ISSN 10703284, Russian Journal of Coordination Chemistry, 2015, Vol. 41, No. 5, pp. 316–320. © Pleiades Publishing, Ltd., 2015.
Cyanidebridged complexes have been given much
attention by coordination chemists and molecular
magnetism chemists due to their versatile structures
and interesting magnetic properties [1–5]. Cyanide
salts such as KCN and NaCN are well known as po
tential bridging material [6–8]. However, they are very
poisonous. The cyanide groups in K
] and similar compounds can also act as
bridging groups to coordinate to other metals, generating
homo or heteronuclear polymeric structures [9–11].
bisSchiff bases bearing NNOO donor set derived from
ethane1,2diamine are preferred to construct complexes
with various metal atoms [12–15]. In this paper, a novel
cyanidebridged heteronuclear Co(III)–Mn(III) com
plex derived from
L) was prepared.
Materials and methods.
and ethane1,2diamine were purchased from Ald
rich. Manganese perchlorate, K
] and sol
vents are commercially available and were used with
out further purification.
salicylideneimine) was prepared by condensation of
2 : 1 molar ratio of 5chlorosalicylaldehyde with
ethane1,2diamine in methanol . Elemental
analyses for carbon, hydrogen, and nitrogen were car
The article is published in the original.
ried out with an Elementar Vario EL. Infrared spectra
were measured on KBr disks with a Hitachi I5040
CAUTION: Perchlorate salts are potentially ex
plosive and should only be handled in small quantities.
Synthesis of the complex.
A methanol solution (10 mL)
of manganese perchlorate hexahydrate (0.362 g, 1 mmol)
was added to a methanol solution (10 mL) of H
L (0.337 g,
1 mmol). The brown solution was stirred at 60
C for 1 h,
and cooled to room temperature. K
] (0.332 g,
1 mmol) dissolved in 10 mL of water was poured into a
glass tube and layered with 5 mL of methanol. Over
this, the brown solution containing the Schiff base
manganese complex was carefully layered to avoid fast
mixing of the reactants. The tube was then sealed with
Parafilm to avoid evaporation. After a week deep
brown blockshaped single crystals were found at the
bottom of the tube. The yield was 72% on the basis of
the manganese precursor.
(O–H); 2140, 2125,
Xray structure determination.
Data collection for
the complex was performed with a Bruker Apex II CCD
diffractometer at 298 K. The structure was solved by di
anal. calcd, %: C, 41.25; H, 2.92; N, 12.66.
Found, %: C, 41.39; H, 3.01; N, 12.50.
Synthesis, Characterization, and Crystal Structure of a Novel
CyanideBridged Heteronuclear Co(III)Mn(III) Complex Derived
X. H. Shen*, Z. W. Zhang, L. J. Shao, Q. Lian, and C. Liu
Department of Chemistry, Hebei Normal University of Science & Technology, Qinhuangdao, 066600 P.R. China
Received October 18, 2014
With a bisSchiff base
L) and K
novel cyanidebridged heteronuclear Co(III)–Mn(III) complex was prepared and characterized by elemen
tal analysis, IR spectroscopy and Xray structure determination (CIF file CCDC no. 1029225). The complex
crystallizes in the monoclinic space group
with unit cell dimensions
= 0.0441, and
= 0.0999. Single crystal Xray
diffraction analysis reveals that two [Mn(L)(OH
units are linked through a [Co(CN)
a trinuclear Mn–Co–Mn moiety. The Mn–Co–Mn moieties are further linked through K atoms to form a
1D chain. The chains are stacked through
interactions. The Mn and Co atoms are in octahedral coor
dination, and the K atom is in square planar geometry.