In this chapter papers reporting preparations, formations, or some more important transformations of compounds containing tetracoordinated carbon atoms, bearing one or two halogen atoms (fluorine, chlorine, or bromine) and respectively two or one other functions attached, have shortly been reviewed. The review mainly covers the literature published since 1995 up to 2003, not reported in the first edition of COFGT (1995). Some older references not included in COFGT (1995) are also provided.