Crystal structure of tin(II) maleate monohydrate

Cadmium(II) maleate dihydrate (Cc form)

“…This asymmetry is similar to that in PT [angles in maleate ion (1): 18 and 84°; in maleate ion (2): 16 and 67 °] and in tin(II) maleate monohydrate (Dewan, Silver, Andrews, Donaldson & Laughlin, 1977) where the corresponding angles are 4 and 88 °, but in contrast to that in copper(II) maleate hydrate (Prout, Carruthers & Rossotti, 1971)in which both angles are 46 ° . Since it was not possible to locate the H atoms in the crystal, there is some doubt about the hydrogen bonding.…”

Acentric and Centric Interpenetrations of an Anionic Framework Mediated by Cation Sizes: The Alkali-Metal Tin(II) Benzenedicarboxylates A2Sn2(bdc)3(H2O)x (A = Li, Na, K, Rb, Cs)

“…12 A similar terminating role may also be played by electron lone pairs of metal cations such as Sn 2þ which tend to have an asymmetric "one-sided" coordination environment. [13][14][15] Very few structures of divalent tin benzenedicarboxylates are known despite the fact that some organotin polycarboxylates have found wide applications in biology and catalysis. [16][17][18] We have synthesized a series of alkali-metal tin benzenedicarboxylates A 2 Sn 2 (bdc) 3 (H 2 O) x , A = Li, Na, K, Rb, Cs, in single crystal forms by using a hydrothermal technique.…”

Structure of pyridinium catena-μ-chloro-chloro(3,4,5,6-tetrachloropyrocatecholato)antimonate(III)

“…Such lengthening of bonds (Table 3) is a common feature in both Sb-O and Sb-C1 compounds in which the Sb coordination is greater than three. Similar effects have been noted in the structural chemistry of Sn n, which is isoelectronic with Sb m. In Sn H an increase in the metal coordination from the usual trigonal-bipyramidal environment only occurs if at least one of the three short bonds is lengthened (Dewan, Silver, Andrews, Donaldson & Laughlin, 1977;Donaldson, Donoghue & Smith, 1976). In Sn n structures this often leads to four-coordinated environ- …”