Hubungan antara Sikap Konsumen dan Norma Subjektif dengan Minat Nasabah untuk Bertransaksi Logam Mulia di Pegadaian Syariah (Studi Kasus : Pegadaian Syariah Cabang Kramat Raya, Jakarta )

The purpose of this study was to determine whether the belief factor, the evaluation results, subjective norm and motivation have a correlation consumer interest in “logam mulia” sharia pawnshop transaction. Analytical techniques used in this study is correlation. Samples used in this study as many as 91 respondents. The results of this study showed that consumer interest to conduct transactions in “logam mulia” sharia pawnshop transaction is not related to his conviction, while the evaluation of results, subjective norms, and motivation have a positive relationship with consumer interest in “logam mulia” sharia pawnshop transaction

Hydrothermal Synthesis and Structure of Coordination Polymers by Combination of Bipyrazole and Aromatic Dicarboxylate Ligands

Nine new coordination polymers, namely 2∞[Ag(Hp2CA)(Me4bpz)] (I), 3∞[Zn2(p2CA)2(Me4bpz)] (II), 2∞[Cd(OAc)2(Me4bpz)(H2O)] (III), 1∞[Ag2(m2CA)(Me4bpz)2] (IV), 3∞[Zn(m2CA)(Me4bpz)] (V), 2∞[Cd(m2CA)(Me4bpz)]·H2O (VI), 1∞[Ag(OAc)(Me4bpz)2]·5.4 H2O (VII), 3∞[Zn2(OHm2CA)2(Me4bpz)2]·1.75 H2O (VIII), and 2∞[Cd(OHm2CA)(Me4bpz)(H2O)] (IX) [Hp2CA, terephthalic acid monoanion; p2CA, terephthalic acid dianion; OAc, acetate; m2CA, isophthalic acid dianion; OHm2CA, 5-hydroxy-isophthalic acid dianion; Me4bpz, 3,3′,5,5′-tetramethyl-4,4′-bipyrazole], were obtained from acetate hydrates of Ag+, Zn2+, and Cd2+ and mixed ligand systems consisting of Me4bpz and the respective aromatic dicarboxylic acid by means of hydrothermal synthesis. The compounds were characterized by means of X-ray single-crystal structure analysis, elemental analysis, and IR spectroscopy. The topologies realized in these coordination polymers vary from simple one-dimensional polymers to complex three-dimensional frameworks. Hydrogen bonds of different types with influence on the resulting structures are observed in all compounds

A Mechanistic Dehydration Study with [2-¹³C]-DIMBOA

Dehydration of a 2-13C-labeled synthetic sample of the natural aglucone 2,4-dihydroxy-7-methoxy-2H-1,4-benzoxazin-3(4H)-one ([2-13C]-DIMBOA, 10) using N-ethoxycarbonyltrichloroacetaldimine led to 3-formyl-6-methoxybenzoxazolin-2(3H)-one (13C-labeled FMBOA, 11) with complete transfer of the 13C label into the −CHO group. On the basis of this finding, a mechanism for the dehydration is proposed

Hydrothermal Synthesis and Structure of Coordination Polymers by Combination of Bipyrazole and Aromatic Dicarboxylate Ligands

Nine new coordination polymers, namely 2∞[Ag(Hp2CA)(Me4bpz)] (I), 3∞[Zn2(p2CA)2(Me4bpz)] (II), 2∞[Cd(OAc)2(Me4bpz)(H2O)] (III), 1∞[Ag2(m2CA)(Me4bpz)2] (IV), 3∞[Zn(m2CA)(Me4bpz)] (V), 2∞[Cd(m2CA)(Me4bpz)]·H2O (VI), 1∞[Ag(OAc)(Me4bpz)2]·5.4 H2O (VII), 3∞[Zn2(OHm2CA)2(Me4bpz)2]·1.75 H2O (VIII), and 2∞[Cd(OHm2CA)(Me4bpz)(H2O)] (IX) [Hp2CA, terephthalic acid monoanion; p2CA, terephthalic acid dianion; OAc, acetate; m2CA, isophthalic acid dianion; OHm2CA, 5-hydroxy-isophthalic acid dianion; Me4bpz, 3,3′,5,5′-tetramethyl-4,4′-bipyrazole], were obtained from acetate hydrates of Ag+, Zn2+, and Cd2+ and mixed ligand systems consisting of Me4bpz and the respective aromatic dicarboxylic acid by means of hydrothermal synthesis. The compounds were characterized by means of X-ray single-crystal structure analysis, elemental analysis, and IR spectroscopy. The topologies realized in these coordination polymers vary from simple one-dimensional polymers to complex three-dimensional frameworks. Hydrogen bonds of different types with influence on the resulting structures are observed in all compounds

Formation of Novel P<i>-</i>Functionalized Ligands by Insertion Reactions of RNCX (R = Ph, X = O, S; R = Prⁱ, X = O) into the Zr−P Bond of [Cp°₂ZrCl(PHCy)] (Cp° = η⁵-C₅EtMe₄, Cy = Cyclohexyl) and [Cp‘₂ZrCl{PH(TRIP)}] (Cp‘ = η⁵-C₅MeH₄, TRIP = 2,4,6-Prⁱ₃C₆H₂)

[Cp°2ZrCl(PHCy)] (1; Cp° = η5-C5EtMe4, Cy = cyclohexyl) and [Cp‘2ZrCl{PH(TRIP)}] (2; Cp‘ = η5-C5MeH4,TRIP = 2,4,6-Pri3C6H2) readily insert RNCX (R = Ph, X = S, O; R = Pri, X = O) to give [Cp°2ZrCl{η2-XC(PHCy)NR}] (X = S, R = Ph (3); X = O, R = Ph (4); X = O, R = Pri (5)) and [Cp‘2ZrCl{η2-XC{PH(TRIP)}NR}] (X = S, R = Ph (6); X = O, R = Ph (7); X = O, R = Pri (8)). 3−8 were characterized spectroscopically (IR, NMR, MS), and crystal structure determinations on 4−6 showed an η2 bonding mode (X,N) of the XC(PHR‘)NR (R‘ = Cy, TRIP) ligands. Of the two possible coordination modes of the ligand, 4 and 5 are obtained exclusively as the endo isomer, in which the NR group is adjacent to the Zr−Cl bond, while for 6−8, both isomers (endo and exo) are formed (1:8 (6), 1:30 (7) and 1:5 (8)), whereby the exo isomer is favored. The exo isomer of 6 was structurally characterized

Formation of Novel P<i>-</i>Functionalized Ligands by Insertion Reactions of RNCX (R = Ph, X = O, S; R = Prⁱ, X = O) into the Zr−P Bond of [Cp°₂ZrCl(PHCy)] (Cp° = η⁵-C₅EtMe₄, Cy = Cyclohexyl) and [Cp‘₂ZrCl{PH(TRIP)}] (Cp‘ = η⁵-C₅MeH₄, TRIP = 2,4,6-Prⁱ₃C₆H₂)

[Cp°2ZrCl(PHCy)] (1; Cp° = η5-C5EtMe4, Cy = cyclohexyl) and [Cp‘2ZrCl{PH(TRIP)}] (2; Cp‘ = η5-C5MeH4,TRIP = 2,4,6-Pri3C6H2) readily insert RNCX (R = Ph, X = S, O; R = Pri, X = O) to give [Cp°2ZrCl{η2-XC(PHCy)NR}] (X = S, R = Ph (3); X = O, R = Ph (4); X = O, R = Pri (5)) and [Cp‘2ZrCl{η2-XC{PH(TRIP)}NR}] (X = S, R = Ph (6); X = O, R = Ph (7); X = O, R = Pri (8)). 3−8 were characterized spectroscopically (IR, NMR, MS), and crystal structure determinations on 4−6 showed an η2 bonding mode (X,N) of the XC(PHR‘)NR (R‘ = Cy, TRIP) ligands. Of the two possible coordination modes of the ligand, 4 and 5 are obtained exclusively as the endo isomer, in which the NR group is adjacent to the Zr−Cl bond, while for 6−8, both isomers (endo and exo) are formed (1:8 (6), 1:30 (7) and 1:5 (8)), whereby the exo isomer is favored. The exo isomer of 6 was structurally characterized

Insertion of Acetonitrile into the Zr−P Bond of [Cp°₂ZrCl(PHCy)] (Cy = Cyclohexyl, Cp° = η⁵-C₅EtMe₄) Followed by PHCy Elimination To Give [Cp°₂(Cl)Zr(μ-NCMe−CMeN)Zr(Cl)Cp°₂]^†

[Cp°2ZrCl(PHCy)] (Cy = cyclohexyl, Cp° = η5-C5EtMe4) undergoes insertion of MeCN into the Zr−P bond, yielding [Cp°2ZrCl{NC(Me)(PHCy)}] (1). Isomers with a Z (1a) or E (1b) configuration at the C−N double bond are obtained in a ratio of 13:1. At room temperature, 1 slowly decomposes in solution with elimination of a PHCy fragment and formation of [Cp°2(Cl)Zr(μ-NCMe−CMeN)Zr(Cl)Cp°2] (2). Two isomers are obtained with a trans (2a) or cis (2b) arrangement around the C−N double bonds of the bridging butane-2,3-diimino(2-)-N,N‘ ligand. 1a, 2a, and 2b were isolated and characterized by IR, MS, and NMR spectroscopy (1H, 31P, 13C), and crystal structure determinations were carried out on 1a and 2a. In the solid state, the short Zr−N bonds and the almost linear Zr−N−C angles of 1a and 2a indicate the presence of Zr−N double bonds

Insertion of Acetonitrile into the Zr−P Bond of [Cp°₂ZrCl(PHCy)] (Cy = Cyclohexyl, Cp° = η⁵-C₅EtMe₄) Followed by PHCy Elimination To Give [Cp°₂(Cl)Zr(μ-NCMe−CMeN)Zr(Cl)Cp°₂]^†

[Cp°2ZrCl(PHCy)] (Cy = cyclohexyl, Cp° = η5-C5EtMe4) undergoes insertion of MeCN into the Zr−P bond, yielding [Cp°2ZrCl{NC(Me)(PHCy)}] (1). Isomers with a Z (1a) or E (1b) configuration at the C−N double bond are obtained in a ratio of 13:1. At room temperature, 1 slowly decomposes in solution with elimination of a PHCy fragment and formation of [Cp°2(Cl)Zr(μ-NCMe−CMeN)Zr(Cl)Cp°2] (2). Two isomers are obtained with a trans (2a) or cis (2b) arrangement around the C−N double bonds of the bridging butane-2,3-diimino(2-)-N,N‘ ligand. 1a, 2a, and 2b were isolated and characterized by IR, MS, and NMR spectroscopy (1H, 31P, 13C), and crystal structure determinations were carried out on 1a and 2a. In the solid state, the short Zr−N bonds and the almost linear Zr−N−C angles of 1a and 2a indicate the presence of Zr−N double bonds

Hünlich Base: (Re)Discovery, Synthesis, and Structure Elucidation after a Century

After almost 100 years, the structure of the product of the reaction between 2,4-diaminotoluene and formaldehyde was elucidated: derivative <b>3</b>, which we call the Hünlich base, was synthesized on a multigram scale and its enantiomers were easily separated in preparative amounts. Furthermore, transformation of the NH₂ groups to the corresponding bis-iodides and bis-azides is presented. The latter was also used for desymmetrization by click chemistry

Hünlich Base: (Re)Discovery, Synthesis, and Structure Elucidation after a Century

After almost 100 years, the structure of the product of the reaction between 2,4-diaminotoluene and formaldehyde was elucidated: derivative <b>3</b>, which we call the Hünlich base, was synthesized on a multigram scale and its enantiomers were easily separated in preparative amounts. Furthermore, transformation of the NH₂ groups to the corresponding bis-iodides and bis-azides is presented. The latter was also used for desymmetrization by click chemistry