Kristallstrukturen, spektroskopische Charakterisierung und Normalkoordinatenanalyse von (n-Bu4N)2[M(ECN)4] (M = Pd, Pt; E = S, Se)

Rohde, Jan-Uwe; Malottki, B. von; Preetz, W.

doi:10.1002/(sici)1521-3749(200004)626:4<905::aid-zaac905>3.0.co;2-z

Cited by 20 publications

(22 citation statements)

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“…The platinum azide stretching modes of the three complex salts are in the range of 401±421 cm ±1 . Øhnliche Probleme sind fu È r Bromorhodanoiridate(III) [13] und Verbindungen des Typs (n-Bu 4 N) 2 [M(ECN) 4 ]; M = Pd, Pt; E = S, Se [14] diskutiert worden. (PtN a N b ) tragen erheblich zum Kraftfeld bei.…”

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Darstellung, Kristallstrukturen und Schwingungsspektren von trans-[Pt(N3)4X2]2, X = Cl, Br, I

Schröder

Preetz

2000

Z. anorg. allg. Chem.

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Inhaltsu È bersicht. Durch oxidative Addition an (n-Bu 4 N) 2 -[Pt(N 3 ) 4 ] mit den elementaren Halogenen in Dichlormethan entstehen trans-(n-Bu 4 N) 2 [Pt(N 3 ) 4 X 2 ], X = Cl, Br, I. Ro È ntgenstrukturanalysen an Einkristallen von trans-(Ph 4 P) 2 [Pt(N 3 ) 4 Cl 2 ] (triklin, Raumgruppe P1, a = 10,352(1), b = 10,438(2), c = 11,890(2) A Ê , a = 91,808(12), b = 100,676(12), c = 113,980(10)°, Z = 1), trans-(Ph 4 P) 2 [Pt(N 3 ) 4 Br 2 ] (triklin, Raumgruppe P1, a = 10,336(1), b = 10,536(1), c = 12,119(2) A Ê , a = 91,762(12), b = 101,135(12), c = 112,867(10)°, Z = 1) und trans-(Ph 4 P) 2 [Pt(N 3 ) 4 I 2 ] (triklin, Raumgruppe P1, a = 10,186(2), b = 10,506(2), c = 12,219(2) A Ê , a = 91,847(16)°, b = 101,385(14), c = 111,965(18), Z = 1) zeigen, daû die Verbindungen isotyp kristallisieren und die oktaedrischen Komplexanionen inversionssymmetrisch sind. Die Bindungsla Èngen betragen Pt±Cl = 2,324, Pt±Br = 2,472, Pt±I = 2,619 und Pt±N = 2,052±2,122 A Ê . Die Azidoliganden sind unter Pt±N a ±N b -Winkeln von 116,2±121,9°gebunden und mit N a ±N b ±N c -Winkeln von 172,1±176,8°nahezu linear. In den Schwingungsspektren beobachtet man die Platin-Halogen-Valenzschwingungen von trans-(n-Bu 4 N) 2 [Pt(N 3 ) 4 X 2 ] im Bereich von 327±337 (X = Cl), bei 202 (Br) und bei 145±165 cm ±1 (I), die Platin-Azid-Valenzschwingungen der drei Komplexsalze liegen bei 401±421 cm ±1 . Unter Verwendung der ro È ntgenographisch ermittelten Moleku È lparameter lassen sich die Schwingungsspektren durch Normalkoordinatenanalyse zuordnen. Die Valenzkraftkonstanten betragen f d (PtCl) = 1,90, f d (PtBr) = 1,64, f d (PtI) = 1,22, f d (PtN a ) = 2,20±2,27 und f d (N a N b , N b N c ) = 12,44 mdyn/A Ê .

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Darstellung, Kristallstrukturen und Schwingungsspektren von trans-[Pt(N3)4X2]2, X = Cl, Br, I

Schröder

Preetz

2000

Z. anorg. allg. Chem.

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“…All compounds were prepared using published procedures and recrystallized several times before spectroscopic measurements. 4,5,9 The compounds were analyzed by luminescence, Raman and infrared spectroscopy.…”

Section: Experimental Section and Spectroscopic Resultsmentioning

confidence: 99%

“…Fig 9. Calculated luminescence spectra from the model in Fig.3and the corresponding one-dimensional model in Fig.8using values of 5 cm -1 (green trace), 30 cm -1 (red trace) and 60 cm -1 (yellow dotted trace).…”

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confidence: 99%

Vibronic structure in the luminescence spectra of tetragonal d2 and d8 complexes analyzed by wavepacket dynamics on two-dimensional potential surfaces

Triest¹,

Masson²,

Grey³

et al. 2000

PhysChemComm

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The luminescence spectra of the tetragonal trans-ReO 2 (vinylimidazole) 4+ complex and the square planar Pd(SCN) 4 2and Pt(SCN) 42complexes all show vibronic progressions in two predominant vibrational modes. In the first complex, the vibronic progressions involve high-frequency and low-frequency metal-ligand modes. In the square planar complexes, the two vibrational modes have similar frequencies. At the intermediate resolution, often observed experimentally, these compounds provide an example of the missing mode (or MIME) effect. Wavepacket dynamics on two-dimensional surfaces explain in a visual and intuitively appealing way the spectroscopic features. The distinct effects are caused by the different frequency ratios between the two modes of the two-dimensional models describing each complex. The emitting state structure determined from the spectra reveals similar changes along a bending normal coordinate for Pd(SCN) 4 2and Pt(SCN) 4 2-.

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“…For related acridinium compounds, see: Hafiz (2006); Veldhuizen et al (1997). For the crystal structures of [M(NCS) 4 ] 2À [M = Pt(II), Pd(II)] complexes, see: Aoki et al (1999); Deplano et al (2004); Rohde et al (2000).…”

Section: Related Literaturementioning

confidence: 99%

Diacridinium tetrakis(thiocyanato-κS)platinate(II)

Ha¹

2010

Acta Cryst E

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The asymmetric unit of the title compound, (C13H10N)2[Pt(NCS)4], contains a protonated acridine molecule and one half of a [Pt(NCS)4]2− anion. In the complex anion, the PtII ion is located on an inversion centre and is four-coordinated in a slightly distorted square-planar environment by four S atoms from four thiocyanate ligands. The compound displays numerous intermolecular π–π interactions between six-membered rings, with a shortest centroid–centroid distance of 3.682 (3) Å. The component ions interact by means of intermolecular N—H⋯N hydrogen bonds.

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Kristallstrukturen, spektroskopische Charakterisierung und Normalkoordinatenanalyse von (n-Bu4N)2[M(ECN)4] (M = Pd, Pt; E = S, Se)

Cited by 20 publications

References 4 publications

Darstellung, Kristallstrukturen und Schwingungsspektren von trans-[Pt(N3)4X2]2, X = Cl, Br, I

Darstellung, Kristallstrukturen und Schwingungsspektren von trans-[Pt(N3)4X2]2, X = Cl, Br, I

Vibronic structure in the luminescence spectra of tetragonal d2 and d8 complexes analyzed by wavepacket dynamics on two-dimensional potential surfaces

Diacridinium tetrakis(thiocyanato-κS)platinate(II)

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