TY - JOUR
T1 - Preparation of a novel organic derivative of the layered perovskite bearing HLaNb2O7·nH2O interlayer surface trifluoroacetate groups
AU - Takeda, Yosuke
AU - Suzuki, Hiromi
AU - Notsu, Kazuya
AU - Sugimoto, Wataru
AU - Sugahara, Yoshiyuki
N1 - Funding Information:
The authors gratefully thank Prof. Kazuyuki Kuroda, Department of Applied Chemistry, Waseda University, for his valuable discussion. This work was financially supported in part by the Grant-in-Aid for Scientific Research (No. 14350462) from the Ministry of Education, Science, Sports, and Culture, Japan, and by 21COE “Practical Nano-Chemistry” from MEXT, Japan.
PY - 2006/4/13
Y1 - 2006/4/13
N2 - Trifluoroacetate (TFA, CF3COO) groups have been successfully bound to the interlayer surface of a protonated form of Dion-Jacobson-type layered perovskite, HLaNb2O7·nH2O (HLaNb), via a reaction between its n-propoxy derivative and trifluoroacetic acid (TFAH, CF3COOH). The interlayer distance increases approximately to 1.8 nm upon treatment with TFAH, and varies in the range from ∼1.7 to ∼2.0 nm depending on the amount of water adsorbed in the interlayer space. The high stability of the guest species upon dispersal in organic solvents and the change in the infrared (IR) spectrum profile with respect to that of TFAH indicate that the guest species are TFA groups bound to the surface of perovskite-like slabs of HLaNb. The interlayer distance indicates that the TFA groups possess a bilayer arrangement, and a unidentate type of coordination is proposed based on consideration on the coordination geometry.
AB - Trifluoroacetate (TFA, CF3COO) groups have been successfully bound to the interlayer surface of a protonated form of Dion-Jacobson-type layered perovskite, HLaNb2O7·nH2O (HLaNb), via a reaction between its n-propoxy derivative and trifluoroacetic acid (TFAH, CF3COOH). The interlayer distance increases approximately to 1.8 nm upon treatment with TFAH, and varies in the range from ∼1.7 to ∼2.0 nm depending on the amount of water adsorbed in the interlayer space. The high stability of the guest species upon dispersal in organic solvents and the change in the infrared (IR) spectrum profile with respect to that of TFAH indicate that the guest species are TFA groups bound to the surface of perovskite-like slabs of HLaNb. The interlayer distance indicates that the TFA groups possess a bilayer arrangement, and a unidentate type of coordination is proposed based on consideration on the coordination geometry.
KW - A. Layered compound
KW - B. Chemical synthesis
KW - C. Nuclear magnetic resonance
KW - C. X-ray diffraction
KW - D. Surface properties
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U2 - 10.1016/j.materresbull.2005.10.004
DO - 10.1016/j.materresbull.2005.10.004
M3 - Article
AN - SCOPUS:33644772453
VL - 41
SP - 834
EP - 841
JO - Materials Research Bulletin
JF - Materials Research Bulletin
SN - 0025-5408
IS - 4
ER -