Synthesis, and Crystal and Molecular Structure of Bis(N-methyl-formamide)tetrakis(thiocyanato)cobalt(II)mercury(II), CoHg(SCN)4(HCONHCH3)2

• Published in: Bulletin of the Chemical Society of Japan Vol. 59; no. 11; pp. 3495 - 3499
• Main Authors: Kinoshita, Hisashi, Ouchi, Akira
• Format: Journal Article
• Language: English
• Published: Tokyo The Chemical Society of Japan 01.11.1986; Chemical Society of Japan
• Subjects: Condensed matter: structure, mechanical and thermal properties; Exact sciences and technology; Inorganic compounds; Metal complexes; Physics; Structure of solids and liquids; crystallography; Structure of specific crystalline solids; Molecular structure; Transition metal Compounds; Thiocyanato complex; Organic ligand; Experimental study; X ray diffraction; Cobalt II Mercury «II» Complexes; Inorganic compound; Mu complex; Preparation; Heteronuclear complex; Dinuclear complex; Organic amide; Crystalline structure
• ISSN: 0009-2673; 1348-0634
• DOI: 10.1246/bcsj.59.3495

The title complex was synthesized and its crystal and molecular structure were determined by the single-crystal X-ray diffraction technique. The crystal is orthorhombic with a space group P21nb, a=14.953(4), b=15.955(4), c=7.6838(9) Å. The crystal was solvent by means of the heavy-atom method and the final R value was 0.059. The mercury atom is in the tetrahedral geometry, coordinated with four sulfur atoms of the thiocyanate (SCN) ions, and the cobalt atoms is in the octahedral geometry, coordinated with four nitrogen atoms of SCN ion and two oxygen atoms of N-methylformamide which occupy the cis positions. Each pair of different kinds of metal atoms is bridged by an SCN ion and are in a three-dimensional network. Twenty-four membered rings of Co3Hg3(SCN)6, where the metal atoms are arranged hexagonally in a chair-form, are condensed two-dimensionally approximately parallel to the (100) plane. All mercury atoms on one plane are bridged by SCN ions to the cobalt atoms of the polymeric plane next to the [100] direction, while the cobalt atoms are linked by SCN ions to the mercury atoms on the next plane of the opposite side. The mfa ligands take their positions in vacancy of the network.