Synthesis, Crystal Structure and Thermal Behavior of Co(en)₃[B₄O₅(OH)₄]Cl·3H₂O and [Ni(en)₃][B₅O₆(OH)₄]₂·2H₂O

Abstract

Two novel transition-metal complex templated borates containing crystalline water, Co(en) 3

Two 1-D Coordination Polymers Containing Zinc(II) Hexaborates: [Zn(en){B6O7(OH)6}]·2H2O (en = 1,2-diaminoethane) and [Zn(pn){B6O7(OH)6}]·1.5H2O (pn = 1,2-diaminopropane)

“…Thermal decomposition data for 1 and 2 were also in agreement with multistep processes involving initial loss of interstitial H2O, then condensation of hexaborate(2−) ligands with loss of more H2O, and finally oxidation of the organic ligands. Similar decomposition processes were observed for other polyborate compounds containing transition-metal complexes [29][30][31]. Compounds 1 and 2 were soluble in H2O, but dissolution led to their decomposition with 1 H and 13 C spectra consistent with diamine ligands, and 11 B spectra of 1 and 2 both showing only one peak of approximately −16 ppm.…”

Pentaborate(1-) Salts and a Tetraborate(2-) Salt Derived from C2- or C3-Linked Bis(alkylammonium) Dications: Synthesis, Characterization, and Structural (XRD) Studies

“…[28]. The B-O bond lengths, OBO and BOB angles observed for the [B 4 O 5 (OH) 4 ] 2− and B(OH) 3 motifs are in accord with previous tetraborate(2-)[47][48][49][50][51][52][53][54][55][56] and polyborates with co-crystallized B(OH)3 [32,33,39,55,57,58]; for full details see the Supplementary Information.…”

“…Using Etter nomenclature [46] the H-bond interactions per pentaborate are 3 R2 2 (8) and 1 R2 2 (12) for 2, and 3 R2 2 (8) and 1 C(8) for 3, 7, and 8. Compound 7 adopts the familiar ′herringbone′ structure [29,31] The structural characterization of 9 is considered in more detail in this manuscript since it contains a tetraborate(2-) anion and there are far fewer crystallographic reports in the literature featuring this anion; the anion is found partnered with 2Na + in the well-known borax [47,48] but is less commonly found with non-metal cation [40,[49][50][51][52] or transition metal cation salts [53][54][55][56].…”

Recent advances in crystalline hydrated borates with non-metal or transition-metal complex cations

“…The majority of compounds described in this review have been prepared in aqueous solution by simply mixing reactants [10,[16][17][18][19]25,27,31,[39][40][41][43][44][45]48,50,52,54,56,59,62,75,87,93,95,96,100] or by use of hydrothermal [20,22,26,28,30,32,34,37,47,53,57,[63][64][65][70][71][72]79,82,84,102,115] or solvothermal [35,3...…”