(C6H17N3)[Zn4(PO4)2(HPO3)2]: a new layered zinc phosphate–phosphite templated by 1-(2-Aminoethyl) piperazine

Organically templated open-framework phosphites

“…A third, novel layered structure containing a 4.6.8-net, reminiscent of that found in a series of aluminosilicates with Al 3 P 4 O 16 3À stoichiometry but never seen before in either phosphates or phosphites, is observed in (C 6 N 2 H 16 )Zn 3 (HPO 3 )$H 2 O, 70 shows a new double-layer structure with each layer made of a 3.9-network of strictly alternating ZnO 4 and P-centred units. 72 A double-layer structure is also found in (C 3 N 2 H 5 ) [Zn 2 (HPO 3 ) 2 (H 2 PO 3 )] and (C 4 N 2 H 7 ) 2 [Zn 2 (HPO 3 ) 3 ] $2H 2 O, 73 in which, in contrast to what is usually observed in other zincophosphates and -phosphites, imidazole and 2-methylimidazole molecules do not link to the metal centres but act purely as templating agents. The pattern of the inorganic anionic sheets is very similar for both compounds with a somewhat different connectivity leading in both cases to a 4.8.12-net.…”

Flux synthesis of two new open-framework zinc phosphites with 16-ring channels

“…All the P atoms in compound 1 make three P-O-Zn connections with adjacent Zn atoms, whereas in FJ-11, the P atoms can share two, three, or four oxygen atoms with their adjacent Zn atoms. Another open-framework structure templated by diprotonated aep cations in metal phosphite system is (C 6 H 17 N 3 )[Zn 4 (PO 4 ) 2 (HPO 3 ) 2 ], which was synthesized by the reaction of Zn(OAc) 2 Á2H 2 O, H 3 PO 3 and aep under hydrothermal conditions [45]. Different from the pure phosphite framework of compound 1, this compound contains PO 4 and HPO 3 units in its layered structure.…”

Bazı karboksilik asitlerden elde edilen proton transfer tuzlarının ve Cu (II) komplekslerinin sentezi ve karakterizasyonu

“…Yapılan araştırmalar piperazin ve türevlerini kullanarak çok sayıda proton transfer tuzu ve bunların metal komplekslerinin sentezlendiğini göstermiştir. Bu çalışmalarda piperazin ve türevlerinin kristal yapıya H-bağı ile bağlandığı, protonlanmış piperazin ve türevlerinin yük denkliğini sağlayan tamamlayıcı katyon olarak yer aldığı görülmektedir [25][26][27][28]. Yapılan çalışmalar, piperazin içeren bileşiklerin antimikrobiyal aktifliği arttırdığını ve antioksidan özelliği ile insan vücudunun savunma sistemini güçlendirdiğini göstermiştir [29].…”