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minglianggao

Òø³æ (ÕýʽдÊÖ)

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waiy2001(½ð±Ò+5,VIP+0):лл֧³Ö°æÖ÷»î¶¯
¡¾Ñ§¿ÆÁìÓò¡¿ÅäÌ峡ÀíÂÛÑо¿
¡¾ÎÄÏ×ÌâÄ¿¡¿The correlation between zero-field splitting and site
distortions of Mn2+ ions in CsCl:Cr3+ system: a complete energy matrices study
¡¾ÆÚ¿¯À´Ô´¡¿J.Phys.Chem.B
¡¾×÷Õß»ò¿ÎÌâ×é¡¿Lu C, Kuang X Y, Tan X M, Yang X
¡¾·¢±íʱ¼ä¡¿2008
¡¾ÄÚÈݼò½é¡¿A theoretical method for investigating the inter-relation between the electronic and molecular structures of  Mn2+ configuration ions in a tetragonal ligand field
¡¾Ìå»á&ÊÕ»ñ¡¿³ä·ÖÀí½âÁËÅäλ³¡ÀíÂÛµÄʵÖÊ£¬ÕÆÎÕÁ˾§Ì峡»ù±¾ÖªÊ¶£¬ÊÕ»ñºÜ¶à....
Ԥף×Ô¼º²©ºó»ù½ðÄܹ»Ë³ÀûÄõ½1µÈ×ÊÖú¡£¹ú¼Ò»ù½ðÃæÉÏÏîÄ¿ºÍÊ¡»ù½ðÃæÉ϶¼ÄÜÖУ¡£¡£¡
11Â¥2009-01-02 22:15:31
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wsujlu378

¡ï ¡ï ¡ï ¡ï ¡ï
waiy2001(½ð±Ò+5,VIP+0):лл֧³Ö°æÖ÷»î¶¯
¡¾Ñ§¿ÆÁìÓò¡¿MOFs and nanocrystal
¡¾ÎÄÏ×ÌâÄ¿¡¿Facile synthesis of nanocrystals of a microporous metal¨Corganic
framework by an ultrasonic method and selective sensing
of organoamines
¡¾ÆÚ¿¯À´Ô´¡¿ChemComm
¡¾×÷Õß»ò¿ÎÌâ×é¡¿Ling-Guang Qiu,* Zong-Qun Li, Yun Wu,
¡¾·¢±íʱ¼ä¡¿2008
¡¾ÄÚÈݼò½é¡¿In this work we present the rapid synthesis of nanocrystals of a fluorescent microporous metal-organic framework using an ultrasonic
method, and their utility for selective sensing of organoamines.
¡¾Ìå»á&ÊÕ»ñ¡¿ÓŵãÊÇΪ¿ìËÙ¸ßЧºÏ³ÉÄÉÃ×¾§ÌṩÁËÒ»¸öÐµķ½·¨£¬È±µãÊÇÎÞ·¨¶¨ÏòºÏ³ÉÄÉÃ×¾§¡£Ö»ÄÜÊÇÏÈ»ñµÃÄÉÃ×¾§£¬ÔÙͨ¹ý½á¹¹Êý¾ÝÕÒÎÄÏ×ѰÕÒÊÇʲô¾§Ìå¡£ÊÇÖÖз½·¨£¬µ«ÊDz»¾ß±¸¸üΪ¹ã·ºµÄÒâ˼¡£²»¹ýÎÒ˵µÄÆäʵÏÖÔÚ»ù±¾Ã»ÓÐ×öµ½µÄ
12Â¥2009-01-03 12:20:02
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gold1987

ľ³æ (Ö°Òµ×÷¼Ò)

¡ï ¡ï ¡ï ¡ï ¡ï
lingzi326(½ð±Ò+5,VIP+0):·Ç³£¸Ðл~~~
¡¾Ñ§¿ÆÁìÓò¡¿¾§ÌåÉú³¤
¡¾ÎÄÏ×ÌâÄ¿¡¿A hybrid green light-emitting diode comprised of n-ZnO/(InGaN/GaN) multi-quantum-wells/p-GaN
¡¾ÆÚ¿¯À´Ô´¡¿Appl. Phys. Lett
¡¾×÷Õß»ò¿ÎÌâ×é¡¿C. Bayram,1 F. Hosseini Teherani,2 D. J. Rogers,2 and M. Razeghi1
1Center for Quantum Devices, Department of Electrical Engineering and Computer Science, Northwestern University, Evanston, Illinois 60208, USA
2Nanovation SARL, 103 bis Rue de Versailles, Orsay 91400, France

¡¾·¢±íʱ¼ä¡¿2008
¡¾ÄÚÈݼò½é¡¿Hybrid green light-emitting diodes (LEDs) comprised of n-ZnO/(InGaN/GaN) multi-quantum-wells/p-GaN were grown on semi-insulating AlN/sapphire using pulsed laser deposition for the n-ZnO and metal organic chemical vapor deposition for the other layers.
¡¾Ìå»á&ÊÕ»ñ¡¿ÌṩÁËÒ»ÖÖÐÂÐ͸ßЧµª»¯ïØ·¢¹â¶þ¼«¹ÜµÄÖÆ×÷·½·¨¡£
13Â¥2009-01-05 15:48:27
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qingshaojun0823

ÈÙÓþ°æÖ÷ (ÎÄ̳¾«Ó¢)

LOVE

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14Â¥2009-01-10 10:38:23
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haru007

ľ³æ (ÖøÃûдÊÖ)

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warlen(½ð±Ò+5,VIP+0):лл֧³Ö¾§Ìå»î¶¯£¬¾§ÌåÒòÄã¶ø¾«²Ê£¡
¡¾Ñ§¿ÆÁìÓò¡¿ÎÞ»ú»¯Ñ§----Ï¡ÍÁ
¡¾ÎÄÏ×ÌâÄ¿¡¿Novel Luminescent Lanthanide(III) Diphosphonates with Rarely
Observed Topology
¡¾ÆÚ¿¯À´Ô´¡¿Crystal Growth & Design,
¡¾×÷Õß»ò¿ÎÌâ×é¡¿Jiang-Gao Mao
¡¾·¢±íʱ¼ä¡¿2007£¬VOL.7,NO.2£¬360-366
¡¾ÄÚÈݼò½é¡¿Hydrothermal reactions of lanthanide(III) salts with N-(2-pyridyl)-aminomethane-1,1-diphosphonic acid (H4L) led
to five new lanthanide(III) phosphonates, namely, La4(H2L)4(H3L)4(H2O)4¨¢20H2O (1) and Ln(H2L)(H3L)¨¢4H2O (Ln ) Eu (2), Gd
(3), Dy (4), and Er (5)). Compound 1 features a 3D framework with rarely observed topology in which each lanthanum(III) ion is
eight-coordinated by seven phosphonic oxygen atoms from four phosphonate ligands and an aqua ligand. It possesses two types of
tunnels running parallel to the a-axis, one formed by five La(III) ions and five organic moieties, the other by seven La(III) ions and
seven organic moieties. It shows noninterpenetrated three-connected topology.
¡¾Ìå»á&ÊÕ»ñ¡¿ÂÛÎÄÖеÄÍØÆË½á¹¹ÖµµÃѧϰ
15Â¥2009-01-11 13:23:44
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pcyxgc8012

½ð³æ (ÕýʽдÊÖ)

°¢ÒÁ´ï

MOF

¡ï ¡ï ¡ï ¡ï ¡ï
waiy2001(½ð±Ò+5,VIP+0):лл֧³Ö»î¶¯ 2-12 18:43
ÎÒ¾õµÃÊǺÜÓмÛÖµµÄÎÄÕ£¬Ï£Íû¶Ô´ó¼ÒÓÐÓÃ
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16Â¥2009-02-12 15:33:34
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pcyxgc8012

½ð³æ (ÕýʽдÊÖ)

°¢ÒÁ´ï

waiy2001(½ð±Ò+0,VIP+0):Äã¿ÉÒÔÓÃÄÉÃ×ÅÌÉÏ´«Ñ½ 2-12 18:42
Ϊʲô´óÓÚ512KµÄ²»ÄÜÉÏ´«°¡£¬ÎÒµÄһЩºÃÎÄÏ×¶¼ÊÇ1M×óÓҵİ¡
ÑÛÉñÀï¿Ì¼¹ýÍù£¬²»»áÈö»Ñ
17Â¥2009-02-12 15:34:48
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brilliant

¾èÖú¹ó±ö (Ö°Òµ×÷¼Ò)

¡ï ¡ï ¡ï ¡ï ¡ï
waiy2001(½ð±Ò+5,VIP+0):лл֧³Ö»î¶¯ 2-12 18:43
¡¾Ñ§¿ÆÁìÓò¡¿ÎÞ»ú»¯Ñ§-ÊÖÐÔ¾§Ì壨¹Ç¼Ü£©ÖƱ¸
¡¾ÎÄÏ×ÌâÄ¿¡¿Cooperative Self-Assembly of Chiral L-Malate and Achiral Succinate in
the Formation of a Three-Dimensional Homochiral Framework
¡¾ÆÚ¿¯À´Ô´¡¿Inorg. Chem. 2008, 47, 8607-8609
¡¾×÷Õß»ò¿ÎÌâ×é¡¿Areg Zingiryan, Jian Zhang, and Xianhui Bu*
¡¾·¢±íʱ¼ä¡¿2008
¡¾ÄÚÈݼò½é¡¿Chiral L-malate and achiral succinate ligands have been integrated

into a three-dimensional homochiral framework by reacting transition-
metal cations (Mn2+), L-(-)-malic acid (L-H2ma), succinic acid
(H2suc), and 4,4¡ä-bipyridine (4,4¡ä-bipy). Chiral L-malate bonds to
Mn2+ without using the -OH group, which is very unusual for
malate. Such unusual bonding of chiral malate results from the
cooperative effect of chiral malate and achiral succinate ligands
during the self-assembly process, further assisted by the third
complementary bipyridine ligand.
¡¾Ìå»á&ÊÕ»ñ¡¿ÀûÓÃÓлúÊÖÐÔ·Ö×Ó×Ô×é×°ÖÆ±¸ÊÖÐÔ¹ÌÌå²ÄÁÏ
Á´½Ó£ºhttp://www.namipan.com/d/12f5c09 ... 1539e70481b61a81700

[ Last edited by brilliant on 2009-2-12 at 16:59 ]
18Â¥2009-02-12 16:58:16
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songxuemin

ľ³æ (ÖøÃûдÊÖ)

¡ï ¡ï ¡ï ¡ï ¡ï
waiy2001(½ð±Ò+5,VIP+0): 2-13 13:42
¡¾Ñ§¿ÆÁìÓò¡¿¾§Ì弯Ëã

¡¾ÎÄÏ×ÌâÄ¿¡¿Effect of temperature on the local angular thermal expansion and local structure for nickel-doped zinc fluosilicate

¡¾ÆÚ¿¯À´Ô´¡¿Chemical Physics Letters  Volume 467, Issues 1-3, 15 December 2008, Pages 170-175

¡¾×÷Õß»ò¿ÎÌâ×é¡¿Kuang Xiao-Yu

¡¾·¢±íʱ¼ä¡¿2008Äê10ÔÂ

¡¾ÄÚÈݼò½é¡¿Previously published electron paramagnetic resonance (EPR) data for Ni2+(3d7) in hydrated and deuterated crystals of zinc and nickel fluosilicate have been re-analyzed to separate the static and dynamic contributions to the fine-structure (or axial zero-field-splitting) term D in the spin-Hamiltonian. While the Debye parameters of ZnSiF6¡¤6H2O and ZnSiF6¡¤6D2O were determined in an earlier low-temperature study1, those of the undiluted nickel crystals, for which good data between 4 and 77 K is lacking, have been estimated here by comparison of the data above 60 K with those for the corresponding zinc compounds. The numerical results indicate that the measured values of D are composed of a negative dynamical contribution produced by the rotational motions of the water ligands, together with both negative and positive static contributions produced by the water ligands, and the more distant [SiF6]2− and [Ni.6H2O]2+ complexes, respectively. A point-charge calculation shows the contribution of the latter to be roughly +2.5 cm−1 in NiSiF6¡¤6H2O. The exceptionally large temperature variations of D in these crystals is attributed to the near-cancellation of the positive and negative static contributions, leaving the effect of the dynamical contribution dominant.


¡¾Ìå»á&ÊÕ»ñ¡¿·ÖÎö²¿·Ö±È½Ï¶à£¬ÓÐÐÂÒ⣡
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19Â¥2009-02-13 09:04:25
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

qiaoxiaoli

Òø³æ (СÓÐÃûÆø)

¡ï ¡ï ¡ï ¡ï ¡ï
waiy2001(½ð±Ò+5,VIP+0): 2-13 13:43
¡¾Ñ§¿ÆÁìÓò¡¿½ðÊôÓлú
¡¾ÎÄÏ×ÌâÄ¿¡¿The coordination chemistry of guanidines and guanidinates
¡¾ÆÚ¿¯À´Ô´¡¿Coordination Chemistry Reviews
¡¾×÷Õß»ò¿ÎÌâ×é¡¿Philip J. Bailey *, Stuart Pace
¡¾·¢±íʱ¼ä¡¿2001
¡¾ÄÚÈݼò½é¡¿Species containing the Y-shaped CN3 unit have recently attracted increasing attention as electronically and sterically flexible ligands. Neutral guanidines [(R2N)2C=NR], guanidinates(-1) [(RN)2CNR2] and guanidinates(2-) [(RN)2C=NR]2 are capable of exhibiting a variety of coordination modes and a range of donor properties leading to compatibility with a remarkably wide range of metal ions from all parts of the periodic table. The coordination chemistry of these species is reviewed up to July 2000, and aspects of their electronic structures and metal-ligand bonding characteristics discussed.
All rights reserved.
¡¾Ìå»á&ÊÕ»ñ¡¿ÊǹØÓÚëÒ»ù»¯ºÏÎïµÄ×ÛÊö£¬ºÜ²»´í
20Â¥2009-02-13 09:22:50
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