TY - JOUR
T1 - K2[Ge(B4O9)]·2H2O
T2 - A unique 3D alternating linkage mode of a B4O9 cluster and GeO4 unit in borogermanate with two pairs of interweaving double helical channels
AU - Zhang, Hong Xia
AU - Zhang, Jie
AU - Zheng, Shou Tian
AU - Wang, Guo Ming
AU - Yang, Guo Yu
PY - 2004/10/4
Y1 - 2004/10/4
N2 - The first noncentrosymmetric potassium templated borogermanate, K 2[Ge(B4O9)]·2H2O, has been solvothermally synthesized and characterized by IR, SEM, powder X-ray diffraction (PXRD), TGA, energy dispersive spectroscopy (EDS), single crystal X-ray diffraction, and second harmonic generation (SHG) activity, respectively. This compound crystallized in the monoclinic space group Cc with a = 6.793(1) Å, b = 12.0699(3) Å, c = 11.895(3) Å, β = 91.156(4)°, V = 975.1(4) Å3, and Z = 4. Interestingly, the structure possesses a unique 3D alternating linkage mode of B4O9 clusters and GeO4 units and contains two pairs of interweaving double helical channels with a 10-membered ring. In one, the right- and left-handed helices couple each other, and in the other, the left- and right-handed helices couple together. The compound exhibits distinct nonlinear optical (NLO) properties because it lacks a symmetric center. Furthermore, the framework of the title compound not only displays high thermal stability but also can be recoverable to a large degree during a dehydration-hydration cycle.
AB - The first noncentrosymmetric potassium templated borogermanate, K 2[Ge(B4O9)]·2H2O, has been solvothermally synthesized and characterized by IR, SEM, powder X-ray diffraction (PXRD), TGA, energy dispersive spectroscopy (EDS), single crystal X-ray diffraction, and second harmonic generation (SHG) activity, respectively. This compound crystallized in the monoclinic space group Cc with a = 6.793(1) Å, b = 12.0699(3) Å, c = 11.895(3) Å, β = 91.156(4)°, V = 975.1(4) Å3, and Z = 4. Interestingly, the structure possesses a unique 3D alternating linkage mode of B4O9 clusters and GeO4 units and contains two pairs of interweaving double helical channels with a 10-membered ring. In one, the right- and left-handed helices couple each other, and in the other, the left- and right-handed helices couple together. The compound exhibits distinct nonlinear optical (NLO) properties because it lacks a symmetric center. Furthermore, the framework of the title compound not only displays high thermal stability but also can be recoverable to a large degree during a dehydration-hydration cycle.
UR - http://www.scopus.com/inward/record.url?scp=4644256145&partnerID=8YFLogxK
U2 - 10.1021/ic049071f
DO - 10.1021/ic049071f
M3 - Article
AN - SCOPUS:4644256145
SN - 0020-1669
VL - 43
SP - 6148
EP - 6150
JO - Inorganic Chemistry
JF - Inorganic Chemistry
IS - 20
ER -