Synthesis, crystal structure and luminescent properties of one coordination polymer of cadmium(II) with mixed thiocyanate and hexamethylenetetramine ligands.

A novel Cd(II) coordination polymer [Cd(SCN)(2)(hmt)(1/2)(H(2)O)](2).H(2)O (hmt=hexamethylenetetramine) has been synthesized and characterized by IR, elemental analysis, TG technique and X-ray crystallography. Cd(II) atom has an distorted octahedral environment with an N(3)S(2)O donor set. Every six Cd(II) centers are linked by hmt and thiocyanato bridges to form a planar 2D coordination polymer containing hexagonal metallocyclic rings [Cd(6)(SCN)(8)(hmt)(2)]. A 2D layer structure is held together with its neighboring ones via a set of hydrogen-bonding interactions to form a 3D supramolecular structure. The luminescent properties of the title complex in the solid state were investigated.

Aqua-(hexa-methyl-enetetra-mine-κN)bis-(methanol-κO)bis-(thio-cyanato-κN)cobalt(II).

In the title complex, [Co(NCS)(2)(C(6)H(12)N(4))(CH(4)O)(2)(H(2)O)], the six-coordinated Co atom has a slightly distorted octa-hedral geometry. The molecules are linked by intermolecular O-H⋯S and O-H⋯N hydrogen bonds, forming a three- dimensional crystal structure. Intramolecular C-H⋯N and C-H⋯O hydrogen bonds are also present.