Structure of cyano-bridged Eu(III)—Co(III) bimetallic assembly and its application to photophysical verification of photomagnetic phenomenon
-
T. Akitsu
and
Y. Einaga
Abstract
New crystal structure of Eu(DMF)4(H2O)3Co(CN)6·H2O (DMF = N,N′-dimethylformamide) (Eu-Co) has been determined to be monoclinic, P2(1)/n, a = 19.796(12) Å, b = 8.862(11) Å, c = 17.525(10) Å, β = 96.26(5)°, V = 3056(5) Å3, Z = 4. The Eu(III) ion adopts an antiprismatic eight-coordination and forms a cyano bridge with r(Eu-N) = 2.496(7) Å and Θ(Eu-N-C) = 165.7(7)° to the Co(III) ion. The complex exhibits some common features with the Eu-Fe complex. Diffuse reflectance electronic spectra and magnetic susceptibility of Eu-Cr, Eu-Mn, Eu-Fe, and Eu-Co complexes were compared. By substituting the metal ions, both electronic and structural features affected the charge transfer bands and superexchange interactions concerning cyanide ligands. In addition, only Eu-Co exhibited 5 D 0 → 7 F 2 and 5 D 0 → 7 F 1 luminescence bands at 16300 cm−1 and 16900 cm−1, respectively at 298 K (λex = 360 nm (27000 cm−1)), because quenching by cyano-bridged ions did not prevent Eu(III) ion from exhibiting emission. Thus, only Eu-Co may be suitable for verification of an assumption of mechanism concerning drastic photoinduced magnetic changes for Nd-Fe. Merely small decrease of magnetization was observed for Eu-Co after UV light irradiation at 2.0 K. This result was attributed to slight structural changes around cyano bridges without transitions of spin states.
[1] Sato, O., Acc. Chem. Res. 36, 692 (2003). http://dx.doi.org/10.1021/ar020242z10.1021/ar020242zSearch in Google Scholar PubMed
[2] Sato, O., Hayami, S., Einaga, Y., and Gu, Z.-Z., Bull. Chem. Soc. Jpn. 76, 443 (2003). http://dx.doi.org/10.1246/bcsj.76.44310.1246/bcsj.76.443Search in Google Scholar
[3] Sato, O., Iyoda, T., Fujishima, A., and Hashimoto, K., Science 272, 704 (1996). http://dx.doi.org/10.1126/science.272.5262.70410.1126/science.272.5262.704Search in Google Scholar PubMed
[4] Li, G., Akitsu, T., Sato, O., and Einaga, Y., J. Am. Chem. Soc. 125, 12396 (2003). http://dx.doi.org/10.1021/ja037183k10.1021/ja037183kSearch in Google Scholar PubMed
[5] Figuerola, A., Diaz, C., Ribas, J., Tangoulis, V., Granell, J., Lloret, F., Mahia, J., and Maestro, M., Inorg. Chem. 42, 641 (2003). http://dx.doi.org/10.1021/ic025669g10.1021/ic025669gSearch in Google Scholar PubMed
[6] Akitsu, T. and Einaga, Y., Polyhedron 25, 2655 (2006). http://dx.doi.org/10.1016/j.poly.2006.03.02610.1016/j.poly.2006.03.026Search in Google Scholar
[7] Li, G., Sato, O., Akitsu, T., and Einaga, Y., J. Solid State Chem. 177, 3835 (2004). http://dx.doi.org/10.1016/j.jssc.2004.06.01510.1016/j.jssc.2004.06.015Search in Google Scholar
[8] Li, G., Akitsu, T., Sato, O., and Einaga, Y., J. Coord. Chem. 57, 855 (2004). http://dx.doi.org/10.1080/0095897041000172143910.1080/00958970410001721439Search in Google Scholar
[9] Li, G., Akitsu, T., Sato, O., and Einaga, Y., J. Coord. Chem. 57, 189 (2004). http://dx.doi.org/10.1080/0095897041000167109310.1080/00958970410001671093Search in Google Scholar
[10] Akitsu, T. and Einaga, Y., Inorg. Chim. Acta 359, 1421 (2006). http://dx.doi.org/10.1016/j.ica.2005.12.00410.1016/j.ica.2005.12.004Search in Google Scholar
[11] Cunningham, B. P. and Kautz, J. A., J. Chem. Crystallogr. 30, 671 (2000). http://dx.doi.org/10.1023/A:101195231699910.1023/A:1011952316999Search in Google Scholar
[12] Combs, R. A., Farmer, J. M., and Kautz, J. A., Acta Crystallogr., Sect. C: Cryst. Struct. Commun. 56, 1420 (2000). http://dx.doi.org/10.1107/S010827010001204X10.1107/S010827010001204XSearch in Google Scholar
[13] Li, J.-R., Cai, L.-Z., Zou, R.-Q., Zhou, G.-W., Guo, G.-C., Bu, X.-H., and Huang, J.-S., Acta Crystallogr., Sect. E: Struct. Rep. Online 58, m686 (2002). http://dx.doi.org/10.1107/S160053680201957810.1107/S1600536802019578Search in Google Scholar
[14] Marvaud, V., Decroix, C., Scuiller, A., Guyard-Duhayon, C., Vaissermann, J., Gonnet, F., and Verdaguer, M., Chem. Eur. J. 9, 1677 (2003). http://dx.doi.org/10.1002/chem.20039019210.1002/chem.200390192Search in Google Scholar PubMed
[15] Marvaud, V., Decroix, C., Scuiller, A., Tuyeras, F., Guyard-Duhayon, C., Vaissermann, J., Marrot, M., Gonnet, F., and Verdaguer, M., Chem. Eur. J. 9, 1692 (2003). http://dx.doi.org/10.1002/chem.20039019310.1002/chem.200390193Search in Google Scholar PubMed
[16] Kou, H.-Z., Gao, S., and Jin, X., Inorg. Chem. 40, 6295 (2001). http://dx.doi.org/10.1021/ic010304210.1021/ic0103042Search in Google Scholar PubMed
[17] Kou, H.-Z., Gao, S., Sun, B.-W., and Zhang, J., Chem. Mater. 13, 1431 (2001). http://dx.doi.org/10.1021/cm000889i10.1021/cm000889iSearch in Google Scholar
[18] Chen, W.-T., Wang, M.-S., Cai, L.-Z., Xu, G., Akitsu, T., Akita-Tanaka, M., Guo, G.-C., and Huang, J.-S., Cryst. Growth Des. 6, 1738 (2006). http://dx.doi.org/10.1021/cg060199c10.1021/cg060199cSearch in Google Scholar
[19] Akitsu, T. and Einaga, Y., Asian Chem. Lett., in press. Search in Google Scholar
[20] Gawryszewska, P., Sokolnicki, J., and Legendziewicz, J., Coord. Chem. Rev. 249, 2489 (2005). http://dx.doi.org/10.1016/j.ccr.2005.06.02110.1016/j.ccr.2005.06.021Search in Google Scholar
[21] Kunkely, H. and Vogler, A., Inorg. Chem. Commun. 7, 770 (2004). http://dx.doi.org/10.1016/j.inoche.2004.04.01210.1016/j.inoche.2004.04.012Search in Google Scholar
[22] Altomare, A., Cascarano, G., Giacovazzo, C., Guagliardi, A., Brurla, M. C., Polidori, G., and Camalli, M., J. Appl. Crystallogr. 27, 435 (1994). http://dx.doi.org/10.1107/S002188989400021X10.1107/S002188989400021XSearch in Google Scholar
[23] Sheldrick, G. M., SHELXL97 Program for the Refinement of Crystal Structures. University of Gottingen, 1997. Search in Google Scholar
[24] teXsan, Version 1.11. Molecular Structure Corporation, The Woodlands, TX, 2001. Search in Google Scholar
[25] Lever, A. B. P., Inorganic Electronic Spectroscopy, 2nd Edition. Elsevier, Amsterdam, 1984. Search in Google Scholar
[26] Rao, B. V., Rambabu, U., and Buddhudu, S., Physica B (Amsterdam) 382, 86 (2006). 10.1016/j.physb.2006.02.003Search in Google Scholar
[27] Azumi, T. and McGlynn, S. P., J. Phys. Chem. A 108, 6968 (2004) and references therein. http://dx.doi.org/10.1021/jp049105510.1021/jp0491055Search in Google Scholar
[28] Barja, B., Baggio, R., Calvo, R., Garland, M. T., Perec, M., and Rizzi, A., Inorg. Chim. Acta 359, 3921 (2006). http://dx.doi.org/10.1016/j.ica.2006.04.04610.1016/j.ica.2006.04.046Search in Google Scholar
[29] Akitsu, T. and Einaga, Y., Acta Crystallogr., Sect. E: Struct. Rep. Online 62, m750 (2006). http://dx.doi.org/10.1107/S160053680600810510.1107/S1600536806008105Search in Google Scholar
[30] Akitsu, T. and Einaga, Y., Acta Crystallogr., Sect. E: Struct. Rep. Online 62, m862 (2006). http://dx.doi.org/10.1107/S160053680601048810.1107/S1600536806010488Search in Google Scholar
[31] Akitsu, T. and Einaga, Y., Inorg. Chim. Acta 36, 497 (2007). http://dx.doi.org/10.1016/j.ica.2006.07.09910.1016/j.ica.2006.07.099Search in Google Scholar
[32] Costes, J. P., Dahan, F., Dupuis, A., and Laurent, J. P., Chem. Eur. J. 4, 1616 (1998). http://dx.doi.org/10.1002/(SICI)1521-3765(19980904)4:9<1616::AID-CHEM1616>3.0.CO;2-A10.1002/(SICI)1521-3765(19980904)4:9<1616::AID-CHEM1616>3.0.CO;2-ASearch in Google Scholar
© 2007 Institute of Chemistry, Slovak Academy of Sciences
Articles in the same Issue
- A review of methods for synthesis of nanostructured metals with emphasis on iron compounds
- Effect of selenium oxidation state on cadmium translocation in chamomile plants
- Optimization of ammonium nitrate concentration in single-stage continuous cultures of Aspergillus niger with biomass retention
- Behaviour of inorganic constituents of municipal sewage sludge during fluidized-bed combustion
- Profile distribution of As(III) and As(V) species in soil and groundwater in Bozanta area
- Structure of cyano-bridged Eu(III)—Co(III) bimetallic assembly and its application to photophysical verification of photomagnetic phenomenon
- Synthesis and characterization of oligo-4-[(pyridin-3-ylimino)methyl]phenol
- Relationship between physicochemical properties, lipophilicity parameters, and local anesthetic activity of dibasic esters of phenylcarbamic acid
- Improved DPPH determination for antioxidant activity spectrophotometric assay
- Notes on notation of sodium oxofluoroaluminate anions
- Determination of the enthalpy of fusion of Na3FeF6
- Controlled solvothermal synthesis of PbS quasi-nanorods by calix[4]arene
- Palladium-catalyzed heck and suzuki coupling in glycerol
- Synthesis of new condensed and cyclized coumarin derivatives
- M. Hartman, O. Trnka, and M. Pohořelý: Fluidization behavior of oil-contaminated sand
Articles in the same Issue
- A review of methods for synthesis of nanostructured metals with emphasis on iron compounds
- Effect of selenium oxidation state on cadmium translocation in chamomile plants
- Optimization of ammonium nitrate concentration in single-stage continuous cultures of Aspergillus niger with biomass retention
- Behaviour of inorganic constituents of municipal sewage sludge during fluidized-bed combustion
- Profile distribution of As(III) and As(V) species in soil and groundwater in Bozanta area
- Structure of cyano-bridged Eu(III)—Co(III) bimetallic assembly and its application to photophysical verification of photomagnetic phenomenon
- Synthesis and characterization of oligo-4-[(pyridin-3-ylimino)methyl]phenol
- Relationship between physicochemical properties, lipophilicity parameters, and local anesthetic activity of dibasic esters of phenylcarbamic acid
- Improved DPPH determination for antioxidant activity spectrophotometric assay
- Notes on notation of sodium oxofluoroaluminate anions
- Determination of the enthalpy of fusion of Na3FeF6
- Controlled solvothermal synthesis of PbS quasi-nanorods by calix[4]arene
- Palladium-catalyzed heck and suzuki coupling in glycerol
- Synthesis of new condensed and cyclized coumarin derivatives
- M. Hartman, O. Trnka, and M. Pohořelý: Fluidization behavior of oil-contaminated sand
