Structural investigations of metal–nitrate complexes. Part V. Crystal and molecular structures of dinitratotris(pyridine)-cobalt(<scp>II</scp>), -copper(<scp>II</scp>), and -zinc(<scp>II</scp>)

Cameron, A. F.; Taylor, D. W.; Nuttall, R. H.

doi:10.1039/dt9720001603

Cited by 48 publications

(13 citation statements)

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“…The cobalt-nitrogen distances are longer than those in the corresponding pyridine derivatives [26][27][28], but similar to those of bis-isothiocyanatotetrakis(4-vinylpyridine)cobalt(II) [29] and bis-isothiocyanatotetrakis (pyridine)cobalt(II)diiodoform [30].…”

Section: Description Of the Structurementioning

confidence: 98%

Pyridine-type complexes of transition-metal halides. III: Structural and thermal relationships among the cobalt(II) complexes with halide ions and 2-, 3-, and 4-Methylpyridine, the crystal structure of dibromotetrakis (3-methylpyridine)cobalt(II)

et al. 1994

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The correlation between structure and thermal properties of halogeno methylpyridine cobalt(II) is described. The ternary mixed tetrakis-derivatives and the tetrahedral bis-complexes of cobalt(II) chlorides and bromides formed with picolines are structurally very similar to the cadmium(II) and nickel(II) analogues; the iodides are somewhat different, however. On the basis of the characteristic correlation between the densities calculated from powder diffraction data and the molecular weights, the densities of a few thermal intermediates, which have not yet been prepared, are predicted. The square bipyramidal structure of dibromotetrakis(3-methylpyridine)cobalt(II) is described, and the deformation of the octahedra is discussed in detail. Structural study was extended by molecular mechanics (MM + and MMX) and molecular orbital (SINDOI) calculations.

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Section: Description Of the Structurementioning

confidence: 98%

Pyridine-type complexes of transition-metal halides. III: Structural and thermal relationships among the cobalt(II) complexes with halide ions and 2-, 3-, and 4-Methylpyridine, the crystal structure of dibromotetrakis (3-methylpyridine)cobalt(II)

et al. 1994

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“…Interestingly, one such is for Zn( N CS) 2 :py (1:4, trans );26 X is a pseudo‐halide but N‐bound here. Adducts of the form MX 2 :L (1:3) are also well‐known for nitrate species, again for a range of metals, with zinc27 and cadmium,28 among them. Here the metal atoms may be considered as lying in a trigonal‐bipyramidal environment, with the small‐“bite” bidentate nitrate ligands each occupying single equatorial sites, the metal atom lying on a site of crystallographic 2‐symmetry.…”

Section: Introductionmentioning

confidence: 99%

Structural and Infrared Spectroscopic Studies of Some Adducts of Divalent Metal Dihalides (MX₂, M = Zn, Cd; X = CI, Br, I) with Variously Hindered Monodentate Nitrogen (Pyridine) Base Ligands (L = Pyridine, 2‐Methylpyridine, and Quinoline) of 1:2 Stoichiometry

Bowmaker

Effendy

Fariati

et al. 2011

Zeitschrift anorg allge chemie

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Single crystal X-ray structure determinations are described for a number of adducts of 1:2 MX 2 :L stoichiometry, [M = divalent metal (Zn, Cd); X = halide (Cl, Br, I), L = (variously hindered) monodentate nitrogen (pyridine) base: py = pyridine, 2-mpy = 2-methylpyridine, quin = quinoline]: [(2-mpy) 2 ZnX 2 ] (X = Cl, Br) (isotypic, triclinic P1, a ≈ 7.9 6 , b ≈ 8.7, c ≈ 11.4 Å, α ≈ 86, β ≈ 79.3, γ ≈ 67°, Z = 2), [(2-mpy) 2 ZnI 2 ], [(quin) 2 ZnX 2 ] (X = Br) (isotypic with the previously determined chloride, X = Cl, triclinic, P1, a ≈ 8.7, b ≈ 9.6, c ≈ 11.1 Å, α ≈ 81, β ≈ 73, γ ≈ 72°, Z = 2); [(quin) 2 ZnI 2 ]; [(2-mpy) 2 CdX 2 ], X = Br {isotypic with [(2-mpy) 2 ZnX 2 ], X = Cl, Br (above)}, X = I {isotypic with [(2-mpy) 2 ZnI 2 ] (above)}; [(quin) 2 CdI 2 ]. A single molecule, with a four-coordinate quasi-tetrahedral metal atom, N 2 MX 2 , comprises the asymmetric unit of the structure in each of these. A one-dimensional * Prof. G. A. Bowmaker Fax: +64-9-3737422 E-Mail: ga.bowmaker@auckland.ac.nz [a]

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“…At room temperature, the single-crystal g values are 2.122 parallel to the c axis (needle axis), and 2.104 and 2.179 parallel to the a and b axis, respectively. As the crystal g values do not equate with the local molecular g values no information is available on whether or not the two independent copper ( 11) environments have a dz2 ground state.1° As the local molecular stereochemistries are so comparable to (2) and (3), Figure l(c) and (d), respectively, their local molecular g values have been used to predict the crystalg value of the complexes (2) and (3) , misaligned as in (1). These are shown in Figure 2(d)-(f), and compared with the data for (1) in Figure 2…”

Section: Preparation -Complexmentioning

confidence: 99%

The single-crystal electronic properties and stereochemistry of tri-potassium penta(nitro/nitrito)cuprate(II)

Foley¹,

Fitzgerald²,

Tyagi³

et al. 1982

J. Chem. Soc., Dalton Trans.

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The polarised single-crystal electronic and 8.s.r. spectra of K3Cu(N02), have been determined and are shown to be consistent with the stereochemistry of the two non-equivalent copper( II) environments present namely, a sevenco-ordinate [CU(NO~)~(ONO),]~-and a cis-distorted six-co-ordinate [Cu(NOz)2(ONO)z(ONO)]3-species. The i.r. spectrum is shown to be compatable with the presence of nitro-and unidentate and bidentate nitritoligands, but cannot distinguish the two types of nitrito-co-ordination. A structural pathway is suggested between the seven-co-ordinate and cis-distorted species.THE complex K3Cu(N0,), (1) has been known for a considerable time l 3 and has aroused much interest 4p5 as a possible five-co-ordinate copper( 11) complex involving five potentially equivalent nitro-ligands. The recent X-ray crystal-structure determination of (1) has established that there are two types of non-equivalent copper(@ ion environments, neither of which is five-coordinate : one involves a seven-co-ordinate pentagonalbipyramidal [CU(NO,),(ONO),]~-anion, and the other a cis-distorted [Cu(NO,),(ONO),(ONO)] 3-anion, Figure l(a) and (b), respectively. The nitrite ligands involve three distinct types of co-ordination,' namely nitro, unidentate nitrito, and bidentate nitrito. As the original e.s.r. spectrum6 of (1) was reported as axial, consistent with an elongated tetragonal-octahedra1 stereochemistry, and as the original electronic spectrum was reported as a single peak at 14 710 cm-l in contrast to the twin peaks predicted for a cis-distorted octahedral structure,8 the electronic properties have been redetermined and are now reported in the light of the known crystal structure of (1).

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Structural investigations of metal–nitrate complexes. Part V. Crystal and molecular structures of dinitratotris(pyridine)-cobalt(II), -copper(II), and -zinc(II)

Cited by 48 publications

References 0 publications

Pyridine-type complexes of transition-metal halides. III: Structural and thermal relationships among the cobalt(II) complexes with halide ions and 2-, 3-, and 4-Methylpyridine, the crystal structure of dibromotetrakis (3-methylpyridine)cobalt(II)

Pyridine-type complexes of transition-metal halides. III: Structural and thermal relationships among the cobalt(II) complexes with halide ions and 2-, 3-, and 4-Methylpyridine, the crystal structure of dibromotetrakis (3-methylpyridine)cobalt(II)

Structural and Infrared Spectroscopic Studies of Some Adducts of Divalent Metal Dihalides (MX₂, M = Zn, Cd; X = CI, Br, I) with Variously Hindered Monodentate Nitrogen (Pyridine) Base Ligands (L = Pyridine, 2‐Methylpyridine, and Quinoline) of 1:2 Stoichiometry

The single-crystal electronic properties and stereochemistry of tri-potassium penta(nitro/nitrito)cuprate(II)

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Structural investigations of metal–nitrate complexes. Part V. Crystal and molecular structures of dinitratotris(pyridine)-cobalt(II), -copper(II), and -zinc(II)

Cited by 48 publications

References 0 publications

Pyridine-type complexes of transition-metal halides. III: Structural and thermal relationships among the cobalt(II) complexes with halide ions and 2-, 3-, and 4-Methylpyridine, the crystal structure of dibromotetrakis (3-methylpyridine)cobalt(II)

Pyridine-type complexes of transition-metal halides. III: Structural and thermal relationships among the cobalt(II) complexes with halide ions and 2-, 3-, and 4-Methylpyridine, the crystal structure of dibromotetrakis (3-methylpyridine)cobalt(II)

Structural and Infrared Spectroscopic Studies of Some Adducts of Divalent Metal Dihalides (MX2, M = Zn, Cd; X = CI, Br, I) with Variously Hindered Monodentate Nitrogen (Pyridine) Base Ligands (L = Pyridine, 2‐Methylpyridine, and Quinoline) of 1:2 Stoichiometry

The single-crystal electronic properties and stereochemistry of tri-potassium penta(nitro/nitrito)cuprate(II)

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Structural and Infrared Spectroscopic Studies of Some Adducts of Divalent Metal Dihalides (MX₂, M = Zn, Cd; X = CI, Br, I) with Variously Hindered Monodentate Nitrogen (Pyridine) Base Ligands (L = Pyridine, 2‐Methylpyridine, and Quinoline) of 1:2 Stoichiometry