Hydrogen bonding and anion binding in structures of tris(pyrazolyl)boratenickel(II) and phosphate esters

作者：Dolores Santana M; Lopez Banet Luisa; Garcia Gabriel; Garcia Luis; Perez Jose; Liu Malva

来源：European Journal of Inorganic Chemistry, 2008, 2008(25): 4012-4018.

DOI：10.1002/ejic.200800345

• hydrogen bonds
• nickel
• NMR spectroscopy
• receptors
• solid-state structures
• phosphates

This paper presents the syntheses, crystal structures and spectroscopic properties of a series of nickel(II) complexes containing hydrotris(3,5-dimethylpyrazolyl)borate and phosphate esters: [Tp*Ni(Hpz*)(2)(L)][(RO)(2)PO(2)] [R = Et, BU; L = H(2)O (1), (BuO)(2)P(O)OH(2)] and [Tp*Ni(Hpz*)(H(2)O)(2)][(EtO)(2)-PO(2)] (5) [Tp * = hydrotris(3,5-dimethylpyrazolyl)borate, Hpz* = 3,5-dimethylpyrazole). The complexes [Ni(Tp*)(2)] (3) and [(Tp*Ni)2(mu-PZ*)(mu-OH)](4) were also prepared and fully characterized. X-ray crystallographic studies of I and 2 reveal that the pyrazole moieties are hydrogen bonded to the guest phosphate ester anion. In complex 5, the phosphate anion is hydrogen-bonded by two O-H groups of the water molecules. Their behavior in solution was investigated by ID and 2D (1)H NMR spectroscopic techniques.

• 出版日期2008-9