Xq. Wang et al., Polymeric diaquatetra-mu-thiocyanato-manganese(II)mercury(II) bis(N,N-dimethylacetamide) solvate, ACT CRYST C, 56, 2000, pp. 1305-1307
In the title complex, {[MnHg(SCN)(4)(H2O)(2)]. 2C(4)H(9)NO}(n), each Mn ato
m is octahedrally coordinated to four equatorial thiocyanate N atoms and tw
o axial water O atoms. The Mn atom and two O atoms lie on a twofold axis. T
wo kinds of crystallographically independent Hg atoms (denoted Hg1 and Hg2)
are tetrahedrally coordinated with four thiocyanate S atoms and each Hg at
om lies on a (4) over bar axis. N,N-Dimethylacetamide molecules are connect
ed to coordinated water molecules through hydrogen bonds. Each pair of Mn a
nd Hg atoms is bridged via one thiocyanate ion. An Mn(2)Hg1Hg2(SCN)(4) 16-m
embered ring is formed as a unit and the four metal atoms are in a chair-fo
rm tetrahedral arrangement. The units are linked with one another and form
infinite two-dimensional networks.