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Cis-Dioxido[N'-(2-oxidobenzyl-idene)pyridinium-4-carbohydrazidato-?O,N',O']vanadium(V).

ABSTRACT: The title Schiff base complex, [V(C(13)H(10)N(3)O(2))O(2)], features a square-pyramidal coordination geometry defined by the O,N',O'-donors of the tridentate Schiff base ligand and two oxide O atoms; one oxide O atom occupies the apical position. In the crystal, pyridinium-oxide N-H?O hydrogen bonds lead to zigzag supra-molecular chains with a flattened topology along [101]. The investigated crystal was twinned by nonmerohedry; the minor component refined to 18.5?(5)%.

SUBMITTER: Shahverdizadeh GH

PROVIDER: S-EPMC3297210 | biostudies-other | 2012 Mar

REPOSITORIES: biostudies-other

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cis-Dioxido[N'-(2-oxidobenzyl-idene)pyridinium-4-carbohydrazidato-κO,N',O']vanadium(V).

Shahverdizadeh Gholam Hossein GH Ng Seik Weng SW Tiekink Edward R T ER Mirtamizdoust Babak B

Acta crystallographica. Section E, Structure reports online 20120204 Pt 3

The title Schiff base complex, [V(C(13)H(10)N(3)O(2))O(2)], features a square-pyramidal coordination geometry defined by the O,N',O'-donors of the tridentate Schiff base ligand and two oxide O atoms; one oxide O atom occupies the apical position. In the crystal, pyridinium-oxide N-H⋯O hydrogen bonds lead to zigzag supra-molecular chains with a flattened topology along [101]. The investigated crystal was twinned by nonmerohedry; the minor component refined to 18.5 (5)%. ...[more]

PMID: 22412400

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[S-Allyl-4-(4-hy-droxy-2-oxidobenzyl-idene-?O)-1-(2-oxidobenzyl-idene-?O)isothio-semicarbazidato-?N,N](ethanol-?O)dioxido-uranium(VI) ethanol monosolvate.

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| S-EPMC3393231 | biostudies-other

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Project description:In the title complex, [Mo(C16H13N3O2)O2(CH3OH)], the deprotonated Schiff base (E)-N'-[(Z)-4-oxido-4-phenyl-but-3-en-2-yl-idene]isonicotinohydrazide coordinates in a meridional fashion through the enolate O-, imine N- and amidate O-atom donors to the Mo atom of a cis-[MoO2](2+) core. The sixth coordination site of molybdenum is occupied by the O atom of a methanol mol-ecule. In this complex, the NO5 coordination sphere adopts a distorted octa-hedral coordination geometry. The metal atom is shifted by 0.335?(1)?Å from the square plane defined by the three donor atoms of the Schiff base ligand and one oxide group towards the second oxide group in the cis position. In the crystal, the complex forms inversion dimers through a pair of O-H?N hydrogen bonds involving the methanol -OH group and the pyridine N atom. Additional C-H?O contacts stack the mol-ecules along the b axis.

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