[Atomic-S (OP)]

  O   O   O   O   O   O   O   O   O   O   O   O   O   O
 / \ / \ / \ / \ / \ / \ / \ / \ / \ / \ / \ / \ / \ / \
C   C   C   C   C   C   C   C   C   C   C   C   C   C   C  . . . . . .
 \ / \ / \ / \ / \ / \ / \ / \ / \ / \ / \ / \ / \ / \ /
  O   O   O   O   O   O   O   O   O   O   O   O   O   O   

and if so, what are its properties?   

[lightarrow]

Maybe it's CO₂-V, the polymer of CO₂, created over 33 GPa and 1700 K:

https://www.llnl.gov/str/Yoo.html

(Copy the link on the address bar and push enter).

[CliffordK]

Maybe it's CO₂-V, the polymer of CO₂, created over 33 GPa and 1700 K:

https://www.llnl.gov/str/Yoo.html

Wonderful article:

So far, once CO2-V has been created at high pressures and temperatures, it retains its structure at room temperature but only at pressures above 1 gigapascal. Below that pressure it collapses and is no longer a polymer.

So, at least in the form they've synthesized, it is not a good way to sequester CO₂.  It takes lots of energy to make, and isn't stable at room temp.

[Atomic-S (OP)]

Interesting.