Dipotassium zinc bis(dihydrogendiphosphate) dihydrate, K₂Zn(H₂P₂O₇)₂·2H₂O

Abstract

Key indicatorsSingle-crystal X-ray study T = 292 K Mean '(P±O) = 0.004 A Ê R factor = 0.056 wR factor = 0.093 Data-to-parameter ratio = 18.9For details of how these key indicators were automatically derived from the article, see

Two new acidic diphosphates Rb2M(H2P2O7)2·2H2O (M = Zn and Mg): Crystal structures and vibrational study

“…The Mn term of this series has been reported by Capitelli et al [17]. We also published four compounds in the series K 2 M(H 2 P 2 O 7 ) 2 ·2H 2 O with M = Mn [18], Co [19], Zn [20] and Ni [21]. According to our structural results, there are two classes of such compounds: the triclinic group (P1) containing the diphosphates with Ni [21] and Mg [23], and orthorhombic group (Pnma) for those with Mn [18], Co [19], and Cu, Ni and Zn [22].…”

“…Single crystals of Rb2M(H2P2O7)2·2H2O, M = Zn (I) and Mg (II), have been prepared according to the method elsewhere reported in some of our previous works [14][15][16][17][18][19][20][21][22]28]. In the present study, we dissolved stoichiometric amounts of Rb2CO3 (1 mmol, 0.2277 g) and MCl2·6H2O Index ranges …”

“…We also published four compounds in the series K 2 M(H 2 P 2 O 7 ) 2 ·2H 2 O with M = Mn [18], Co [19], Zn [20] and Ni [21]. According to our structural results, there are two classes of such compounds: the triclinic group (P1) containing the diphosphates with Ni [21] and Mg [23], and orthorhombic group (Pnma) for those with Mn [18], Co [19], and Cu, Ni and Zn [22]. Numerous other mixed hydrogen-and dihydrogen-diphosphates have been reported in the literature during the last few years ( [24] and references herein) and many aspects, related to the synthesis methods and physico-chemical properties of diphosphates have been intensively investigated [25][26][27].…”

First-Principles Calculations of the Structural, Electronic, Optical, and Mechanical Properties of 21 Pyrophosphate Crystals

“…Of special interest are the crystals: K 2 M (H 2 P 2 O 7 )•2H 2 O and (NH 4 ) 2 M(H 2 P 2 O 7 )•2H 2 O where (M = Mg, Zn, Cu, Ni, Co, and Mn). These materials are polymorphic structures with three different space groups, namely triclinic P-1, orthorhombic Pnma, and monoclinic P2/m [13,[24][25][26][27][28][29][30][31][32].…”