Poly[[diaquacaesium(I)]bis(μ₃-3-carboxypyrazine-2-carboxylato)]

Abstract

Key indicators: single-crystal X-ray study; T = 296 K; mean (C-C) = 0.003 Å; R factor = 0.019; wR factor = 0.052; data-to-parameter ratio = 14.4.The asymmetric unit of the title compound, [Cs(C 6 H 3 N 2 O 4 ) 2 (H 2 O) 2 ] n , contains one Cs I cation on an inversion centre, one 3-carboxypyrazine-2-carboxylate anion and one water molecule. In the crystal structure, each anion is linked to three cations, while each cation is surrounded by six of the anions. In addition, each cation is coordinated by two water O atoms, raising the coordination number to ten. In the crystal structure, intermolecular O-HÁ Á ÁO and O-HÁ Á ÁN hydrogen bonds contribute to the stabilization of the structure. ] M r = 503.15 Triclinic, P1 a = 7.4801 (9) Å b = 7.6352 (9) Å c = 8.6505 (11) Å = 70.031 (9) = 81.126 (10) = 66.128 (9) V = 424.55 (10) Å 3 Z = 1 Mo K radiation = 2.24 mm À1 T = 296 K 0.52 Â 0.47 Â 0.42 mm Data collection Stoe IPDSII diffractometer Absorption correction: integration (X-RED32; Stoe & Cie, 2002) T min = 0.382, T max = 0.471 7683 measured reflections 1968 independent reflections 1949 reflections with I > 2(I) R int = 0.057

Poly[triaquabis(μ2-3-carboxypyrazine-2-carboxylato)dilithium(I)]

“…For related literature, see: Chen et al (2007); Clark & Reid (1995); Erxleben (2003); Fei, Ang et al (2006); ; Gao et al (2005); Ló pez Garzó n et al 2003; Grossie et al (2006); Haiduc & Edelmann (1999); Janiak (2003); Kim et al (2007); Kitagawa et al (2004); Lehn (1995); Mueller et al (2006); Nepveu et al (1993); Pancholi & Patel (1996); Ptasiewicz-Bak & Leciejewicz (1997a,b); Richard et al (1973); Speakman (1972); Sreenivasulu & Vittal (2004); Starosta & Leciejewicz (2005); Takusagawa & Shimada (1973); Tombul et al (2006Tombul et al ( , 2007Tombul et al ( , 2008; Ye et al (2005). Table 1 Selected geometric parameters (Å , ).…”

“…In recent years, a variety of metal-organic compound of pyrazine-2,3-dicarboxylic acid have been characterized crystallographically due to growing interest in supramolecular chemistry. Examples are including the calcium (Ptasiewicz-Bak & Leciejewicz, 1997a;Starosta & Leciejewicz, 2005), magnesium (Ptasiewicz-Bak & Leciejewicz, 1997b), sodium (Tombul et al 2006), caesium (Tombul et al 2007) and potassium (Tombul et al 2008) complexes. Continuation our research on Group I dicarboxylates, we present here the synthesis and crystal structure of the hydrated polymeric dinuclear lithium complex, (I), formed with pyrazine-2,3-dicarboxylic acid.…”

Structures of CoIIand ZnIIcomplexes of the proton-transfer compound derived from pyrazine-2,3-dicarboxylic acid and piperazine

“…Crystal structures of transition metal complexes include those of manganese (Wang & Wang, 2009), copper (Mirzaei et al, 2012), zinc (Gunay et al, 2013), iron (Xu et al, 2008), silver (Alisir et al, 2013) and cadmium (Gunay et al, 2011), as well as mixed-metal species (Sun et al, 2012). In addition, those of f-block and group 1 and 2 cations have been characterized crystallographically (Zou et al, 1999;Konar et al, 2004;Tombul et al, 2007;Ptasiewicz-Bak & Leciejewicz, 1997). At least 16 Zn II coordination polymers with the pydzc 2À ligand are known, for example, [Zn(pydzc)-(H 2 O) 2 ]ÁH 2 O (Richard et al, 1974), [Zn(pydzc)(H 2 O) 3 ]ÁH 2 O (Ptasiewicz-Bak & Leciejewicz, 1999), [Zn 2 (pydzc) 2 (H 2 O) 4 ]Á-2.5H 2 O (Lin et al, 2009), (H 3 O) 2 [Zn(pydzc) 2 ] (Gryz et al, 2005) and {(pipzH 2 )[Zn(pyzdc) 2 ]Á6H 2 O} n (Eshtiagh-Hosseini, Aghabozorg et al, 2011).…”

Crystal structure of caesium(I) hydrogen maleate, Cs(C4H3O4)

“…Although most of the studies conducted in this area is primarily focused on coordination polymers containing transition metals as connectors, such as Zn, Ni and Co [3,4], there is little attention on the Group Imetal [5,6]. As part of ongoing studies on Group Idicarboxylates [7][8][9], we present here the caesium complex formed with maleic acid. The asymmetric unit of the title compound contains one caesium cation, one hydrogen maleate anion.…”