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In the title complex, {[MnHg(SCN)4(H2O)2]·2C4H9NO}n, each Mn atom is octahedrally coordinated to four equatorial thiocyanate N atoms and two axial water O atoms. The Mn atom and two O atoms lie on a twofold axis. Two kinds of crystallographically independent Hg atoms (denoted Hg1 and Hg2) are tetrahedrally coordinated with four thiocyanate S atoms and each Hg atom lies on a
axis. N,N-Dimethylacetamide molecules are connected to coordinated water molecules through hydrogen bonds. Each pair of Mn and Hg atoms is bridged via one thiocyanate ion. An Mn2Hg1Hg2(SCN)4 16-membered ring is formed as a unit and the four metal atoms are in a chair-form tetrahedral arrangement. The units are linked with one another and form infinite two-dimensional networks.
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The title complex, {[CdHg(SCN)4(C4H9NO)2]2}n, contains two crystallographically independent CdII centres and two HgII centres. Each CdII atom is bound to four N atoms belonging to SCN groups and to two O atoms from N,N-dimethylacetamide (DMA) ligands in an octahedral geometry. Each HgII centre is tetrahedrally coordinated by four SCN S atoms.
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In the title complex, [MnHg(NCS)4(C3H8O2)]n, each Hg atom is tetrahedrally coordinated with four S atoms of the SCN- ions, and each Mn atom is octahedrally coordinated with four N atoms of the SCN- ions, one hydroxyl O atom and one ethereal O atom of the glycol monomethyl ether molecule. Each pair of Hg and Mn atoms is bridged by one SCN- ion. A 24-membered Mn3Hg3(SCN)6 ring is formed as the strucrural unit, with the six metal atoms in a chair-form hexagonal arrangement. The units are condensed and linked three-dimensionally in the crystal resulting in a diamond-like structure.
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The title complex, [MnHg(SCN)4(CH4N2O)3]n, consists of slightly distorted octahedral MnN3O3 and tetrahedral HgS4 units. The MnII atom is coordinated by the O atoms of three urea molecules and by the N atoms of three SCN− ions; HgII is coordinated by four S atoms from SCN− ions. Each pair of MnII and HgII atoms is connected by an –SCN– bridge, forming infinite two-dimensional –Mn—NCS—Hg– networks.
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In the title complex, [MnHg(SCN)4(C2H6SO)2]n, each Hg atom is tetrahedrally coordinated to four S atoms of the SCN ions, while each Mn atom is octahedrally coordinated to four N atoms of the SCN ions and two O atoms of the dimethyl sulfoxide molecules which occupy the trans positions. Each pair of Hg and Mn atoms is bridged by one SCN ion. Two Mn atoms, two Hg atoms and four SCN ions make a 16-membered ring which organises into a two-dimensional network. The dimethyl sulfoxide ligands are extended perpendicular to the plane on both sides.
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The CdII ion in the title complex, [Cd(SCN)2{SC(NH2)2}2]
, is situated at a centre of symmetry, and is bound to two N atoms belonging to thiocyanate groups and to four S atoms of bridging thiourea ligands. The structure consists of infinite chains of slightly distorted edge-shared Cd-centred octahedra. The bridging S atoms of two thiourea ligands comprise the common edge. Some thermal properties are described.
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Zinc mercury tetrathiocyanate consists of slightly flattened ZnN4 and HgS4 tetrahedra linked by -S=C=N- bridges to form infinite three-dimensional -Hg-S=C=N-Zn- networks.
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In the title complex, [Hg(CH4N2S)4][Mn(NCS)4], the Hg and Mn atoms sit at special positions with
symmetry and are tetrahedrally coordinated to four thiourea (TU) S and four thiocyanate (SCN) N atoms, respectively. The structure consists of discrete cationic and anionic [Hg(TU)4]2+ and [Mn(SCN)4]2- complexes, and weak NTU-H
SSCN hydrogen-bond bridges exist between these complexes.
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