when it's silicon or sulfur. Please *delete me*

[fledarmus]

Those appear to be trisilane and 1,3-tetrasiladiyne. For all silicon analogs of carbon compounds, it appears that the convention is to use a prefix+sil to indicate the chain length, and otherwise use normal organic nomenclature to show the bonding. Thus, disilane, trisilane, tetrasilane, tetrasiladiene, etc.

[DrCMS]

Those appear to be trisilane and 1,3-tetrasiladiyne. For all silicon analogs of carbon compounds, it appears that the convention is to use a prefix+sil to indicate the chain length, and otherwise use normal organic nomenclature to show the bonding. Thus, disilane, trisilane, tetrasilane, tetrasiladiene, etc.

All well and good but the second compound listed does not contain Si at all so can not be tetrasilane.
Also you have named it to contain 2 SiSi triple bonds which just do not form without very bulky groups attached to stabilise them.

[fledarmus]

Oops, sorry, reading too fast - didn't realize the second compound was sulfur instead of silicon.

As for the triple-bonded structure, that was a Chem Abstracts structure, 252889-53-5. There were two references listed, but I just assumed the structure was good and didn't check the references.

[navalava]

So would the second structure be tetrasulfane?

[discodermolide]

So would the second structure be tetrasulfane?

Yes the second structure is tertasulfane.

[DrCMS]

Oops, sorry, reading too fast - didn't realize the second compound was sulfur instead of silicon.

As for the triple-bonded structure, that was a Chem Abstracts structure, 252889-53-5. There were two references listed, but I just assumed the structure was good and didn't check the references.

It's hard enough to make materials with SiSi double bonds never mind SiSi triple bonds, that was only reported for the first time in 2004.  There are now a few compound that have SiSi triple bonds but they can be counted on your fingers probably using just the one hand.  Silicon might be the closest element to carbon but it does not form multiple bonds anywhere near as easily (neither do the other elements down that group).  For most purposes its easier to assume Si will only form single bonds with another element.  There are examples of double and triple bonds but in general they have had a lot of work put in to stabilse them with bulky groups alround.