Three coordination modes of the pentadentate ligand 2,6-diacetylpyridinedisemicarbazone

Avi Bino; Ron Frim; Marcel Van Genderen

doi:10.1016/S0020-1693(00)88368-1

Three coordination modes of the pentadentate ligand 2,6-diacetylpyridinedisemicarbazone

Avi Bino^*
, Ron Frim
, Marcel Van Genderen

^*Corresponding author for this work

Institute of Chemistry

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

64 Scopus citations

Abstract

The pentadentate ligand 2,6-diacetylpyridinedisemicarbazone, DAPSC, reacts with Cr(NO₃)₃·9H₂O and forms two kinds of complexes. At pH=3, the ligand is singly-deprotonated and crystals of [Cr- (DAPSCH)(H₂O)₂](NO₃)₂·H₂O (Ia) are obtained. Evaporation of a solution at pH=0, yields crystals of [Cr(DAPSC)(H₂O)₂](NO₃)₃·2H₂O (II) in which the ligand is fully protonated. The reaction of DAPSC with UO₂(O₂CCH₃)₂ in methanol, followed by crystallization of the product from DMSO yields crystals of [UO₂(DAPSC2H)(H₂O)]·2DMSO (III) in which the ligand is fully deprotonated. Compound Ia is monoclinic, space group P2₁/n with a=11.746(1), b=14.752(2), c=11.866(1) Å,β=105.53(2)°, V= 1981(1) Å³ and Z=4. Compound II is monoclinic, space group, P2₁/n with a=38.000(3), b= 14.939(2), c=8.233(1) Å, β=96.12(2)°, V= 4647(1) Å and Z=8. Compound III is monoclinic, space group P2₁/n with a=18.048(2), b=15.207(2), c=8.842(1) Å,β=97.72(2)°, V=2405(1) Å³ and Z=4. The structures were refined using 2084, 4169 and 2516 reflections to R values of 4.4%, 7.8% and 4.8% respectively.

Original language	English
Pages (from-to)	95-101
Number of pages	7
Journal	Inorganica Chimica Acta
Volume	127
Issue number	1
DOIs	https://doi.org/10.1016/S0020-1693(00)88368-1
State	Published - 16 Feb 1987

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@article{55904b318e1c479587dd5ba404e0e842,

title = "Three coordination modes of the pentadentate ligand 2,6-diacetylpyridinedisemicarbazone",

abstract = "The pentadentate ligand 2,6-diacetylpyridinedisemicarbazone, DAPSC, reacts with Cr(NO3)3·9H2O and forms two kinds of complexes. At pH=3, the ligand is singly-deprotonated and crystals of [Cr- (DAPSCH)(H2O)2](NO3)2·H2O (Ia) are obtained. Evaporation of a solution at pH=0, yields crystals of [Cr(DAPSC)(H2O)2](NO3)3·2H2O (II) in which the ligand is fully protonated. The reaction of DAPSC with UO2(O2CCH3)2 in methanol, followed by crystallization of the product from DMSO yields crystals of [UO2(DAPSC2H)(H2O)]·2DMSO (III) in which the ligand is fully deprotonated. Compound Ia is monoclinic, space group P21/n with a=11.746(1), b=14.752(2), c=11.866(1) {\AA},β=105.53(2)°, V= 1981(1) {\AA}3 and Z=4. Compound II is monoclinic, space group, P21/n with a=38.000(3), b= 14.939(2), c=8.233(1) {\AA}, β=96.12(2)°, V= 4647(1) {\AA} and Z=8. Compound III is monoclinic, space group P21/n with a=18.048(2), b=15.207(2), c=8.842(1) {\AA},β=97.72(2)°, V=2405(1) {\AA}3 and Z=4. The structures were refined using 2084, 4169 and 2516 reflections to R values of 4.4\%, 7.8\% and 4.8\% respectively.",

author = "Avi Bino and Ron Frim and \{Van Genderen\}, Marcel",

year = "1987",

month = feb,

day = "16",

doi = "10.1016/S0020-1693(00)88368-1",

language = "אנגלית",

volume = "127",

pages = "95--101",

journal = "Inorganica Chimica Acta",

issn = "0020-1693",

publisher = "Elsevier B.V.",

number = "1",

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T1 - Three coordination modes of the pentadentate ligand 2,6-diacetylpyridinedisemicarbazone

AU - Bino, Avi

AU - Frim, Ron

AU - Van Genderen, Marcel

PY - 1987/2/16

Y1 - 1987/2/16

N2 - The pentadentate ligand 2,6-diacetylpyridinedisemicarbazone, DAPSC, reacts with Cr(NO3)3·9H2O and forms two kinds of complexes. At pH=3, the ligand is singly-deprotonated and crystals of [Cr- (DAPSCH)(H2O)2](NO3)2·H2O (Ia) are obtained. Evaporation of a solution at pH=0, yields crystals of [Cr(DAPSC)(H2O)2](NO3)3·2H2O (II) in which the ligand is fully protonated. The reaction of DAPSC with UO2(O2CCH3)2 in methanol, followed by crystallization of the product from DMSO yields crystals of [UO2(DAPSC2H)(H2O)]·2DMSO (III) in which the ligand is fully deprotonated. Compound Ia is monoclinic, space group P21/n with a=11.746(1), b=14.752(2), c=11.866(1) Å,β=105.53(2)°, V= 1981(1) Å3 and Z=4. Compound II is monoclinic, space group, P21/n with a=38.000(3), b= 14.939(2), c=8.233(1) Å, β=96.12(2)°, V= 4647(1) Å and Z=8. Compound III is monoclinic, space group P21/n with a=18.048(2), b=15.207(2), c=8.842(1) Å,β=97.72(2)°, V=2405(1) Å3 and Z=4. The structures were refined using 2084, 4169 and 2516 reflections to R values of 4.4%, 7.8% and 4.8% respectively.

AB - The pentadentate ligand 2,6-diacetylpyridinedisemicarbazone, DAPSC, reacts with Cr(NO3)3·9H2O and forms two kinds of complexes. At pH=3, the ligand is singly-deprotonated and crystals of [Cr- (DAPSCH)(H2O)2](NO3)2·H2O (Ia) are obtained. Evaporation of a solution at pH=0, yields crystals of [Cr(DAPSC)(H2O)2](NO3)3·2H2O (II) in which the ligand is fully protonated. The reaction of DAPSC with UO2(O2CCH3)2 in methanol, followed by crystallization of the product from DMSO yields crystals of [UO2(DAPSC2H)(H2O)]·2DMSO (III) in which the ligand is fully deprotonated. Compound Ia is monoclinic, space group P21/n with a=11.746(1), b=14.752(2), c=11.866(1) Å,β=105.53(2)°, V= 1981(1) Å3 and Z=4. Compound II is monoclinic, space group, P21/n with a=38.000(3), b= 14.939(2), c=8.233(1) Å, β=96.12(2)°, V= 4647(1) Å and Z=8. Compound III is monoclinic, space group P21/n with a=18.048(2), b=15.207(2), c=8.842(1) Å,β=97.72(2)°, V=2405(1) Å3 and Z=4. The structures were refined using 2084, 4169 and 2516 reflections to R values of 4.4%, 7.8% and 4.8% respectively.

UR - https://www.scopus.com/pages/publications/0002599397

U2 - 10.1016/S0020-1693(00)88368-1

DO - 10.1016/S0020-1693(00)88368-1

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AN - SCOPUS:0002599397

SN - 0020-1693

VL - 127

SP - 95

EP - 101

JO - Inorganica Chimica Acta

JF - Inorganica Chimica Acta

IS - 1

ER -

Three coordination modes of the pentadentate ligand 2,6-diacetylpyridinedisemicarbazone

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