Preparation of Water-Soluble Zinc(II) Complexes with Ethylenediaminetetraacetic Acid: Molecular Structure of Zinc Ethylenediaminetetraacetate Trihydrate

Author:

Semenov V. V.1,Zolotareva N. V.1,Novikova O. V.1,Petrov B. I.1,Lazarev N. M.1,Rumyantsev R. V.1,Lopatin M. A.1,Lopatina T. I.1,Kovylina T. A.1,Razov E. N.23

Affiliation:

1. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, Nizhny Novgorod, Russia

2. Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod, Russia

3. Institute of Problems of Mechanical Engineering, Russian Academy of Sciences—A Branch of the Federal Research Center, Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod, Russia

Abstract

Poorly soluble zinc ethylenediaminetetraacetate zincate Zn[ZnL] reacts with sodium Na4L, potassium K4L, ammonium (NH4)4L, 2-ammonioethanol (H3NCH2CH2OH)4L, and hexamethylene-1,6-diammonium {H3N(CH2)6NH3}2L salts of ethylenediaminetetraacetic acid H4L to give readily soluble sodium Na2[ZnL], potassium K2[ZnL], ammonium (NH4)2[ZnL], 2-ammonioethanol (H3NCH2CH2OH)2[ZnL], and hexamethylene-1,6-diammonium {H3N(CH2)6NH3}[ZnL] ethylenediaminetetraacetate zincates. The reaction of tetrakis(triethylammonium) salt {(C2H5)3NH}4L with Zn[ZnL] does not give the expected bis(triethylammonium) ethylenediaminetetraacetate zincate {(C2H5)3NH}2[ZnL], but gives instead mono(triethylammonium) ethylenediaminetetraacetate zincate, {(C2H5)3NH}H[ZnL]; in aqueous solution, this product generates poorly soluble zinc ethylenediaminetetraacetate H2[ZnL(H2O)]·2H2O, which was studied by X-ray diffraction (CCDC no. 2172274).

Publisher

The Russian Academy of Sciences

Reference16 articles.

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