Bis(tripyrazol-1-ylmethane)nickel(II) tetracyanidonickelate(II) dihydrate

Abstract

The title complex, [Ni(C10H10N6)2][Ni(CN)4]·2H2O, contains an octa­hedral nickel(II) cation and a square-planar nickel(II) anion. Both the cation and the anion reside on a crystallographic center of inversion. The NiII center in the cation is coordinated by six pyrazol-1-yl rings of two chelating tripyrazol-1-ylmethane [HC(pz)3] ligands, with Ni—N distances that range between 2.0647 (19) and 2.0828 (19) Å. The NiII center in the anion is coordinated by four cyanide ligands, with Ni—C distances in the range 1.869 (2)–1.869 (3) Å. The [Ni(CN)4]2− anions are linked by inversion-related water mol­ecules into extended chains that run parallel to the a axis.

Zinc Therapy in Early Alzheimer’s Disease: Safety and Potential Therapeutic Efficacy

“…This evidence may be due to nutritional zinc deficiencies and/or deficiency in the expression/activities of zinc regulatory proteins [ 38 ]. Some investigations in the brain of AD patients demonstrated that they differed from healthy elderly controls in terms of the expression of zinc regulatory proteins [ 39 , 40 ].…”

Synthesis, Characterization and Crystal Structure of Bis[1-methoxy-2,2,2-tris-(pyrazol-1-yl-κN2)ethane]-copper(II) Bis-perchlorate

“…Pyrazole based tridentate ligands often bind metals in a scorpionate fashion and produce significant Corresponding author: Ganna Lyubartseva, Ph.D., assistant professor of chemistry, main research field: coordination chemistry. coordination chemistry research initiatives [8][9][10][11][12][13][14][15][16]. In this article, the authors are reporting synthesis, characterization and crystal structure of bis[1-methoxy-2,2,2-tris-(pyrazol-1-yl-κN 2 )ethane]-co pper(II) bis-perchlorate as part of their ongoing research efforts in this field.…”

Synthesis, Characterization and Crystal Structure of Bis[1-methoxy-2,2,2-tris-(pyrazol-1-yl-κN2) ethane]-cobalt (II) bis-perchlorate

“…Derivatives of pyrazoles have been studied extensively for useful biological effectiveness due to their antiinflammatory, anti-diabetic, anesthetic and analgesic properties (Sarojini et al, 2010;Padhy et al, 2017). In addition, structurally, pyrazole based tridentate ligands have a tendency to bind transition metals in a scorpionate fashion which produces significant number of novel coordination compounds (Lyubartseva & Parkin, 2009;Lyubartseva & Parkin, 2010a;Lyubartseva & Parkin, 2010b;Lyubartseva et al, 2011;Lyubartseva et al, 2013a;Lyubartseva et al, 2013b;Lyubartseva et al, 2014;Lyubartseva et al, 2016).…”