A new hydroxo-bridged thorium(IV) dimer: Preparation and structure of di-μ-hydroxo-bis[aquanitrato(2,6-diacetylpyridinedisemicarbazone)thorium(IV)] nitrate tetrahydrate

Avi Bino; Ruthie Chayat

doi:10.1016/S0020-1693(00)86674-8

A new hydroxo-bridged thorium(IV) dimer: Preparation and structure of di-μ-hydroxo-bis[aquanitrato(2,6-diacetylpyridinedisemicarbazone)thorium(IV)] nitrate tetrahydrate

Avi Bino^*
, Ruthie Chayat

^*Corresponding author for this work

Institute of Chemistry

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

Abstract

The pentadentate ligand 2,6-diacetylpyridinedisemicarbazone, DAPSC, reacts with Th(NO₃)₄ in ethanolwater mixture and a di-μ-hydroxo Th(IV) dimer is formed. The compound [Th₂(OH)₂(DAPSC)₂(NO₃)₂(H₂O)₂](NO₃)₄·4H₂O (I) is monoclinic, space group P2₁/n with a = 10.705(1), b = 19.008(2), c = 11.782(1) Å, β = 107.82(2)°, V = 2282(1) Å³ and Z = 2. Detailed X-ray structural analysis showed that each thorium atom in the complex is coordinated to one pentadentate DAPSC ligand, which is subjected to a considerable distortion, one bidentate nitrate group, one water ligand and two bridging hydroxo groups. The coordination number is ten and the best presentation of the polyhedron is that of a distorted bicapped square antiprism. The ThTh separation is 4.0181(6) Å and the average ThO(H) bridge is 2.366 Å. The structure was refined using 3185 reflections to an R value of 5.0%.

Original language	English
Pages (from-to)	273-276
Number of pages	4
Journal	Inorganica Chimica Acta
Volume	129
Issue number	2
DOIs	https://doi.org/10.1016/S0020-1693(00)86674-8
State	Published - 1 Jun 1987

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@article{ec310f46d1644b1e9b2a03da94f7a0d6,

title = "A new hydroxo-bridged thorium(IV) dimer: Preparation and structure of di-μ-hydroxo-bis[aquanitrato(2,6-diacetylpyridinedisemicarbazone)thorium(IV)] nitrate tetrahydrate",

abstract = "The pentadentate ligand 2,6-diacetylpyridinedisemicarbazone, DAPSC, reacts with Th(NO3)4 in ethanolwater mixture and a di-μ-hydroxo Th(IV) dimer is formed. The compound [Th2(OH)2(DAPSC)2(NO3)2(H2O)2](NO3)4·4H2O (I) is monoclinic, space group P21/n with a = 10.705(1), b = 19.008(2), c = 11.782(1) {\AA}, β = 107.82(2)°, V = 2282(1) {\AA}3 and Z = 2. Detailed X-ray structural analysis showed that each thorium atom in the complex is coordinated to one pentadentate DAPSC ligand, which is subjected to a considerable distortion, one bidentate nitrate group, one water ligand and two bridging hydroxo groups. The coordination number is ten and the best presentation of the polyhedron is that of a distorted bicapped square antiprism. The ThTh separation is 4.0181(6) {\AA} and the average ThO(H) bridge is 2.366 {\AA}. The structure was refined using 3185 reflections to an R value of 5.0\%.",

author = "Avi Bino and Ruthie Chayat",

year = "1987",

month = jun,

day = "1",

doi = "10.1016/S0020-1693(00)86674-8",

language = "אנגלית",

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T1 - A new hydroxo-bridged thorium(IV) dimer

T2 - Preparation and structure of di-μ-hydroxo-bis[aquanitrato(2,6-diacetylpyridinedisemicarbazone)thorium(IV)] nitrate tetrahydrate

AU - Bino, Avi

AU - Chayat, Ruthie

PY - 1987/6/1

Y1 - 1987/6/1

N2 - The pentadentate ligand 2,6-diacetylpyridinedisemicarbazone, DAPSC, reacts with Th(NO3)4 in ethanolwater mixture and a di-μ-hydroxo Th(IV) dimer is formed. The compound [Th2(OH)2(DAPSC)2(NO3)2(H2O)2](NO3)4·4H2O (I) is monoclinic, space group P21/n with a = 10.705(1), b = 19.008(2), c = 11.782(1) Å, β = 107.82(2)°, V = 2282(1) Å3 and Z = 2. Detailed X-ray structural analysis showed that each thorium atom in the complex is coordinated to one pentadentate DAPSC ligand, which is subjected to a considerable distortion, one bidentate nitrate group, one water ligand and two bridging hydroxo groups. The coordination number is ten and the best presentation of the polyhedron is that of a distorted bicapped square antiprism. The ThTh separation is 4.0181(6) Å and the average ThO(H) bridge is 2.366 Å. The structure was refined using 3185 reflections to an R value of 5.0%.

AB - The pentadentate ligand 2,6-diacetylpyridinedisemicarbazone, DAPSC, reacts with Th(NO3)4 in ethanolwater mixture and a di-μ-hydroxo Th(IV) dimer is formed. The compound [Th2(OH)2(DAPSC)2(NO3)2(H2O)2](NO3)4·4H2O (I) is monoclinic, space group P21/n with a = 10.705(1), b = 19.008(2), c = 11.782(1) Å, β = 107.82(2)°, V = 2282(1) Å3 and Z = 2. Detailed X-ray structural analysis showed that each thorium atom in the complex is coordinated to one pentadentate DAPSC ligand, which is subjected to a considerable distortion, one bidentate nitrate group, one water ligand and two bridging hydroxo groups. The coordination number is ten and the best presentation of the polyhedron is that of a distorted bicapped square antiprism. The ThTh separation is 4.0181(6) Å and the average ThO(H) bridge is 2.366 Å. The structure was refined using 3185 reflections to an R value of 5.0%.

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A new hydroxo-bridged thorium(IV) dimer: Preparation and structure of di-μ-hydroxo-bis[aquanitrato(2,6-diacetylpyridinedisemicarbazone)thorium(IV)] nitrate tetrahydrate

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