Cobalt and nickel complexes of open-chain thioether ligands terminated by salicylaldimine functionality*This article has a companion paper in this issue (doi: 10.1139/v11-083).

Syntheses of 1,11-bis(salicylaldimine)-3,6,9-trithiaundecane (H2L1), 1,11-bis(salicylaldimine)-6-oxa-3,9-dithiaundecane (H2L2), and 1,8-bis(salicylaldimine)-3,6-dithiaundecane (H2L3), their nickel complexes [Ni(L1)]·H2O (I), [Ni(HL2)][OAc] (II), [Ni(L3)·HOAc]2[Ni(L3)·2HOAc]·3H2O (III), [Ni(HL1-sal)]Cl2·H2O (IV), [Ni(HL2-sal)]Cl2·CH3OH (V), [Ni(L3-sal)Cl]·H2O (VI), {[Ni(HL1-sal)]Br2}2{[Ni(L1-sal)]Br}·H2O (VII), {[Ni(HL2-sal)]Br2}2{[Ni(L2-sal)]Br}·2CH3OH (VIII), {[Ni(HL3-sal)Br]Br}[Ni(L3-sal)Br]·2CH3OH (IX), [Ni(HL3-sal)Br]Br·CH3OH (X), [Ni(HL3)Br]·2H2O (XI), [Ni(HL1)]2[BF4]2·5H2O (XII), [Ni(HL2)]2[BF4]2·3H2O (XIII), [Ni(HL3)]2[BF4]2·CH3CN (XIV), and [Ni(HL3)]2[BF4]2·3H2O (XV) and their cobalt complexes [Co(L1-sal)][BF4]2 (XVI), [Co(L2)][OAc]·3H2O (XVII), [Co(L3)][OAc]·3H2O (XVIII), [Co(L3)][BF4] (XIX), and [Co(L3-sal)(CH3OH)][BF4]2·CH3OH (XX) are reported. Single crystal X-ray structural studies for III, XIV, XVI, and XIX are described. Cyclic voltammograms of the ligands and of I, II, III, VII, VIII, X, XIV, and XIX are discussed. Electronic spectra of the ligands and complexes are discussed.

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Copper(II) complexes of open-chain thioether ligands terminated by salicylaldimine functionality*This article has a companion paper in this issue (doi: 10.1139/v11-081).

Canadian Journal of Chemistry ◽

10.1139/v11-083 ◽

2011 ◽

Vol 89 (10) ◽

pp. 1190-1201 ◽

Cited By ~ 2

Author(s):

C. Robert Lucas ◽

John M.D. Byrne ◽

Julie L. Collins ◽

Louise N. Dawe ◽

David O. Miller

Keyword(s):

Magnetic Susceptibility ◽

Single Crystal ◽

Variable Temperature ◽

Companion Paper ◽

Structural Studies ◽

Binuclear Copper ◽

Open Chain ◽

X Ray ◽

Variable Temperature Magnetic Susceptibility ◽

Coordination Spheres

From 1,11-bis(salicylaldimine)-3,6,9-trithiaundecane (H2L1), 1,11-bis(salicylaldimine)-6-oxa-3,9-dithiaundecane (H2L2), and 1,8-bis(salicylaldimine)-3,6-dithiaundecane (H2L3), syntheses for [Cu(L1)]2 (I), Cu(L2)·CH3OH (II), Cu(L3) (III), [Cu(HL3)][CH3COO] (IV), [Cu(HL1-sal)]Cl2 (V), Cu4(L1)2Br4(H2O)2·2H2O (VI) and Cu2(L2)Br2·xH2O (VII) are described. Single crystal X-ray structural studies for I, III and VII are reported. Variable temperature magnetic susceptibility studies of I, VI and VII are discussed. The examination of VII represents the first magneto-structural study of a binuclear copper(II) species with NSO3Br coordination spheres. This study examines perturbation by one or more of the donor atoms so that none of the known magnetostructural models predicts the copper–copper coupling.

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Structural variations of nickel complexes in NiS4 and NiS2PN coordination environments: spectral and single-crystal X-ray structural studies on bis(4-methylpiperidinecarbodithioato-S,S′)nickel(II) and (4-methylpiperidinecarbodithioato-S,S′)(thiocyanato-N)(triphenylphosphine)nickel(II)

Monatshefte für Chemie - Chemical Monthly ◽

10.1007/s00706-009-0199-2 ◽

2009 ◽

Vol 140 (12) ◽

pp. 1431-1436 ◽

Cited By ~ 12

Author(s):

N. Srinivasan ◽

V. Sathyaselvabala ◽

K. Kuppulekshmy ◽

P. Valarmathi ◽

S. Thirumaran

Keyword(s):

Single Crystal ◽

Nickel Complexes ◽

Structural Studies ◽

Structural Variations ◽

X Ray

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Single-crystal polarized electronic spectra of the compounds tetra-[Greek letter mu]-acetatodimolybdenum(II), tetrakis-[Greek letter mu]-(trifluoroacetato)-dimolybdenum(II), potassium-diaquo-tetra-[Greek letter mu]-sulfatodiplatinum(III), and the X-ray diffraction crystal structure of tetra-[Greek letter mu]-acetatodimolybdenum(II)Â·potassium chloride

10.31274/rtd-180817-6124 ◽

1981 ◽

Author(s):

Robert Alan Newman

Keyword(s):

Crystal Structure ◽

Single Crystal ◽

Electronic Spectra ◽

X Ray Diffraction ◽

Greek Letter ◽

X Ray

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Spectra–structure relationship: Syntheses, characterization, single crystal X-ray structural studies and packing analyses of two novel copper(II) complexes: [Cu(pyridine)2(H2O)4](p-toluenesulfonate)2 and [Cu(β-picoline)2(H2O)4](p-toluenesulfonate)2

Journal of Molecular Structure ◽

10.1016/j.molstruc.2011.02.043 ◽

2011 ◽

Vol 994 (1-3) ◽

pp. 21-28 ◽

Cited By ~ 3

Author(s):

Raj Pal Sharma ◽

Anju Saini ◽

Sukhjinder Singh ◽

Ajnesh Singh ◽

Paloth Venugopalan ◽

...

Keyword(s):

Single Crystal ◽

Structural Studies ◽

X Ray ◽

Structure Relationship

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Comparative Structural Studies on Three-Coordinate Copper(I) Halide Complexes With Tertiary Phosphines. Crystal Structures of [(PPh2Mes)CuX]2 and [(PPhMes2)CuX]2 (Mes = Mesityl X = Cl, Br, I)

Australian Journal of Chemistry ◽

10.1071/ch9921155 ◽

1992 ◽

Vol 45 (7) ◽

pp. 1155 ◽

Cited By ~ 11

Author(s):

GA Bowmaker ◽

D Camp ◽

RD Hart ◽

PC Healy ◽

BW Skelton ◽

...

Keyword(s):

Single Crystal ◽

Crystal Structures ◽

Copper Atom ◽

Structural Studies ◽

Coordination Environment ◽

X Ray ◽

Tertiary Phosphines ◽

Structure Determinations ◽

Halide Complexes ◽

The Subject

The 1 : 1 complexes of the substituted triphenylphosphine ligands mesityldiphenylphosphine and dimesitylphenylphosphine with copper(1) chloride, bromide and iodide have been the subject of single-crystal X-ray structure determinations at 295 K. All six complexes crystallize as air-stable dimeric molecules, [(PPh2Mes)CuX]2 and [ (PPhMes2)CUX]2 with each copper atom in a distorted trigonal PCuX2. coordination environment. Crystals of [(PPh2Mes)CuCl]2 (1) are monoclinic, P21/n, a 9.961(3), b 18.687(6), c 11.009(7) Ǻ, β 114.63(4)°; R was 0.049 for 2450 'observed' reflections. [(PPh2Mes)CuBrI2 (2) is monoclinic, P21/n, a 9.939(2), b 18.832(6), c 11.238(6) Ǻ, β 115.36(3)°; R was 0.046 for 1803 'observed' reflections. [(PPh2Mes)CuI]2.4/3 C6H6 (3) is rhornbohedral, R3, a 36.877(8), c 9.047(5) A; R was 0.039 for 2537 'observed' reflections. Crystals of [(PPhMes2)CuCl]2.2MeCN (4) are triclinic, Pi, a 15.783(7), b 9.570(4), c 8.914(4) Ǻ, α 72.43(3), β 76.37(3), γ 74.03(3)°; R was 0.045 for 3341 'observed' reflections. [(PPhMes2)CuBr]2.3C6H6 (5) is monoclinic, C2/c, a 9.694(6), b 30.15(2), c 20.66(2) Ǻ, β 98.00(7)°; R was 0.047 for 2117 'observed' reflections. [(PPhMes2)CuI]2.2MeCN (6) is orthorhombic, PP1nb, a 11.694(8), b 14.77(1), c 29.76(3) Ǻ; R was 0.049 for 3447 'observed' reflections. Cu-P bond lengths are: 2.196(2) A (1); 2.198(3) Ǻ (2); 2.222(5) and 2.226(5) Ǻ (3); 2.202(1) Ǻ (4); 2.197(3) A (5); 2.201(4) and 2.264(5) Ǻ (6). The geometries of the LCuX2 and CuX2Cu units are compared with data reported for other monomeric and dimeric compounds for both phosphorus- and nitrogen-based ligands L.

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Experimental and computational structural study of two hindered aminoanthraquinones in crystals and solutions

Zeitschrift für Kristallographie - Crystalline Materials ◽

10.1524/zkri.2000.215.9.542 ◽

2000 ◽

Vol 215 (9) ◽

Cited By ~ 3

Author(s):

A.V. Yatsenko ◽

K.A. Paseshnichenko ◽

S.I. Popov

Keyword(s):

Solid State ◽

Single Crystal ◽

Electronic Spectra ◽

Molecular Structures ◽

Amino Group ◽

Single Crystal Diffraction ◽

Molecular Conformations ◽

X Ray ◽

Crystal And Molecular Structures ◽

Visible Spectra

The crystal and molecular structures of 2-methyl-1-methylamino-anthraquinone (I) and 1-methylphenylamino-anthraquinone (II) were studied by the X-ray single-crystal diffraction and the visible spectra of crystalline specimens and their solutions were recorded. The molecule I is closely planar, whereas in the molecule II the amino group is 58° rotated out of the plane of the anthraquinone skeleton. In both structures the molecules pack in stacks. The comparison of experimental and calculated (on the DFT and AM1 levels) molecular structures, together with the comparison of experimental and INDO/S-calculated electronic spectra, give the evidence that molecular conformations (especially for II) change upon transfer from the solid state to solutions, and the π-delocalisation throughout the whole molecule enhances in the solid state.

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