Oxidationsprodukt von Bis-(1,2-benzochinondioximato)nickel(II), [Ni(BCD)2], mit Jod: Kristall- und Molekülstruktur

Endres, H.; Keller, H. J.; Moroni, W.; Weiß, Johannes

doi:10.1107/s0567740875007595

Cited by 30 publications

(9 citation statements)

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“…These Ni‚‚‚ Ni contacts are reminiscent of those reported in solid bis-(dimethylglyoximato)nickel(II) 14 with a Ni‚‚‚Ni distance at 3.250(5) Å and its partially oxidized forms Ni(bqd) 2 I 0.018 with Ni‚‚‚Ni contacts at 3.180(2) Å. 15,16 These attractive forces in the face-to-face dimers are considered to involve both metalmetal σ and δ bonding as well as ligand-ligand π bonding. Magnetic Properties of Complexes.…”

Section: Synthesis Andmentioning

confidence: 58%

Synthesis, Structure, Magnetism, and Spectroscopic Properties of Some Mono- and Dinuclear Nickel Complexes Containing Noninnocent Pentane-2,4-dione Bis(S-alkylisothiosemicarbazonate)-Derived Ligands

et al. 1997

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Deprotonation of [Ni II (H 2 L 1 )]I‚0.5CH 3 OH (1), where (H 2 L 1 ) -represents the ligand pentane-2,4-dione bis(Smethylisothiosemicarbazonate(-), in an ethanol solution of aqueous ammonia under argon affords air-sensitive red-brown [Ni II (HL 1 )]‚C 2 H 5 OH (2). Air oxidation of 2 in ethanol/NH 3 yields the paramagnetic green-black dinuclear species [Ni(L 1 -L 1 )Ni] (3) where the ligand (L 1 -L 1 ) 6is formed by oxidative C-C coupling at the methine carbon atoms of (L 1 ) 3-. In this formulation the nickel ions are trivalent. Reaction of 3 in ethanol with concentrated HCl affords red diamagnetic [Ni II (H 2 L 1 -L 1 H 2 )Ni1I I ]Cl 2 ‚0.5C 2 H 5 OH (4). This reaction is a 2 electron reduction of 3 with concomittant protonation at the ligand. Deprotonation of 4 in C 2 H 5 OH/ammonia under argon gives red-brown [Ni II (HL 1 -L 1 H)Ni II ]‚C 2 H 5 OH (5). Replacement of the S-methyl groups in (H 2 L 1 ) -by two dodecyl groups, (CH 2 ) 11 CH 3 , gives the ligand (H 2 L 2 ) -; the complexes [Ni II (H 2 L 2 )I (6) and their dinuclear, oxidized forms [Ni(L 2 -L 2 )Ni] (7) have been prepared analogously. The molecular structure of 3 (C 18 H 28 N 12 Ni 2 S 4 ) has been determined by X-ray crystallography. Crystal data for 3: space group P1 h with a ) 11.475(2) Å, b ) 13.615(1) Å, c ) 18.207(6) Å, R ) 83.87(1)°, β ) 88.36(1)°, γ ) 72.58(1)°, V ) 2698.7(10) Å 3 , and Z ) 2. The structure refinement converged to R ) 0.066 for 8865 unique reflections. Electronic and NMR spectra, the magnetism, and electrochemistry of new compounds are reported. It is shown that 3,4-diacetyl-2,5-hexanedione-tetrakis(Salkylisothiosemicarbazonates) are noninnocent ligands in 3 and 7.

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Section: Synthesis Andmentioning

confidence: 58%

Synthesis, Structure, Magnetism, and Spectroscopic Properties of Some Mono- and Dinuclear Nickel Complexes Containing Noninnocent Pentane-2,4-dione Bis(S-alkylisothiosemicarbazonate)-Derived Ligands

et al. 1997

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“…(3) A. The large N-C-C'-N' torsion angle of 33 (2)°a bout the C-C' bond is a further indication of the nonplanarity of the chelate ring. This puckering of the inner core of the Ni(dpg)2 unit appears to result from the close approach of the two adjacent phenyl groups on the chelate and also from the close approach of the molecules along the stacking axis.…”

Section: Resultsmentioning

confidence: 99%

Rational synthesis of unidimensional mixed valence solids. Structural, spectral, and electrical studies of charge distribution and transport in partially oxidized nickel and palladium bisdiphenylglyoximates

Cowie¹,

Gleizes²,

Grynkewich³

et al. 1979

J. Am. Chem. Soc.

123

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“…0.08 A shorter than the interplanar separation in the orthorhombic modification of Ni (dbtaa) (3.29 A). Metal-metal separations of 3.153 A, 3.271 A and 3.252 A were reported for Ni (bqd)2b.5 [ 141,Ni ( d~g )~I [ 151 and Ni (pc)I [2] (bqd = 1,2-benzoquinonedioximato, dpg= diphenylglyoximato). Iodine atoms are confined to the channels formed by the molecule stacks, with two chains of iodine per stack.…”

Section: N~( C I S H I~n~) I~mentioning

confidence: 99%

ChemInform Abstract: METALLIC CONDUCTIVITY IN METAL TETRAAZA(14)ANNULENE IODIDES: THE CRYSTAL STRUCTURES OF DIHYDRODIBENZO(B,I)‐1,4,8,11‐TETRAAZACYCLOTETRADECINENICKEL AND ‐PALLADIUM IODIDES

Hunziker

Hilti

Rihs

1981

Chemischer Informationsdienst

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Oxidationsprodukt von Bis-(1,2-benzochinondioximato)nickel(II), [Ni(BCD)2], mit Jod: Kristall- und Molekülstruktur

Cited by 30 publications

References 0 publications

Synthesis, Structure, Magnetism, and Spectroscopic Properties of Some Mono- and Dinuclear Nickel Complexes Containing Noninnocent Pentane-2,4-dione Bis(S-alkylisothiosemicarbazonate)-Derived Ligands

Synthesis, Structure, Magnetism, and Spectroscopic Properties of Some Mono- and Dinuclear Nickel Complexes Containing Noninnocent Pentane-2,4-dione Bis(S-alkylisothiosemicarbazonate)-Derived Ligands

Rational synthesis of unidimensional mixed valence solids. Structural, spectral, and electrical studies of charge distribution and transport in partially oxidized nickel and palladium bisdiphenylglyoximates

ChemInform Abstract: METALLIC CONDUCTIVITY IN METAL TETRAAZA(14)ANNULENE IODIDES: THE CRYSTAL STRUCTURES OF DIHYDRODIBENZO(B,I)‐1,4,8,11‐TETRAAZACYCLOTETRADECINENICKEL AND ‐PALLADIUM IODIDES

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