N 52 New manganese(II) 2d-polymer with deprotonated hydroxytetrazine bridges [Text] / M. A. Kiskin [и др.] // Inorganic Chemistry Communications. - 2005. - Vol. 8, № 6. - P524-528 Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: A reaction of pivalate polymer [Mn(OOCCMe3)2(EtOH)]n (1) with 3-hydroxy-6-(3,5-dimethylpyrazol-1-yl)-1,2,4,5-tetrazine (2, L) in EtOH solution under inert atmosphere gives rise to an antiferromagnetic 2D-polymer [Mn(?-N,N?O-3,5-Me2C3HN2C2(O)N4)2]n (4). According to the X-ray analysis data, M(L–H)2 units form a 2D-infinite network in the lattice of compound 4 where L–H is a starting deprotonated hydroxytetrazine. The reaction of 1 with bis[3,5-(dimethylpyrazolyl)]-1,2,4,5-tetrazine (3) in MeCN solution in air results in an antiferromagnetic hexanuclear pivalate cluster Mn6(?4-O)2(?-OOCCMe3)10(L1)4 (5) where L1 is a dimethylpyrazole molecule – product of hydrolytic splitting of initial bispyrazolyltetrazine. |
S 61 Simultaneous transformation of a polynuclear complex and nitroxide in the reaction of the {Co6(O)2Piv10} cluster with 2,4,4,5,5-pentamethyl-4,5-dihydro-1H-imidazolyl-(3-oxide)-1-oxyl [Electronic resource] / E. Fursova, O. A. Kuznetsova, V. Ovcharenko, G. V. Romanenko, V. Ikorskii, I. L. Eremenko, A. A. Sidorov // Polyhedron. - 2007. - Vol. 26, № 9-11. - P2079-2088 Рубрики: ХИМИЧЕСКИЕ НАУКИ \\\\Expert2\\nbo\\Polyhedron\\2007. v.26. p.2079.pdf |
P 41 Pentanuclear pivalate Ni(II) and Co(II) clusters: Modulation of molecular structures and magnetic properties // Journal of Molecular Structure. - 2003. - Vol. 656, № 1-3. - P207-224 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): CLUSTER -- MAGNETIC PROPERTIES -- TRANSITION METAL Аннотация: Reaction of nickel cluster Ni9(HOOCCMe3) 4(?4-OH)3(?3-OH) 3(?n-OOCCMe3)12 (1) or cobalt pivalate polymer [Co(OH)n(OOCCMe3)2-n] x (7) with bis[3,5-(dimethylpyrazolyl)]-1,2,4,5-tetrazine (3) in MeCN solution was found as a result in the formation of isostructural pentanuclear clusters of composition M5(?3-OH) 2(?-OOCCMe3)4(?-N,N?,N? -3,5-Me2C3HN2C2(O)N 4)4(MeCN)2 (M = Ni (4), Co (8)) with a planar spirane metal core. Reaction of cobalt complex 7 with 3 in benzene gives rise to a pentanuclear cluster Co5(?3-OH)2(?-OOCCMe 3)4(?-N,N?,N?-3,5-Me2C 3HN2C2(O)N4)4(C 5N2H8)2 (9), containing coordinated pyrazole molecules as terminating ligands instead of labile MeCN ligands in 8. The reaction of cluster 8 with 2,6-diaminopyridine (T = 85 °C) in MeCN results in the substitution of MeCN ligands and formation of a new cluster Co5(?3-OH)2(?-OOCCMe3) 4(?-N,N?,N?-3,5-Me2C3HN 2C2(O)N4)4(C5H 7N3)2 (10) with two 2,6-diaminopyridine ligands instead of MeCN molecules. The reactions of 4 and 8 with NiCl 2·6H2O in MeCN/EtOH solution (3: 1) give rise to isostructural ferromagnetic pentanuclear chloro-bridged clusters M 5(?3-OH)2(?-CI)2(? -OOCCMe3)2(?-N,N?,N?-3,5-Me 2C3HN2C2 (O)N4) 2(?-N,N?,N?,O-3,5-Me2C3HN 2C2(O)N4)2(MeCN)2 (M = Co (11), Ni (12)). The reaction of 8 with solid COCl2·6H 2O in MeCN results in new seven-nuclear ferromagnetic cluster CO 5(?3-OH)2(?-CI)2(? -OOCCMe3)2(?-N,N?,N?-3,5-Me 2C3HN2- C2(O)N4) 2(?-N,N?,N?,O-3,5-Me2C3HN 2C2(O)N4)2(MeCN) 2[Co(CH3CN)CI2]2 (13). The molecular structures of 4, 8, 9, 10, 12 and 13 established by X-ray diffraction studies and magnetic behavior of new nickel and cobalt pivalate clusters are discussed. |
T 44 The first cubane-like complex of copper based on N -carboxyethyl-tris(hydroxymethyl)aminomethane: Synthesis and crystal structure [Electronic resource] / A. V. Pestov, A. V. Virovets, N. V. Podberezskaya, Yu. G. Yatluk // Russian Journal of Coordination Chemistry. - 2008. - Vol. 34, № 1. - P1-7. - Bibliogr. : p. 7 (9 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: The interaction of acrylic acid with tris(hydroxymethyl)aminomethane (I) was studied. A simple method was suggested for preparing N-carboxyethyl-tris(hydroxymethyl)aminomethane (homotricin) (II). On the basis of compound II, the 1:1 Cu complex, [Cu(OCH2C(CH2OH)2NHCH2CH2COO)]4·nH2O (n = 4–11.25) (III), which is alkoxycarboxylate, was synthesized. The crystal structure of III was found to correspond to a cubane-like tetranuclear cluster (an automated Bruker X8Apex diffractometer with CCD detector (MoK radiation, graphite monochromator, v = 1.11°-27.5°), 8016 reflections, space group P , a = 12.5573(3), b = 19.1012(4), c = 21.2903(5) A, a = 80.7770(10)°, beta = 75.7430(10)°, y = 75.2260(10)°, V = 4761.62(19) A3, p(calcd.) = 1.704 g/cm3, Z = 4). The crystals are unstable due to the large number of water molecules \\\\Expert2\\nbo\\Russian Journal of Coordination Chemistry\\2008, v. 34, N. 1, p.1.pdf |
N 21 Nano-sized octa-nuclear nickel cationic complex: self-assembly on supramolecular level [Text] / I. L. Eremenko [и др.] // Inorganica Chimica Acta. - 2002. - Vol. 334. - P334-342 Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: Microporous one-dimensional material was synthesized by reacting Ni-9 cluster compound Ni9(HOOCCMe3)4(?4-OH)3(?3-OH)3(OOCCMe3)12 with organic ligand 3-(3,5-dimethylpyrazol-1-yl)-6-(3,5-diamino-1,3,4-thiadiazolyl)-1,2,4,5-tetrazine) (L). According to X-ray data, the nano-sized endless tubes of the material consist of stacked cationic Ni(II) octa-nuclear cyclic complexes of formula [Ni8(?-OH2)4(?-OOCCMe3)4(?2-OOCCMe3)(OOCCMe3)10L4]+ and pivalate anions ordered regularly aside the tubes. The channels of the tubes are filled with acetonitrile molecules forming an inclusion compound. |
S 98 Synthesis and structure of tert - butylacetylene copper cluster [Text] / P. A. Slepukhin, E. F. Khmara, O. A. Kuznetsova, V. I. Fylyakova, A. Ye. Yermakov, M. A. Uimin, V. N. Charushin // V Conference of Clusters Chemistry and Polynuclear Compounds "Clusters-2006", Astrakhan, Russia. - Астрахань, 2006. - P97 Рубрики: ХИМИЧЕСКИЕ НАУКИ |
P 49 Pestov, A. V. First example of the planar rectangular 18-nuclear nickel(II) hydroxo complex with n-(2-pyridylmethyl)iminodipropionic acid [Electronic resource] / A. V. Pestov, Yu. G. Yatluk, P. A. Slepukhin // Russian Journal of Coordination Chemistry. - 2011. - Vol. 37, № 8. - P619-624. - Bibliogr. : p. 624 (15 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: A planar rectangular cluster Ni(18) (I) was obtained from N-(2-pyridylmethyl)iminodipropionic acid (II). The crystal structure of complex I was determined by X-ray diffraction. Complex I is built from the octanuclear planar framework (III) of the nickel(II) hydroxo complex (Ni...Ni 2.976-3.092 ), four nickel chelates with the corresponding acid (IV), which are coplanar with the framework and are on both its sides (Ni...Ni, 2.938-3.188 ), four hydroxo complexes, and two mixed chloro chelates V), which are not coplanar with the framework (Ni...Ni, 3.141 and 3.181 ). In the chelate parts of complex I, the organic ligand is hexadentate because of bridging bonds; the coordination polyhedroLn of the metal center is a distorted square bipyramid (4 + 2) \\\\Expert2\\nbo\\Russian Journal of Coordination Chemistry\\2011, v. 37, N. 8, p.619.pdf |
S 98 Synthesis and structure of the disc-like cluster C72H 102N12Ni13O40 [Электронный ресурс] / A. V. Pestov, P. A. Slepukhin, A. E. Permyakov, Yu. G. Yatluk // Journal of Structural Chemistry. - 2012. - Vol.53, №6. - P1017-1023 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): DISC-LIKE CLUSTER Ni13 -- SYNTHESIS -- METHYLIMINODIPROPIONIC ACID Аннотация: The disc-like cluster C72H102N12Ni 13O40 is first time synthesized based on N-(2-pyridyl)methyliminodipropionic acid. Single crystal X-ray diffraction is used to determine its atomic structure. The cluster consists of seven-nuclear core: nickel(II) hydrocomplex (Ni.Ni distance 3.012-3.032 Å) and six nickel chelates of the corresponding acid arranged around its perimeter (Ni.Ni distance 2.981-3.164 Å). In the chelate part of the complex, the ligand is pentadentate owing to the formation of a bridging bond, thus organizing a coordination geometry of the metal center as a distorted square bipyramid (4+2). Liquid chromatography-mass spectrometry is employed to study the structure of the obtained nickel(II) complexes |
F 76 Formation of a cluster h2v10o 28 4– under the action oF Bronsted acids and its catalytic activity in oxidation of alkylbenzenes / M. I. Ul'yanova, M. G. Pervova, P. A. Slepukhin, A. V. Pestov, T. V. Aksenova // Russian Journal of Organic Chemistry. - 2018. - Vol. 54, № 5. - P687-690 Рубрики: ХИМИЧЕСКИЕ НАУКИ |
Unusual synthesis of triosmium carbene clusters by tandem activation of chlorohydrocarbons and heterocyclic amines / B. Y. Savkov, V. A. Maksakov, A. V. Virovets [et al.] // European journal of inorganic chemistry. - 2021. - № 10. - P989–996 Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: The carbene ligand is assembled on a cluster core of two dichloromethane and one morpholine at room temperature, which is the first example of carbene ligands formed in this way. Clusters with a carbene ligand exist as two stable isomers, as confirmed by NMR studies and conformational analysis. Possible mechanistic pathways for the formation of clusters with carbene and enamine ligands are proposed. |