Jayrock supports export and importing value types (structs). Below is an example in
an interactive IronPython session where Jayrock is being used to export and import
System.Drawing.Point (struct) to and from JSON:

IronPython 2.0 (2.0.0.0) on .NET 2.0.50727.3053
Type "help", "copyright", "credits" or "license" for more information.
>>> import clr
>>> clr.AddReference('Jayrock.Json')
>>> from Jayrock.Json.Conversion import JsonConvert
>>> clr.AddReference('System.Drawing')
>>> from System.Drawing import Point
>>> print JsonConvert.ExportToString(Point(12,34))
{"x":12,"y":34}
>>> print JsonConvert.Import(Point, '{x:12,y:34}')
{X=12,Y=34}

Jayrock supports export and importing value types (structs). Below is an example in
an interactive IronPython session where Jayrock is being used to export and import
System.Drawing.Point (struct) to and from JSON:

IronPython 2.0 (2.0.0.0) on .NET 2.0.50727.3053
Type "help", "copyright", "credits" or "license" for more information.
>>> import clr
>>> clr.AddReference('Jayrock.Json')
>>> from Jayrock.Json.Conversion import JsonConvert
>>> clr.AddReference('System.Drawing')
>>> from System.Drawing import Point
>>> print JsonConvert.ExportToString(Point(12,34))
{"x":12,"y":34}
>>> print JsonConvert.Import(Point, '{x:12,y:34}')
{X=12,Y=34}

I'm not sure what particular issue you are hoping to address here. It would help if
you could clarify further.

http://code.google.com/p/jayrock/issues/detail?id=13

I have not tried this out yet, but I hope it can convert IronPython types to and from json.

Using json with IronPython via JayRock

json

Python