cis-Diisothiocyanatobis(1,10-phenanthroline)manganese(II), [Mn(NCS)2(C12H8N2)2]

Abstract

The crystal structure of yellow cis-[Mn(phen)2(NCS)2] (phen = 1,10-phenanthroline) containing a distortedoctahedral high-spin [MnlIN6] core is reported. The structure of [Mn(phen)2(NCS)2] consists of discrete molecules of six-coordinated Mn atoms sitting on twofold rotation axes with the thiocyanates coordinating via their N atoms. The Mn--NCS distances are 2.139 (3) A, while the Mn--N distances to the 1,10-phenanthrolines are 2.294 (2) and 2.301 (3),~. The geometry is distorted from octahedral because the N--Mn--N angle formed by each 1,10phenanthroline is only 72.2 °. Four of the cis N--Mn--N angles are in the range 89.3 (1)-90.4 (1) °, while the remainder are 96.8 (2) and 106.0 (1) °. The thiocyanate ions are linear [179.4 (3) ° ] and form an angle of 166.5 (3) ° with the Mn atom. 09Computations were performed using the MolEN package (Fair, 1990).Lists of structure factors, anisotropic displacement parameters and H-atom coordinates have been deposited with the IUCr (Reference: HH1078). Copies may be obtained through The Managing Editor, International Union of Crystallography, 5 Abbey Square, Chester CH 1 2HU, England.

cis-Bis(dicyanamido)bis(1,10-phenanthroline)manganese(II) andcis-bis(dicyanamido)bis(1,10-phenanthroline)zinc(II)

“…; 2.179 (2)±2.233 (2) A Ê ; Batten et al, 1999], in which dca acts as a bridging ligand to connect two Mn cations. The four MnÐ N(phen) distances [2.257 (2)±2.319 (2) A Ê ] are similar to the corresponding distances in [Mn(phen) 2 (NCS) 2 ] (Holleman et al, 1994), [Mn(2,2 H -bipy) 2 (NCS) 2 ] (Veidis et al, 1981) and [Mn(dca) 2 (2,2 H -bipy)] (Manson et al, 1999). But unlike [Mn(phen) 2 (NCS) 2 ] (Holleman et al, 1994), in which the four MnÐN(phen) bond distances show no signi®cant difference, in (I), the four MnÐN(phen) bonds can be obviously divided into two groups, i.e.…”

“…The metal ions are sixfold coordinated by four N atoms from two phen ligands and two terminal N atoms from two dca anions, in a distorted octahedral environment. The two phen ligands are in cis positions similar to the analogous [Cu(phen) 2 (dca) 2 ] (Potocnak et al, 1995) and [Mn(phen) 2 (NCS) 2 ] compounds (Holleman et al, 1994).…”

“…In complex (I), the two shorter MnÐN(dca) distances [2.144 (2) and 2.151 (2) A Ê ] are comparable to the MnÐ N(NCS) distances in the monomeric complexes [Mn(phen) 2 (NCS) 2 ] (Holleman et al, 1994) and [Mn(2,2 Hbipy) 2 (NCS) 2 ] (Veidis et al, 1981), while typically ca 0.05 A Ê shorter than those MnÐN(dca) distances in MnÐdca complexes with an extended structure, such as [Mn(dca) 2 L] [L is a pyridine-type ligand; 2.187 (6)±2.258 (3) A Ê ; Manson et al, 1999] and [Mn(dca) 2 L 2 ] [L = DMF, CH 3 CH 2 OH etc. ; 2.179 (2)±2.233 (2) A Ê ; Batten et al, 1999], in which dca acts as a bridging ligand to connect two Mn cations.…”

“…The dihedral angle between the mean planes of the two phen is 79.67 (4) in (I) and 80.79 (4) in (II). The bond distances and angles in phen [1.323 (3)±1.448 (4) A Ê and 116.4 (3)±124.7 (3) , respectively] are all normal Holleman et al, 1994). The dca ligands are also planar and the largest deviation of atoms from their mean planes are less than 0.02 A Ê .…”

Bis(1,10-phenanthroline-κ2N,N′)bis(thiocyanato-κN)cadmium

“…For the coordination versatility of the thiocyanate anion in transition metal complexes, see: Goher et al (2000). For isotypic Mn(II), Fe(II), Co(II), Cu(II) and Zn(II) structures, see: Holleman et al (1994); Gallois et al (1990); Yin (2007); Parker et al (1996); Liu et al (2005). For another Cd II -phen complex with a CdN 6 coordination environment, see: He et al (2004).…”