Hydrothermal Syntheses, Crystal Structure and Thermal Behavior of [(CH3)2NH2]2[B5O6(OH)4]2•[HCON(CH3)2] and [NH3CH2CH2NH3]2[B14O20(OH)6]

Two novel organic base ternplated nonmetal borates [(CH3)(2)NH2](2)[B5O6(OH)(4)](2)center dot[HCON(CH3)(2)] (I) and [NH3CH2CH2NH3](2)[B14O20(OH)(6)] (II) have been synthesized under hydrothermal conditions. and characterized by elemental analyses. FT-IR spectroscopy, X-ray diffraction. and TG-DTA Their crystal Structures were determined from single crystal X-ray diffraction The crystal structure of compound I is characterized by forming it 3D supramolecular structure with large channels along axes b and c through O-H center dot center dot center dot O hydrogen-bonding among the [B5O6(OH)(4)](-) anions. The crystal structure of compound II is characterized by forming a 3D supramolecular structure with large channels along axis a and direction [111] through O-H center dot center dot center dot O hydrogen-bonding among the [B14O20(OH)(6)](4-) anions. The templating organic amine cations in I and II are both obtained through in situ hydrogen thermal reactions, and are both located in the channels of the 3D supramolecular structure, respectively. Their thermal behavior has been also investigated